Lobster wrote:
Phil L wrote:

The brushes are put down from top to bottom to stop the insulation
spilling into next doors cavity, which by law is classed as
trespass, and this is what causes damp, because 'their' insulation
will not go from DPC to roofline as yours will - it's only when
insulation is stopped halfway up a wall that water can track across
from outside brick to inside block.

How do these brushes get fitted, out of interest - through holes? How
do they get into position?

David

A hole is drilled at the top of the wall and another at the bottom, a steel
chain is fed into the top and allowed to drop down until it reaches the
bottom where a hook ( most often a bucket handle bent into a hook shape) is
in place....the barrier is attatched to the protruding chain at the top and
pulled through from the bottom, so that the barrier follows the chain into
the cavity and then the chain is removed.


We were often asked to do a flat out of a pair, or just do 'upstairs because
the bedroom's freezing', and could we not put a barrier sideways....no one
could seem to understand that gravity wouldn't allow us to drop a steel
chain sideways.

--
Phil L
RSRL Tipster Of The Year 2008