{"id":560,"date":"2026-01-05T12:27:07","date_gmt":"2026-01-05T12:27:07","guid":{"rendered":"https:\/\/www.millboard.com\/en-gb\/?page_id=560"},"modified":"2026-04-10T13:36:56","modified_gmt":"2026-04-10T12:36:56","slug":"subframe-frequently-asked-questions","status":"publish","type":"page","link":"https:\/\/www.millboard.com\/en-us\/frequently-asked-questions\/subframe-frequently-asked-questions\/","title":{"rendered":"Subframe FAQS"},"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 page-header__image-wrapper--no-image\">\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\">Subframe FAQS<\/h1>\n                                    <\/div>\n\n                            <\/div>\n                <div class=\"page-header__content page-header__content--last\">\n                                                <div class=\"page-header__description\">\n                        <p>A collection of frequently asked questions about our Millboard subframes.<\/p>\n                    <\/div>\n                \n                \n                            <\/div>\n        <\/div>\n    <\/div>\n\n    <\/header>\n\n    <div class=\"woocommerce-notices-wrapper\"><\/div>\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            \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=\"what-subframe-base-system-should-be-used-with-millboard\"><h3 class=\"accordion__item__heading\">What subframe base system should be used with Millboard?<\/h3><\/button>\n\n    <div id=\"accordion-panel-1\" class=\"accordion__item__panel js-expandable-element\" aria-labelledby=\"what-subframe-base-system-should-be-used-with-millboard\">\n        <div class=\"accordion__item__panel__inner\">\n            <p>The ideal companion to our all-weather composite decking is our DuoSpan subframe system.<\/p>\n<p>DuoSpan combines the strength of aluminium with the design flexibility of recycled plastic. This combination enables distinctive design opportunities for decking and outdoor structures that would be impossible with most conventional subframes. Boasting impressive durability and exceptional ease of installation, DuoSpan provides the perfect subframe for Millboard decking, as well as a universal support system for other outdoor flooring. Its ingenious design includes multiple features that make it near-impossible to get assembly wrong.<\/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-wood-joists-and-duospan-or-plas-pro-joists\"><h3 class=\"accordion__item__heading\">What is the difference between wood Joists and DuoSpan or Plas-Pro Joists?<\/h3><\/button>\n\n    <div id=\"accordion-panel-2\" class=\"accordion__item__panel js-expandable-element\" aria-labelledby=\"what-is-the-difference-between-wood-joists-and-duospan-or-plas-pro-joists\" hidden=\"true\" aria-hidden=\"true\">\n        <div class=\"accordion__item__panel__inner\">\n            <p>Wood is the most commonly used subframe material. However, wood only performs well under ideal circumstances and if the cut elements are regularly retreated. In applications where the wood is in contact with the ground or has limited airflow, the intended lifespan of the frame can be impeded significantly. Our recommendation is to use our innovative DuoSpan framework or Plas-pro to achieve a non-rot solution.<\/p>\n<p>When using Plas-Pro as an alternative to wood, please bear in mind that the structural spans are not equivalent. Please refer to the Plas-Pro brochures and installation guides for further details. If in doubt then contact a member of our technical team on technical@millboard.co.uk.<\/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-3\" type=\"button\" class=\"accordion__item__trigger js-accordion-button\" id=\"what-is-the-difference-between-duospan-and-plas-pro\"><h3 class=\"accordion__item__heading\">What is the difference between DuoSpan and Plas-Pro?<\/h3><\/button>\n\n    <div id=\"accordion-panel-3\" class=\"accordion__item__panel js-expandable-element\" aria-labelledby=\"what-is-the-difference-between-duospan-and-plas-pro\" hidden=\"true\" aria-hidden=\"true\">\n        <div class=\"accordion__item__panel__inner\">\n            <p>DuoSpan\u2122 combines the strength of aluminium with the design flexibility of recycled plastic. This achieves a system that provides exceptional ease of installation, enormous strength and durability. DuoSpan has been designed by industry professionals to comply with Eurocode 1: Actions on Structures (BS EN 1991-1-1). The system has been assessed for point loading in relation to both domestic and commercial use, making it suitable for a range of applications.<\/p>\n<p>There may be situations where our Plas-Pro framework items may be more suitable than the DuoSpan, such as furniture framework or areas in wet\/marine environments. Manufactured in the UK from 100% recycled plastic and they will never suffer from insect attacks or rotting, they are designed for longevity and reliability.<\/p>\n\n                    <\/div>\n    <\/div>\n<\/div>\n\n<\/div>\n    <\/div>\n<\/section>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":10,"featured_media":0,"parent":4187,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"class_list":["post-560","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 Decking Subframe FAQs | Millboard<\/title>\n<meta name=\"description\" content=\"Answers to common decking subframe questions covering framing systems, Plas-Pro, DuoSpan, DuoLift installation and structural support guidance.\" \/>\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\/frequently-asked-questions\/subframe-frequently-asked-questions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Subframe FAQS\" \/>\n<meta property=\"og:description\" content=\"Answers to common decking subframe questions covering framing systems, Plas-Pro, DuoSpan, DuoLift installation and structural support guidance.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.millboard.com\/en-us\/frequently-asked-questions\/subframe-frequently-asked-questions\/\" \/>\n<meta property=\"og:site_name\" content=\"EN-US - Residential\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-10T12:36:56+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<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/frequently-asked-questions\\\/subframe-frequently-asked-questions\\\/\",\"url\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/frequently-asked-questions\\\/subframe-frequently-asked-questions\\\/\",\"name\":\"Composite Decking Subframe FAQs | Millboard\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/#website\"},\"datePublished\":\"2026-01-05T12:27:07+00:00\",\"dateModified\":\"2026-04-10T12:36:56+00:00\",\"description\":\"Answers to common decking subframe questions covering framing systems, Plas-Pro, DuoSpan, DuoLift installation and structural support guidance.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/frequently-asked-questions\\\/subframe-frequently-asked-questions\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/frequently-asked-questions\\\/subframe-frequently-asked-questions\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/frequently-asked-questions\\\/subframe-frequently-asked-questions\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Frequently Asked questions\",\"item\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/frequently-asked-questions\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Subframe FAQS\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/#website\",\"url\":\"https:\\\/\\\/www.millboard.com\\\/en-us\\\/\",\"name\":\"Millboard\",\"description\":\"Live. 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