way in which the integrity of walls and floors are breached, and
fire and smoke can find their way further through a building is
through the service pipes that run throughout that structure. These
could be PVC and metal pipes e.g. copper, some of which may be lagged.
The pipes may be passed though many different types of surfaces
e.g. hollow studded walls / partition walls, joisted floors, and
/ or solid walls and floors. A flexible and effective means of closing
off pipes and providing a good level of insulation from the spread
from one space to another via the pipe systems can be dramatically
improved through the use of Intumescent Pipe Bandages and Intumescent
Pipe Canisters / Closers.
FPB Intumescent Pipe Bandages for example are made of intumescent
material that’s enclosed in aluminium foil. The Pipe Bandages
fit around the pipes themselves, are attached with an adhesive tongue
and are compact enough to be fitted easily into the walls or floors.
Once installed around the pipe in the wall or floor there should
ideally be not more than a 10mm gap between the outside of the Fireplug
FPB Pipe Bandages and the wall or floor. Where there uneven areas
and for example where this gap size is exceeded, sand, cement, plaster
or good gap filler can be used.
operation the Intumescent fire protection material will automatically
expand when exposed to fire temperatures. This means that as the
PVC pipe that it’s enclosing becomes soft with the heat the
Intumescent material expands to fill its space and close off the
pipe. Copper pipes can also melt and the Pipe Bandages will again
expand to fill the space and close the gap in these circumstances.
Tests (1993) have shown that 150 minutes of insulation and integrity
were achieved using Intumescent Pipe Bandages.
FPC Intumescent Pipe Canisters / Pipe Closers consist of a metal
canister filled with intumescent material that fits around a pipe
and attaches to the wall or ceiling where that pipe enters / leaves
it thus giving extra insulation and integrity and effectively closing
off the pipes as they leave one space and enter another. The rating
of a Canister like this actually depends on a number of factors
including the type of plastic on the enclosed pipe, the size of
that pipe and the surrounding support. Pipe Canisters are relatively
easy to attach e.g. screws and a toggle clip.