{"product_id":"ametalin-thermalcav-drainage-battens","title":"Ametalin ThermalCav™ Drainage Battens 20mm Pack of 25","description":"\u003cp\u003eAmetalin ThermalCav Drainage Battens do two jobs with one strip. 20 mm of high density polypropylene and XPE gives an R0.26 thermal break and a 20 mm drained, ventilated cavity at the same time. 45 mm x 1.2 m, pack of 25.\u003c\/p\u003e\n\u003ch3\u003eOne product instead of two\u003c\/h3\u003e\n\u003cp\u003eA steel frame under the NCC 2022 rules needs an R0.2 thermal break, and a modern wall or roof build-up usually wants a 20 mm ventilated cavity as well. Doing that with a thermal break strip plus a separate batten means two products, two fixing operations and a stack-up you have to think about. ThermalCav is both at once, at R0.26 in situ, which clears R0.2 with margin.\u003c\/p\u003e\n\u003ch3\u003eThe 20 mm matters\u003c\/h3\u003e\n\u003cp\u003eNCC 2022 Volume One F8D5 and J4D3, and Housing Provisions 10.8.3 and 13.2.2, are the clauses that drive air gaps and ventilation in these assemblies. 20 mm in one piece removes the doubling up you would otherwise do with a 10 mm batten.\u003c\/p\u003e\n\u003ch3\u003eFix straight through it\u003c\/h3\u003e\n\u003cp\u003eCompression resistance is 497 kPa over a 50 x 50 mm area and it takes normal foot traffic. Fixings are meant to pass through the batten into the framing behind, so adjust screw length for the extra 20 mm. It cuts, drills and screws without splitting.\u003c\/p\u003e\n\u003ch3\u003eUnder a metal roof\u003c\/h3\u003e\n\u003cp\u003eIt holds the sheet off the sarking, so the dew point stays on the underside of the roof cladding and the cavity ventilates it away rather than letting condensation form on the membrane.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eSelf adhesive, no temporary fixings. Clean dry framing, peel the liner, centre it on the member, press it home, cladding straight after. Termite, mould and mildew resistant, UV and fire rated, long term heat resistance 90 degrees.\u003c\/p\u003e","brand":"Ametalin","offers":[{"title":"45 mm x 1.2 m x 20 mm, pack of 25","offer_id":45385992044726,"sku":"TCDB-451200","price":216.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Ametalin-ThermalCav-Drainage-Batten_1024-x-1024.jpg?v=1787845320","url":"https:\/\/awbm.com.au\/products\/ametalin-thermalcav-drainage-battens","provider":"AWBM","version":"1.0","type":"link"}