Envirograf Timber Frame Cavity Barrier Range

Availability: In Stock

Not available to purchase online, please CONTACT US. A range of lightweight, adhesive-backed cavity barriers, ideal for use in timber-framed buildings, party walls and cavity surfaces with with a rendered finish. CV Strip Cavity Barriers A flexible, PVC and foil-clad intumescent strip with self-adhesive backing to adhere it to walls. High expansion intumescent will lock against the external side of the internal wall in a fire, giving full protection without affecting the outer wall. FB/TS Cavity Barriers A fireproof sponge barrier with intumescent coating, clad in UPVC foil and red PVC coating to seal the barrier against moisture. Adhesive backing makes it easy to affix to the external face of the internal wall, expanding at medium pressure in a fire to seal off fire and smoke.

Envirograf Timber Frame Cavity Barrier Range


Both barrier ranges will provide a minimum of 2 hours protection.

CV strip barriers are ideal for modular buildings where space is limited, due to their small profile.

FB/TS is a more robust barrier that is ideal for load-bearing party floors and walls.

Easy to install with adhesive strip, but can be fixed down with screws or nails to provide additional fixing.

Order References:

CV Cavity Barrier Strip

Ref                   Width         Thickness           gap size protection

CV30/4           30mm            4mm                    30/45mm

CV30/6           30mm            6mm                    50/60mm

CV30/8           30mm            8mm                    60/70mm

CV30/10 v      30mm          10mm                   80/90mm

CV30/15 v      30mm          15mm               100/120mm

CV75/4           30mm            4mm                   30/50mm

CV75/10 v      75mm          10mm                 80/100mm

Available in 1 metre and 2 metre lengths.

V – with Brackets

FB/TS Cavity Barrier

FB/TS             Timber frame with brick/timber facing

50mm sponge & intumescent for party walls and floors

FB/TS/TB     Timber frame with tile facing

50mm sponge & 2 face intumescent

for party walls and floors

Sizes:      50mm x 50mm           40mm x 50mm


Other cavity barriers are available to view here.


Next day delivery available

peace of mind

14 day returns policy

price match

Call for the best prices

01752 690997

Speak to our experts

Fire Rating