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Firoblok Fire Sleeves for Pipes

Product 110


Intumescent fire protection sleeves to protect cables, pipes and trunking

£0.00 ex. Vat



Firoblok Fire Sleeves for Pipes

Firoblok fire sleeves for pipes, 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 pipe at either end and preventing firespread. They also absorb heat to help prevent services, pipes, and cables from overheating.  Highly flexible, moisture resistant and feature acoustic properties.

See the order reference tab for all available sizes.

Specially designed passive fire range to meet Document B of Building Regulations, and also tested to European Standards. Explore our further range of Firoblok Sleeves and Ducting Protection online now.

Envirograf ® passive fire products carry the hallmark of excellence, reflecting the high standards that prevail in its laboratory, test rig, and manufacturing plant. Envirograf® passive fire products are subject to rigorous quality control which, at all stages, ensures products remain at the leading edge of fire containment technology. This quality has earned the company and its passive fire products a high reputation. With its operating system accredited to ISO9001.


– 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

Application Instructions

Mark the outline for the Firoblok sleeve on the substrate.
Cut out the hole with a powered hole cutter or padsaw and clean down edges.
Fit the Firoblok sleeve over the vent and fit to the ducting or service passing through.
Push the assembly back into the substrate until flush.


Order References / Sizes

For pipes

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

Available in 100mm, 150mm, 200mm and 500mm lengths.

Add /P to above references to add end plates to the sleeve.