Gallery, Projects and General > How do I??

Insulating a Roof Gap

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lordedmond:

--- Quote from: awemawson on May 21, 2015, 12:39:19 PM ---
--- Quote from: Stuart on May 21, 2015, 12:30:24 PM ---Andrew

Look here

http://www.irrigationonline.co.uk/black-armaflex-rubber-pipe-insulation-lagging-13mm-wall-thickness/

They have it up to 4 inches on the drop down list to bulk it up one inside the other


Stuart

--- End quote ---

Now that's pretty close in the 4" size with the 1/2" walls giving 5"  :thumbup:

But £17  metre  :bugeye: I only need about 18 metres or so so there £300 gone bang   :( Now how much heat am I loosing and how much does £300 buy  :scratch:

--- End quote ---

Andrew
But you did not mention price :doh:
Stuart

NormanV:
What about using 6" square foam strips instead of round? That should be easily available from foam suppliers. I used to work for a company that cut foam to size for packaging using a large band saw.

awemawson:
Still got contacts Norman?

I can only find 4" and then only the 'upholstery' type which rapidly crumbles away to dust - there is a white firm foam used in some packing that I  'think' would be ideal - not sure what it's composition is but again 'I think' it's "None cross link Polyethylene cushioning foam" according to this web page:

http://www.foampackaging.co.uk/materials/stratocell-foam/

Now - anyone got a big sheet of that 6" thick ........  :ddb:

tom osselton:
Just a thought, If you just plug the inside wouldn't there be a problem with pooling water damaging walls, or mold?

chipenter:
I used to cut Celotex to size with a hand saw , it's avalable in up to 200mm thick sheets at £80 a sheet its not cheep , and the dust is full of static and seems to follow whoever dose the sawing .

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