We had a new consumer unit installed recently.
Large hole in porch ceiling where cables go off to various circuits.
When we open the cupboard suction pulls cavity wall insulation through
hole into cupboard.
Is there anything I can use to seal around grey twin and earth? Probably
mostly fairly old (not rubber)but in good condition.
Invisible Man coughed up some electrons that declared:
Funnily enough I was examining a can of Screwfix's NoNonsense own brand in
their depot this very day and it said suitable for window frames, gaps in
insulating board and around cables and pipes.
We're asssuming that one doesn;t bury the cables in so much that they
On Wed, 22 Apr 2009 20:56:18 +0100, Invisible Man wrote:
How big is large, meaning in gap between the hole edges and the cable
Expanding foam is tricky and very sticky stuff to use. Trying to fill a
hole more than an inch or so wide over head with domestic type "foam in
can" could well produce a story as good as the one already in the wiki.
It would also be a PITA should you need to add or change any circuits.
Think I'd stuff a bit of glass wool up the hole and cover that with a thin
bit of wood with a shapped notch to go around the cables attached with
screws to the ceiling.
Thanks to all.
I find trying to use expanding filler a nightmare at the best of times.
Hole is in ceiling about an inch above the CU and about 6 inches wide
with cables entering it at all angles. Not a pretty sight.
I will probably use some carefully profiled hardboard or mdf. Glass wool
is a good idea for a final seal.
Might it be possible to buy one of those things to go behind a letter
box, with bristles about an inch long to keep the draught out or stop
peeping Toms or whatever. Cut it in two at the ends and fit it round the
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