Part of the Building Innovation collection, the 120mm EcoTherm Inno-Fix Flat Roof Insulation Board delivers a lightweight, straightforward installation option for new roof builds and thermal upgrades to existing structures. These 120mm EcoTherm Inno-Fix rigid boards work seamlessly with single-ply waterproofing membranes across concrete, metal, and timber substrates, delivering thermal conductivity of 0.022 W/mK.
Ensure the roof deck is clean and dry before fitting 120mm Inno-Fix boards. When installing flat Inno-Fix insulation boards, the roof structure must be graded to direct all water to drainage outlets. Position a minimum 120mm upstand of insulation around the roof edge and apply approved angle fillets at upstands or kerbs.
Inno-Fix withstands exposure to dilute alkalis and acids, mineral oil and petrol. The insulation does not resist ketonic solvents. Do not use damaged boards.
When properly installed, Inno-Fix offers lasting performance with durability determined by the underlying structure and usage conditions. Avoid using to bridge dampness or in persistently damp or humid environments. The fibre-free core and facings of Inno-Fix resist mould and microbial colonisation and offer no nutritional value to pests.
Browse our full EcoTherm Products range and refine by thickness or coverage using the filters on the left. For product suitability advice or bulk pricing, contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Competitive UK EcoTherm Insulation Pricing.








