Envirograf Intumescent Wraps
Envirograf’s intumescent wraps are designed to create a fire stopping barrier around pipes and cables. They can be cut to size, to fit around any type of pipe or cable.
These units can be installed in:
- Brick walls, floors or ceilings
- Block walls, floors or ceilings
- Envirograf’s Intumescent Coated Slabs
- Envirograf’s Non-Fibrous Slabs
- Envirograf’s Fire Mortar
How do intumescent pipe wraps work?
The intumescent material in the pipe wraps expands when heated. This insulates the substrate and seals it off. The wraps crush PVC pipes, trunking and cables, to seal the fire off. They are used on steel pipes to cool them down, to prevent them from overheating.
These pipe wraps can achieve up to 4 hours fire protection.
They can be used around cables and pipes with a wide range of diameters: between 15mm and 600mm.
They crush PVC and UPVC pipes and cables in a fire, to prevent the passage of fire and smoke for a given time period.
By insulating metal pipes, heat spread is reduced throughout the structure.
These wraps can either be bought individually, or on a continuous 10m roll, making them highly versatile.
The materials will last a lifetime in-situ.
Order References and sizes:
When individual wraps are desired, please select the internal wrap diameter required, based off the table below.
For continuous wraps, please bear in mind the following:
The EWE1 15-200mm continuous wraps are suitable for pipes with diameters of 15-200mm. They can achieve up to 3 hours fire protection.
The EWE2 40-400mm continuous wraps are suitable for pipes with diameters of 40-400mm. They can achieve up to 4 hours fire protection.
REF PIPE SIZE INTERNAL EXTERNAL
INTERNAL WRAP WRAP
DIAMETER DIAMETER DIAMETER
EW 18 015mm 018mm 024mm
EW 25 022mm 025mm 031mm
EW 33 025mm 033mm 039mm
EW 40 032mm 040mm 046mm
EW 50 040mm 050mm 056mm
EW 55 050mm 055mm 061mm
EW 60 055mm 060mm 066mm
EW 83 065mm 083mm 091mm
EW 90 075mm 090mm 98mm
EW115 100mm 115mm 123mm
EW135 125mm 135mm 145mm
EW150 130mm 150mm 160mm
EW165 150mm 165mm 177mm
EW215 175 or 200mm 215mm 229mm
EW250 225mm 250mm 266mm
EW300 250mm 300mm 320mm
EW350 250mm 350mm 374mm
EW400 350mm 400mm 452mm
EW450 400mm 450mm 506mm
EW500 450mm 500mm 564mm
EW600 500mm 600mm 676mm
Application Instructions – individual wraps:
The individual wraps can be wrapped around the pipe or cable where they pass through walls, floors, or ceilings.
Use the adhesive strip on the wrap to fix both ends of the wrap together.
Finally, push the wrap into the hole around the service, leaving 10mm protruding from the wall face which can be pointed around where necessary.
Application Instructions – continuous wraps:
These wraps are applied in layers, depending on the size of your pipe.
REF WRAP WIDTH WRAP LENGTH
EWE1 30mm 10m
1 layer for 15-65mm diameter pipe, 2 layers for 75-127mm diameter pipe, 3 layers for 160mm-200mm diameter pipe.
REF WRAP WIDTH WRAP LENGTH
EWE2 50mm 10m
1 layer for 40-115mm diameter pipe, 2 layers for 127- 215mm diameter pipe, 3 layers for 250mm-400mm diameter pipe
Use the adhesive strip to the pipe once cut to size.
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