Isover ULTIMATE™ Cavity Barriers are multi-purpose insulation products providing fire, acoustic and thermal performance in concealed wall cavities. Isover ULTIMATE™ Cavity Barriers conform to building regulation definitions of a cavity barrier, cavity stop, flexible closer and effective edge sealing.
View NBSPlus product specification by NBS
- Excellent fire properties - Isover ULTIMATE™ Cavity Barriers provide up to 120 minutes fire protection in concealed cavities to help meet requirements of Approved Document B Fire Building Regulations (England & Wales) and Section 2 (Scotland).
- Excellent Acoustic Properties - Cavity Barrier - Isover ULTIMATE™ Cavity Barriers minimise flanking sound transmission along the wall cavity to help meet requirements of Approved Document E Acoustic Building Regulations (England & Wales) and Section 5 (Scotland).
- Provides effective edge sealing for party walls - Isover ULTIMATE™ Cavity Barriers reduce the thermal bypass effect by providing edge-sealing to the separating cavity wall at external wall and roof junctions.
- Compact product range - Only 3 sizes needed to suit all cavity widths up to 100mm (50-65mm, 66-80mm and 81-100mm). Allows for simple, easy and cost effective storage.
- Colour coded packaging - Avoids installation of the incorrect barrier sizes on-site. Allows for easier picking of the correct product in the warehouse.
- Robust flexible material properties - Resilient to damage in storage, during transportation and on site during installation.
- Storey height product - Reduces the thermal bypass effect by providing edge-sealing at the party wall/external wall junction. Fewer joints means less chance of installer error on site and a reduction in installation time.
- Non-combustible Isover glass mineral wool insulation has an A1 Euroclass fire rating – the best attainable.
- Protected planet - Zero Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) of less than 5.
|Order Code||Width (mm)||Length||Product Name||Cavity size||Item type||Sleeve colour|
|5200634281||100||1200||ULTIMATE Cavity Barrier - 30 minutes||50-65||Barriers||Yellow|
|5200634394||100||1200||ULTIMATE Cavity Barrier - 30 minutes||66-80||Barriers||Blue|
|5200634404||100||1200||ULTIMATE Cavity Barrier - 30 minutes||81-100||Barriers||White|
|5200634407||200||1200||ULTIMATE Cavity Barrier - 60 minutes||66-80||Barriers||Blue|
|5200634413||200||1200||ULTIMATE Cavity Barrier - 60 minutes||50-65||Barriers||Yellow|
|5200634419||200||1200||ULTIMATE Cavity Barrier - 60 minutes||81-100||Barriers||White|
|5200634420||300||1200||ULTIMATE Cavity Barrier - Party Wall||50-65||Barriers||Yellow|
|5200634421||300||1200||ULTIMATE Cavity Barrier - Party Wall||66-80||Barriers||Blue|
|5200634422||300||1200||ULTIMATE Cavity Barrier - Party Wall||81-100||Barriers||White|
|5200634423||300||2400||ULTIMATE Cavity Barrier - Storey Height||50-65||Barriers||Yellow|
|5200634424||300||2400||ULTIMATE Cavity Barrier - Storey Height||66-80||Barriers||Blue|
|5200634425||300||2400||ULTIMATE Cavity Barrier - Storey Height||81-100||Barriers||White|
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