A high density, fire resistant sponge with a black or white intumescent coating on both main faces. These slabs are suitable for use as a permanent fire barrier in walls, floors and ceilings, or around services.
– Due to its high density, it can be used for large openings in floors, walls and ceilings
– Non-fibrous material is ideal for use in sterile areas or clean rooms
– Ideal for use under raised flooring as a firebreak, providing 1-4 hours fire protection
Envirograf NF Slab is cut to suit the opening size and you cut around any services
like a jigsaw, adhering each section or joint with the jointing compound.
Where services are PVC, i.e. Pipes and cables, Envirograf Wraps should be used,
50mm wraps for two hour fire protection and 100mm wide wraps for four hour
protection. The wraps can also be fitted around steel, copper and aluminium pipes to
stop the pipes overheating and passing the heat from one side to the other of the fire
When fitting NF Slabs in a floor opening and the mesh is being used to help supports
the slabs, the wire mesh should be laid into the opening, bending up the sides and
fixed with screws, raw-plugs and large washers, or split nailing with large washers.
Then lay the slab on top of the mesh adhering all the sides with jointing compound
and all cut joints. The whole barrier will dry hard in 10 minutes.
Where cable trays pass through the barrier so Envirograf Intumescent E1/20/30
should be fitted over cables.
REF THICKNESS SLAB SIZE PROTECTION
NF50/5 50mm 500mm x 1000mm 2 hours White Coated
NF50/7 50mm 750mm x 1000mm 2 hours White Coated
NF50/10 50mm 1000mm x 1000mm 2 hours White Coated
BNF50/5 50mm 500mm x 1000mm 2 hours Black Coated
BNF50/7 50mm 750mm x 1000mm 2 hours Black Coated
BNF50/10 50mm 1000mm x 1000mm 2 hours Black Coated
* Jointing compound supplied
All of our 'in stock' product orders will be shipped same day, as long as the order has been processed before 3pm - this is simply to be in a position to catch the courier pickups.
Some of couriers are explicit in their non-liquid deliveries so if you have ordered a mixture of ambient and liquid products your order has to be split across two couriers. These are lead by courier company policies, however the courier selection was done of price and so you can be safe in the knowledge that you will be getting the most competitive delivery prices around.
We deliver across the Island of Ireland and aim for 48/72hrs deliveries on all our orders. If you order a product that is 'out of stock' we will get them shipped by our supplier, Envirograf UK over night for our next days deliveries.