{"id":6498,"date":"2026-02-04T11:26:44","date_gmt":"2026-02-04T11:26:44","guid":{"rendered":"https:\/\/www.millboard.com\/en-gb\/?page_id=6019"},"modified":"2026-03-13T10:40:13","modified_gmt":"2026-03-13T10:40:13","slug":"siding-accessories","status":"publish","type":"page","link":"https:\/\/www.millboard.com\/en-us\/composite-siding-collections\/siding-accessories\/","title":{"rendered":"Siding Accessories"},"content":{"rendered":"<header class=\"page-header wp-block alignfull has-brand-1-background-color has-background page-header--type--page has-breadcrumbs\">\n    <div class=\"page-header__inner\">\n                    <!-- Breadcrumbs -->\n            <div class=\"page-header__breadcrumbs\">\n                <nav class=\"breadcrumbs\">\n    <span class=\"breadcrumbs__yoast-wrapper\"><span><a href=\"https:\/\/www.millboard.com\/en-us\/\">Home<\/a><\/span><\/span><\/nav>\n            <\/div>\n        \n        <div class=\"page-header__wrapper\">\n            <div class=\"page-header__image-wrapper\">\n                                    <div class=\"page-header__image\">\n                        <div class=\"page-header__image-inner img-fit\">\n                            <img decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-3-768x512.jpg\" class=\"\" alt=\"\" fetchpriority=\"high\" data-spai-eager=\"1\" role=\"presentation\" loading=\"eager\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-3-768x512.jpg 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-3-300x200.jpg 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-3-1024x682.jpg 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-3-600x400.jpg 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-3.jpg 2000w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                        <\/div>\n                    <\/div>\n                            <\/div>\n\n            <div class=\"page-header__content page-header__content--first\">\n                <div class=\"page-header__header\">\n                    \n                                            <h1 class=\"page-header__heading is-style-typestyle-h1\">Siding Accessories<\/h1>\n                                    <\/div>\n\n                            <\/div>\n                <div class=\"page-header__content page-header__content--last\">\n                                                <div class=\"page-header__description\">\n                        <p>Attention to detail can make all the difference in the success of your siding project. That&#8217;s why we offer a range of premium siding accessories designed to enhance the aesthetics, durability, and functionality of your installation. All external siding accessories, including colour-coded stainless steel screws are designed for complete visual continuity.<\/p>\n                    <\/div>\n                \n                \n                            <\/div>\n        <\/div>\n    <\/div>\n\n    <\/header>\n\n    <div class=\"woocommerce-notices-wrapper\"><\/div>\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"after\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Shadow Line+                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"external-corner-profile\" class=\"media-object__heading\">External Corner Profile<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Used with the Shadow Line+ boards (also used for D\u00e9cor siding installations) to finish off the external corner of a building, fixed along with the perforated closure and using 0.79&#8243; fixings. Available in eleven wood-effect colour options, including Anthracite, Smoked Oak and Burnt Cedar.<\/p>\n<p>Construction: Flexible polymer resin<br \/>\nSize: ~2\u2033 \u00d7 2\u2033 \u00d7 10\u2032 0\u2033<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-cladding\/shadow-line-external-corner-profile-anthracite\/\" class=\"g-button--primary g-button\"><span >External&nbsp;Corner Profiles<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n                    <div class=\"media-object__media media-object__media--image  img-fit\">\n                                    <img decoding=\"async\" width=\"768\" height=\"768\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFE50R_Shadow_Line-Plus_External_Corner_Profile_Burnt_Cedar_Corner-Display-768x768.webp\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFE50R_Shadow_Line-Plus_External_Corner_Profile_Burnt_Cedar_Corner-Display-768x768.webp 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFE50R_Shadow_Line-Plus_External_Corner_Profile_Burnt_Cedar_Corner-Display-300x300.webp 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFE50R_Shadow_Line-Plus_External_Corner_Profile_Burnt_Cedar_Corner-Display-1024x1024.webp 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFE50R_Shadow_Line-Plus_External_Corner_Profile_Burnt_Cedar_Corner-Display-150x150.webp 150w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFE50R_Shadow_Line-Plus_External_Corner_Profile_Burnt_Cedar_Corner-Display-1575x1575.webp 1575w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFE50R_Shadow_Line-Plus_External_Corner_Profile_Burnt_Cedar_Corner-Display-600x600.webp 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFE50R_Shadow_Line-Plus_External_Corner_Profile_Burnt_Cedar_Corner-Display-100x100.webp 100w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFE50R_Shadow_Line-Plus_External_Corner_Profile_Burnt_Cedar_Corner-Display.webp 2048w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>                            <\/div>\n            <\/div>\n\n<\/div>\n\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull has-background has-brand-1-background-color\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"before\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n                <div class=\"media-object__media img-fit \">\n\n                                    \n                    <img decoding=\"async\" width=\"768\" height=\"768\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFH38R_Shadow_Line-Plus_Internal_Corner_Profile_Burnt_Cedar_Corner-Display-768x768.webp\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFH38R_Shadow_Line-Plus_Internal_Corner_Profile_Burnt_Cedar_Corner-Display-768x768.webp 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFH38R_Shadow_Line-Plus_Internal_Corner_Profile_Burnt_Cedar_Corner-Display-300x300.webp 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFH38R_Shadow_Line-Plus_Internal_Corner_Profile_Burnt_Cedar_Corner-Display-1024x1024.webp 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFH38R_Shadow_Line-Plus_Internal_Corner_Profile_Burnt_Cedar_Corner-Display-150x150.webp 150w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFH38R_Shadow_Line-Plus_Internal_Corner_Profile_Burnt_Cedar_Corner-Display-1575x1575.webp 1575w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFH38R_Shadow_Line-Plus_Internal_Corner_Profile_Burnt_Cedar_Corner-Display-600x600.webp 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFH38R_Shadow_Line-Plus_Internal_Corner_Profile_Burnt_Cedar_Corner-Display-100x100.webp 100w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCFH38R_Shadow_Line-Plus_Internal_Corner_Profile_Burnt_Cedar_Corner-Display.webp 2048w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>\n                                                <\/div>\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Shadow Line+                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"internal-corner-profile\" class=\"media-object__heading\">Internal Corner Profile<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Used with the Shadow Line+ boards to finish off the Internal corner of a building, fixed with the perforated closure and 0.79&#8243; fixings. Available in eleven wood-effect colour options, including Ashwood, Golden Oak and Anthracite.<\/p>\n<p>Construction: Flexible polymer resin<br \/>\nSize: 1\u00bd\u2033 \u00d7 1\u00bd\u2033 \u00d7 10\u2032 0\u2033<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-cladding\/shadow-line-internal-corner-profile-limed-oak\/\" class=\"g-button--primary g-button\"><span >Internal Corner Profiles<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n            <\/div>\n\n<\/div>\n\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"after\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Corner Trim                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"envello-square-corner-trim\" class=\"media-object__heading\">Envello Square Corner Trim<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Used with the Board &amp; Batten+ boards to finish off the external and internal corners of a building and around openings, fixed with the perforated closure and 0.79\u2033 fixings.<\/p>\n<p>Construction: Flexible polymer resin<br \/>\nSize: 2\u2033 \u00d7 2\u2033 \u00d7 10\u2032<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-cladding\/square-corner-trim-golden-oak\/\" class=\"g-button--primary g-button\"><span >Square Corner Trim<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n                    <div class=\"media-object__media media-object__media--image  img-fit\">\n                                    <img decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCPTF50C-Square-Corner-Trim_Coppered-Oak-768x576.jpg\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCPTF50C-Square-Corner-Trim_Coppered-Oak-768x576.jpg 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCPTF50C-Square-Corner-Trim_Coppered-Oak-300x225.jpg 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCPTF50C-Square-Corner-Trim_Coppered-Oak-1024x768.jpg 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCPTF50C-Square-Corner-Trim_Coppered-Oak-600x450.jpg 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCPTF50C-Square-Corner-Trim_Coppered-Oak.jpg 2000w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>                            <\/div>\n            <\/div>\n\n<\/div>\n\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull has-background has-brand-1-background-color\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"before\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n                <div class=\"media-object__media img-fit \">\n\n                                    \n                    <img decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-1-768x512.jpg\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-1-768x512.jpg 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-1-300x200.jpg 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-1-1024x682.jpg 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-1-600x400.jpg 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/MCR146D_Reveal_Board_Smoked_Oak_Cameo_Window-Reveal-1.jpg 2000w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>\n                                                <\/div>\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Reveal Boards                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"envello-reveal-boards\" class=\"media-object__heading\">Envello Reveal Boards<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Envello Reveal Boards are should be used as the finishing edge around windows\/doors with the Shadow Line+ and Board &amp; Batten+ boards. Fixed with the Envello Coloured Head Screws.<\/p>\n<p>Construction: Polymer Resin Core \/ Elastomer surface layer<br \/>\nSize: 5\u00be\u2033 \u00d7 11\u2032 9\u00be\u2033 \u00d7 \u215d\u2033<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-cladding\/reveal-board-golden-oak\/\" class=\"g-button--primary g-button\"><span >Explore Reveal Board<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n            <\/div>\n\n<\/div>\n\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"after\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Aluminium Trims                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"vertical-starter-trim\" class=\"media-object__heading\">Vertical Starter Trim<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Trim used to start the siding at the bottom, when the cladding is fixed vertically. Fixed with the 0.79\u2033 fixings.<\/p>\n<p>Construction: Aluminium<br \/>\nSize: ~1\u2033 \u00d7 \u00bd\u2033 \u00d7 8\u2032 2\u215c\u2033<br \/>\nProduct code: GT250L<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-siding\/vertical-starter-trim\/\" class=\"g-button--primary g-button\"><span >Vertical Starter Trim<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n                    <div class=\"media-object__media media-object__media--image  img-fit\">\n                                    <img decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250L_Vertical_Starter_Trim-768x576.jpg\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250L_Vertical_Starter_Trim-768x576.jpg 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250L_Vertical_Starter_Trim-300x225.jpg 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250L_Vertical_Starter_Trim-1024x768.jpg 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250L_Vertical_Starter_Trim-600x450.jpg 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250L_Vertical_Starter_Trim.jpg 2000w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>                            <\/div>\n            <\/div>\n\n<\/div>\n\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull has-background has-brand-1-background-color\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"before\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n                <div class=\"media-object__media img-fit \">\n\n                                    \n                    <img decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250J_Horizontal_Starter_Trim_J_Profile-768x576.jpg\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250J_Horizontal_Starter_Trim_J_Profile-768x576.jpg 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250J_Horizontal_Starter_Trim_J_Profile-300x225.jpg 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250J_Horizontal_Starter_Trim_J_Profile-1024x768.jpg 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250J_Horizontal_Starter_Trim_J_Profile-600x450.jpg 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GT250J_Horizontal_Starter_Trim_J_Profile.jpg 2000w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>\n                                                <\/div>\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Aluminium Trims                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"horizontal-starter-trim\" class=\"media-object__heading\">Horizontal Starter Trim<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Trim used to start the siding at the bottom, when the cladding is fitted horizontally. Fixed with the 0.79\u2033 fixings.<\/p>\n<p>Construction: Aluminium<br \/>\nSize: ~1\u2033 \u00d7 \u215c\u2033 \u00d7 8\u2032 2\u215c\u2033<br \/>\nProduct code: GT250J<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-siding\/horizontal-starter-trim-j-profile\/\" class=\"g-button--primary g-button\"><span >Horizontal Starter Trim J Profile<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n            <\/div>\n\n<\/div>\n\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"after\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Aluminium Trims                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"perforated-closure-trim\" class=\"media-object__heading\">Perforated Closure Trim<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Used to prevent insects and rodents getting into the ventilated cavity behind the boards, whilst allowing airflow. Fixed at the bottom of the siding with the starter trim, also at the top on its own, as well as with the corner profiles. Fixed with the 0.79\u2033 fixings.<\/p>\n<p>Construction: Aluminium<br \/>\nSize: ~1\u2033 \u00d7 2\u2033 \u00d7 9\u2032 10\u215b\u2033<br \/>\nProduct Code: GP300L<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-siding\/perforated-closure-trim\/\" class=\"g-button--primary g-button\"><span >Perforated Closure Trim<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n                    <div class=\"media-object__media media-object__media--image  img-fit\">\n                                    <img decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GP300L_Perforated_Closure_Trim-768x576.jpg\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GP300L_Perforated_Closure_Trim-768x576.jpg 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GP300L_Perforated_Closure_Trim-300x225.jpg 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GP300L_Perforated_Closure_Trim-1024x768.jpg 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GP300L_Perforated_Closure_Trim-600x450.jpg 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/GP300L_Perforated_Closure_Trim.jpg 2000w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>                            <\/div>\n            <\/div>\n\n<\/div>\n\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull has-background has-brand-1-background-color\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"before\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n                <div class=\"media-object__media img-fit \">\n\n                                    \n                    <img decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC30P250_Cladding_Board_Fixing-768x576.jpg\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC30P250_Cladding_Board_Fixing-768x576.jpg 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC30P250_Cladding_Board_Fixing-300x225.jpg 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC30P250_Cladding_Board_Fixing-1024x769.jpg 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC30P250_Cladding_Board_Fixing-600x450.jpg 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC30P250_Cladding_Board_Fixing.jpg 2000w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>\n                                                <\/div>\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Fixings &amp; Screws                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"siding-board-fixings\" class=\"media-object__heading\">Siding Board Fixings<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Used to fix siding boards onto battens through the tongue on the board.<\/p>\n<p>Construction: A2 Stainless Steel<br \/>\nSize: 9\/64\u2033 \u00d7 1-3\/16\u2033<br \/>\nProduct code: FC30P250<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-siding\/envello-board-fixing\/\" class=\"g-button--primary g-button\"><span >Envello Board Fixing<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n            <\/div>\n\n<\/div>\n\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"after\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Fixings &amp; Screws                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"siding-accessories-fixings\" class=\"media-object__heading\">Siding Accessories Fixings<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Used to fix the corner profiles, starter trims and perforated closures.<\/p>\n<p>Construction: A2 Stainless Steel<br \/>\nSize: 9\/64\u2033 \u00d7 \u00be\u2033\u201313\/16\u2033<br \/>\nProduct code: FC20P250<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-siding\/envello-accessory-fixing\/\" class=\"g-button--primary g-button\"><span >Envello Accessory Fixing<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n                    <div class=\"media-object__media media-object__media--image  img-fit\">\n                                    <img decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC20P250_Cladding_Accessories_Fixing-768x576.jpg\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC20P250_Cladding_Accessories_Fixing-768x576.jpg 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC20P250_Cladding_Accessories_Fixing-300x225.jpg 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC20P250_Cladding_Accessories_Fixing-1024x769.jpg 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC20P250_Cladding_Accessories_Fixing-600x450.jpg 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC20P250_Cladding_Accessories_Fixing.jpg 2000w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>                            <\/div>\n            <\/div>\n\n<\/div>\n\n\n<div data-link=\"false\" class=\"media-object media-content wp-block alignfull has-background has-brand-1-background-color\" data-media=\"image\" data-media-type=\"image\" data-media-position=\"before\" data-orientation=\"horizontal\">\n    <div class=\"media-object__inner\">\n                <div class=\"media-object__media img-fit \">\n\n                                    \n                    <img decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC40P100_Envello_Shadow_Line_Plus_Coloured_Head_Screws-With-Jarrah-Salt-Blue-and-Sage-Green-768x576.jpg\" class=\"\" alt=\"\" role=\"presentation\" loading=\"lazy\" srcset=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC40P100_Envello_Shadow_Line_Plus_Coloured_Head_Screws-With-Jarrah-Salt-Blue-and-Sage-Green-768x576.jpg 768w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC40P100_Envello_Shadow_Line_Plus_Coloured_Head_Screws-With-Jarrah-Salt-Blue-and-Sage-Green-300x225.jpg 300w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC40P100_Envello_Shadow_Line_Plus_Coloured_Head_Screws-With-Jarrah-Salt-Blue-and-Sage-Green-1024x769.jpg 1024w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC40P100_Envello_Shadow_Line_Plus_Coloured_Head_Screws-With-Jarrah-Salt-Blue-and-Sage-Green-600x450.jpg 600w, https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/FC40P100_Envello_Shadow_Line_Plus_Coloured_Head_Screws-With-Jarrah-Salt-Blue-and-Sage-Green.jpg 2000w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/>\n                                                <\/div>\n        \n        <div class=\"media-object__content flex-column\">\n                            <div class=\"media-object__meta-prefix\">\n                    Fixings &amp; Screws                <\/div>\n            \n            \n                            <div class=\"media-object__header flex-column\">\n                                            <h2 id=\"envello-coloured-head-screws\" class=\"media-object__heading\">Envello Coloured Head Screws<\/h2>\n                    \n                                             <div class=\"media-object__subheading\">\n                            <p>Specifically designed to be used through the face of the Shadow Line+ and Board &amp; Batten+ siding boards when it isn&#8217;t possible to fix through the tongue of the board. Colour-matched to all of the colours in the Envello range.<\/p>\n<p>Construction: A2 Stainless Steel<br \/>\nSize: 9\/64\u2033 \u00d7 1 9\/16\u2033<\/p>\n                        <\/div>\n                     \n                                    <\/div>\n            \n            \n            \n                            <ul class=\"list list-reset--hard flex-column flex-column--mq-medium--row media-object__list media-object__buttons\">\n            <li class=\"list__item media-object__list__item\">\n            <a href=\"https:\/\/www.millboard.com\/en-us\/shop\/composite-cladding\/cladding-accessories\/envello-coloured-head-screws-cladding-accessories\/coloured-head-screws-burnt-cedar\/\" class=\"g-button--primary g-button\"><span >Coloured Head screws<\/span><\/a>\n        <\/li>\n    <\/ul>\n                    <\/div>\n\n            <\/div>\n\n<\/div>\n\n\n<section data-allow-multiple=\"false\" class=\"accordion wp-block alignfull\">\n    <div class=\"accordion__inner\">\n\n        <div class=\"accordion__header\">\n\n            \n                            <h3 class=\"accordion__header__heading\">Frequently Asked Questions<\/h3>\n            \n            \n            \n        <\/div>\n\n        <div class=\"accordion__items\">\n<div class=\"accordion__item wp-block\">\n    <button aria-expanded=\"true\" aria-controls=\"accordion-panel-1\" type=\"button\" class=\"accordion__item__trigger js-accordion-button\" id=\"do-i-need-specialist-tools-to-install-siding-accessories\"><h3 class=\"accordion__item__heading\">Do I need specialist tools to install siding accessories?<\/h3><\/button>\n\n    <div id=\"accordion-panel-1\" class=\"accordion__item__panel js-expandable-element\" aria-labelledby=\"do-i-need-specialist-tools-to-install-siding-accessories\">\n        <div class=\"accordion__item__panel__inner\">\n            <p>Standard carpentry tools are suitable for cutting Millboard, but an aluminum cutting blade will be needed for cutting the metal trims. Standard tools such as a power drill will be sufficient for installing siding accessories.<\/p>\n\n                    <\/div>\n    <\/div>\n<\/div>\n\n\n<div class=\"accordion__item wp-block\">\n    <button aria-expanded=\"false\" aria-controls=\"accordion-panel-2\" type=\"button\" class=\"accordion__item__trigger js-accordion-button\" id=\"what-is-the-difference-between-internal-and-external-siding-trims\"><h3 class=\"accordion__item__heading\">What is the difference between internal and external siding trims?<\/h3><\/button>\n\n    <div id=\"accordion-panel-2\" class=\"accordion__item__panel js-expandable-element\" aria-labelledby=\"what-is-the-difference-between-internal-and-external-siding-trims\" hidden=\"true\" aria-hidden=\"true\">\n        <div class=\"accordion__item__panel__inner\">\n            <p>External Trims are used for external corners, whereas Internal Trims can be used for internal corners. These trims are designed for corners at 90\u00b0, corners at anything other than 90\u00b0 can be done through mitring boards. More information can be found in our installation guide.<\/p>\n\n                    <\/div>\n    <\/div>\n<\/div>\n\n<\/div>\n    <\/div>\n<\/section>\n\n\n<div class=\"navigation-tiles wp-block alignfull has-background has-brand-5-background-color\">\n    <div class=\"navigation-tiles__inner\">\n                    <div class=\"navigation-tiles__header\">\n                                    <div class=\"navigation-tiles__preheading is-style-typestyle-h6\">\n                        Plan your space                    <\/div>\n                                \n                                    <h2 id=\"simple-tools-and-expert-support\" class=\"navigation-tiles__heading\">\n                        Simple tools and expert support.                      <\/h2>\n                            <\/div>\n        \n                    <div class=\"navigation-tiles__tiles\">\n                                    <div class=\"navigation-tiles__tile\">\n                                                    <h3 class=\"navigation-tiles__tile-title\">\n                                Decking configurator                            <\/h3>\n                                                \n                                                    <div class=\"navigation-tiles__tile-description\">\n                                <p>Estimate the boards, fixings, subframe and more you need for your space.<\/p>\n                            <\/div>\n                                                \n                                                    <a target=\"\" rel=\"\" href=\"https:\/\/deckplanner.www.millboard.com\/\" class=\"navigation-tiles__tile-cta g-button\">Open Configurator<\/a>\n                                            <\/div>\n                                    <div class=\"navigation-tiles__tile\">\n                                                    <h3 class=\"navigation-tiles__tile-title\">\n                                Request A Quote                            <\/h3>\n                                                \n                                                    <div class=\"navigation-tiles__tile-description\">\n                                <p>Get accurate pricing and product recommendations for your project.<\/p>\n                            <\/div>\n                                                \n                                                    <a target=\"\" rel=\"\" href=\"https:\/\/www.millboard.com\/en-us\/contact-us\/\" class=\"navigation-tiles__tile-cta g-button\">Contact Us<\/a>\n                                            <\/div>\n                                    <div class=\"navigation-tiles__tile\">\n                                                    <h3 class=\"navigation-tiles__tile-title\">\n                                Installation guides                            <\/h3>\n                                                \n                                                    <div class=\"navigation-tiles__tile-description\">\n                                <p>Step by step fixing advice and detailing for every collection.<\/p>\n                            <\/div>\n                                                \n                                                    <a target=\"\" rel=\"\" href=\"https:\/\/www.millboard.com\/en-us\/product-brochures\/\" class=\"navigation-tiles__tile-cta g-button\">Browse guides<\/a>\n                                            <\/div>\n                                    <div class=\"navigation-tiles__tile\">\n                                                    <h3 class=\"navigation-tiles__tile-title\">\n                                Free product samples                            <\/h3>\n                                                \n                                                    <div class=\"navigation-tiles__tile-description\">\n                                <p>Order some samples to see how Millboard works for your project.<\/p>\n                            <\/div>\n                                                \n                                                    <a target=\"\" rel=\"\" href=\"https:\/\/www.www.millboard.com\/en-us\/product-category\/siding-samples\/\" class=\"navigation-tiles__tile-cta g-button\">Order Samples Today<\/a>\n                                            <\/div>\n                            <\/div>\n            <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":10,"featured_media":0,"parent":777,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"class_list":["post-6498","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Composite Siding Accessories &amp; Installation Trim | Millboard<\/title>\n<meta name=\"description\" content=\"Millboard composite siding accessories include trim, corner profiles and fixings for a clean, professional exterior installation finish.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.millboard.com\/en-us\/composite-siding-collections\/siding-accessories\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Siding Accessories\" \/>\n<meta property=\"og:description\" content=\"Millboard composite siding accessories include trim, corner profiles and fixings for a clean, professional exterior installation finish.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.millboard.com\/en-us\/composite-siding-collections\/siding-accessories\/\" \/>\n<meta property=\"og:site_name\" content=\"EN-US - Residential\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-13T10:40:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.millboard.com\/en-us\/wp-content\/uploads\/sites\/5\/2026\/02\/SL-Ebony-Grey-Shoot.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1263\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/composite-siding-collections\\\/siding-accessories\\\/\",\"url\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/composite-siding-collections\\\/siding-accessories\\\/\",\"name\":\"Composite Siding Accessories & Installation Trim | Millboard\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/#website\"},\"datePublished\":\"2026-02-04T11:26:44+00:00\",\"dateModified\":\"2026-03-13T10:40:13+00:00\",\"description\":\"Millboard composite siding accessories include trim, corner profiles and fixings for a clean, professional exterior installation finish.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/composite-siding-collections\\\/siding-accessories\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/composite-siding-collections\\\/siding-accessories\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/composite-siding-collections\\\/siding-accessories\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Composite Siding Collections\",\"item\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/composite-siding-collections\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Siding Accessories\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/#website\",\"url\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/\",\"name\":\"Millboard\",\"description\":\"Live. Life. 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