Fire stopping
Collar, sealant or wrap that closes gaps around pipes and cables.
- Where it is used: Fire-resisting partitions and ceilings.
- Watch out: Normal foam is no good: use only products tested for that gap.
Brands and types in the UK (8)
Rockwool FirePro AIS 310ml
Fire resistant sealant for penetration seals and linear joints up to 4 hours.
Technical data
- Up to 4 hours fire resistance (EI 240)
- Acoustic performance up to 62dB
- Tack-free time: approximately 15 minutes
- Maximum joint width: 60mm
- Coverage: up to 5.9m per 310ml cartridge
Source: Builder Depot
Rockwool High Expansion Intumescent Sealant 310ml
Intumescent sealant for combustible materials, cables, and pipes; expands above 135°C to stop smoke and flames.
Technical data
- Up to 4 hours of fire protection
- Expansion at temperatures above 135°C
- Coverage: 5.9m
- Volume: 310ml
- Tack free time: 60 minutes
Source: Builder Depot
Rockwool 55mm Fire Rated Pipe Collar
Fire stop pipe collar for plastic pipework where it passes through walls and floors.
Technical data
- Provides up to 2 hours fire protection
- Tested to BS476: Part 20
- Diameter: 55mm
- Water resistant
- No maintenance required
Source: Builder Depot
Rockwool Ablative Coating 5L
Water-based paste for brushing or spraying on stone wool slabs to improve fire resistance.
Technical data
- Suitable for spray or brush application
- Size: 5L
- Water-based
- Ready to use viscous paste
- Supplied in 5L tubs
Source: Builder Depot
Rockwool Firestop Compound 22kg
Fire resisting seal around service penetrations in fire rated walls and floors up to 6 hours.
Technical data
- Tested to BS476: Part 20 1987
- Provides up to 6 hours fire protection
- Weight: 22kg
- No smoke emission
- Load bearing capability
Source: Builder Depot
Everbuild Fire Mate Intumescent Sealant
One-part emulsion acrylic intumescent acoustic sealant for joints in fire rated structures, resists fire up to 5 hours.
Technical data
- Up to 5 hours fire resistance
- Tack free in 15-minutes
- For joints up to 50mm wide
- Acoustic properties for sound deadening
- No priming required for most substrates
Source: B&Q
4FireDoors Intumescent & Acoustic Acrylic Sealant
Halogen-free intumescent and acoustic acrylic sealant with 4 hour fire resistance.
Technical data
- Fire rated to 240 minutes
- Tested to BS476 part 20
- Standards Met: BS EN 1366-4
- Skinning time: 15 minutes to 1 hour
- Size: 310 ml
Source: Wickes
Sealprem Premfire Intumescent & Acoustic Sealant
Halogen-free polymer emulsion sealant that swells above 125°C to form char restricting smoke and fire.
Technical data
- Volume: 310ml
- Halogen-free
- Paintable
- Joints up to 35mm deep without slumping
- Will not harden or crack with age
Source: B&Q
Sources: product listings from B&Q, Builder Depot, Wickes, checked on 31-10-2026. Photos are from Builder Depot (with permission) the manufacturer or the shop (shown under each photo); where there is no photo we show a drawing. Original Fixiz Academy text; data can change, always check the manufacturer data sheet.