On 04/10/10 22:26, Andrew Gabriel wrote:
In ,
writes:
door.

Opening up the cavity is no big deal.

I will need to hold back the existing cavity wall insulation whilst cutting
back. I believe that it will be a wool filled insulation.

That will probably just stay put.
Be thankful it's not tiny polystyrene balls...


Yes - I can personally confirm that wool (or blown fibre) does not tend
to fall out - much at least. It's worth having a bit of glass wool to
hand (old tank jacket is a good source if there's one down the tip) and
just stuff a bit back as you go. But mostly it is pretty stable.