Stacks
The two pipe system can sometimes cause problems. There
are clearing eyes at direction changes and junctions in
the waste stack, but the covers can often prove difficult
to remove. Use oil to soak the cover, particularly the bolts
before removing the cover. Insert a rod in the direction
of the blockage. Rinse water through the system to flush
any debris away before re-sealing. Before replacing the
cover smear a little grease around the frame to stop any
rust in the future.
If the problem arises in the soil stack, the job is more
difficult and unpleasant to tackle. Look for the clearing
eyes. Attempt to open the cover or access plug. To unblock
soil stacks an auger should be hired to use. An auger is
a flexible coiled wire which will pass through small diameter
wastepipes to clear a blockage. The corkscrew head is passed
into the wastepipe through the opening in the direction
of the blockage. When the obstruction is found, the cranked
handle at the other end is clamped and turned. Next either
push or pull the rotating head when the blockage is engaged
and then dislodge. Rinse water through the system to flush
any debris away - a hose is usually helpful at this stage.
Cleanse the area carefully and disinfect the surrounding
system thoroughly once the cover has been replaced. If the
clearing eyes prove impossible to remove, particularly in
an older property where the pipe is made of cast iron -
call in a professional cleaning company. This is because
it will probably have to be accessed and unblocked via the
vent above the roof.
Hoppers
The hopper is a collection point for water from indoor
appliances. It is normally installed at first floor level
on an outside wall and linked to a downpipe leading to a
gully. If the hopper stack is blocked, it can usually be
cleared by hand - protective gloves are advisable. Remove
the debris from the hopper then use a rod or stick to gently
plunge the drainpipe. Use a wire coathanger to clear the
bottom end of the pipe. Cleanse and disinfect the inside
of the hopper and flush the pipe.
