Ensure superior cavity wall insulation with this 5-piece insulated cavity closer set, ideal for window and door frames, preventing cold bridging. Pack total coverage is 6m. Each unit measures 1.2m and fits cavity widths from 50 - 100mm . Made with EPS core and UPVC frame, this cavity wall closer prevents cold bridging and boosts energy efficiency. Perfect for airtight, thermally insulated cavity installations in timber, steel, or masonry builds. Meets UK building regulations and serves as a fire-rated cavity barrier for new builds, extensions, and refurbishments. Easy to handle and install.

Each cavity closer for timber frame and masonry construction is 1.2m long with adjustable grooves to fit 50-100mm cavity walls. The PVCu cavity closer features EPS insulation for enhanced thermal break performance. Delivers airtight sealing for energy-efficient window installation. Compliant with BDA Kiwa, NHBC, and LABC standards, this fire-rated cavity closer improves air tightness and meets all building regulation requirements. Acts as a durable cavity barrier insulation that reduces cold bridging and is ideal for DIY or professional use.

Something not quite right? You have 28 days from the day you receive it, to send something back.

Please note, we cannot offer refunds on fashion face masks, cosmetics, pierced jewellery, adult toys, and swimwear or lingerie if the hygiene seal is not in place or has been broken.

Items of footwear and/or clothing must be unworn and unwashed with the original labels attached. Also, footwear must be tried on indoors. Items of homeware including bedlinen, mattresses, and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights.

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