• IWS Firoblok For Pipes & Cables
  • IWS Firoblok For Pipes & Cables
  • IWS Firoblok For Pipes & Cables
  • IWS Firoblok For Pipes & Cables
  • IWS Firoblok For Pipes & Cables

IWS Firoblok For Pipes & Cables

£11.80 £14.16 (inc. VAT)

Intumescent fire protection sleeves to protect ventilation ducting

Earn 14 loyalty points, worth £0.28, with this purchase.


Firoblok fire sleeves for pipes & cables. Ideal for services or pipes which pass through fire-rated block, brick, concrete or plasterboard. Specialised sleeves designed for electrical conduits are also available in this range. End plates are also available to seal penetrations in walls or floors, allowing services to pass through.

In the case of a fire, the intumescent material will expand, thus sealing the gap and preventing firespread. They also absorb heat to help prevent services, pipes and cables from overheating.  Highly flexible, moisture resistant and feature acoustic properties.

– No more corrosion problems due to copper pipes having contact with concrete surfaces

– Meets all regulations

– Allows for expansion and contraction of hot pipes and gives up to four hours protection

– Easy to cut; no more sawing and de-burring steel pipes

– Can be cut with a knife and off-cuts can be taped together, leaving no waste

– Will last a lifetime in-situ and will not degrade or deteriorate

Ref                  Internal diameter            External diameter

IWS18              18mm                                22mm

IWS25              25mm                                32mm

IWS33              33mm                                43mm

IWS40              40mm                                53mm

IWS50              50mm                                62mm

IWS55              55mm                                65mm

IWS60              60mm                                70mm

IWS83              83mm                                97mm

IWS90              90mm                              102mm

IWS100          100mm                              116mm

IWS115          115mm                               135mm

IWS127          127mm                              147mm

IWS150          150mm                              173mm

IWS165          165mm                              187mm

IWS215          215mm                              240mm


Tested to BS476 Part 22 (1987), achieving an integrity of 130 minutes in solid walls, 67 minutes in hollow walls, and 4 hours in concrete/block ceilings and walls.

Tested to European Standards EN1366-3 (2005), EN1363-1 (2000), and EN13501-2 (2004).

Technical Information
Application Instructions


Brand Envirograf
product review overlay image

Customer reviews

No reviews left yet
Write a review

No reviews have been left for this product, be the first to leave a review