I am having cavity walls insulated soon and the company recommended more
loft insulation. It currently has the 4" thick old rockwool stuff from the
60's. Problem is most of the loft is boarded. If we were to increase depth
of the insulation do I then have to add extra supports to allow me to re-lay
the bords, or is there some other way to fix this? Is there a better
insulation material that can be layed between rafters and provide a better
insulation level, without increasing its depth?
Thanks
Paul

"me" wrote:
I am having cavity walls insulated soon and the company recommended more
loft insulation. It currently has the 4" thick old rockwool stuff from the
60's. Problem is most of the loft is boarded. If we were to increase depth
of the insulation do I then have to add extra supports to allow me to
re-lay the bords, or is there some other way to fix this? Is there a better
insulation material that can be layed between rafters and provide a better
insulation level, without increasing its depth?
Thanks
Paul

They probably want to bring it up to 8 inches in which case I don't see how
you can re-lay the boards on top of 8 inches of insulation without risking
damage to bedroom ceilings. Can't they just upgrade the area that isn't
boarded?

Phil

On Mon, 24 Apr 2006 10:07:42 GMT, "me" wrote:

|I am having cavity walls insulated soon and the company recommended more
|loft insulation. It currently has the 4" thick old rockwool stuff from the
|60's. Problem is most of the loft is boarded. If we were to increase depth
|of the insulation do I then have to add extra supports to allow me to re-lay
|the bords, or is there some other way to fix this? Is there a better
|insulation material that can be layed between rafters and provide a better
|insulation level, without increasing its depth?

IME boards to store the junk in the loft are much more valuable to me than
any extra insulation might ever be. The space under my boards is full of
insulation, I just added more insulation, across the line of the rafters,
on the unboarded areas.

The agenda of the salesman is to sell more product regardless of how much
value the product is to you. He is probably generally correct about
adding more loft insulation but will not take into account the value of the
boards to you.
--
Dave Fawthrop dave hyphenologist co uk Google Groups is IME the *worst*
method of accessing usenet. GG subscribers would be well advised get a
newsreader, say Agent, and a newsserver, say news.individual.net. These
will allow them: to see only *new* posts, a killfile, and other goodies.

me wrote:
I am having cavity walls insulated soon and the company recommended more
loft insulation. It currently has the 4" thick old rockwool stuff from the
60's. Problem is most of the loft is boarded. If we were to increase depth
of the insulation do I then have to add extra supports to allow me to re-lay
the bords, or is there some other way to fix this? Is there a better
insulation material that can be layed between rafters and provide a better
insulation level, without increasing its depth?

You can replace the old with better insulation, but (of course)
it's more expensive. As you've got boards over4" of insulation,
the value of the insulation will be a lot better than unconfined
4" insulation anyway. Is it worth it?

Chris Bacon wrote:
me wrote:
I am having cavity walls insulated soon and the company recommended more
loft insulation. It currently has the 4" thick old rockwool stuff from the
60's. Problem is most of the loft is boarded. If we were to increase depth
of the insulation do I then have to add extra supports to allow me to re-lay
the bords, or is there some other way to fix this? Is there a better
insulation material that can be layed between rafters and provide a better
insulation level, without increasing its depth?

You can replace the old with better insulation, but (of course)
it's more expensive. As you've got boards over4" of insulation,
the value of the insulation will be a lot better than unconfined
4" insulation anyway. Is it worth it?

If most joists are 7" x 2" , how do you fit 8" insulation?
If you can easily lift the flooring, then re-insulate with Knauf
RockWool Slab. There is 75mm and 100mm. thickness. You can carve it
with a Bread knife. It is REALLY god at sound insulation. When you ut
the loft flooring back USE SCREWS.

I did put the specs on this site some time back. Do a search in here
for rockwool slab and/or Chris McBrien.

Regards Chris.