Keith Dunbar wrote:
You must forgive my ignorance of the names of all the funny bits of roofs
....
(maximise screen to view this best)
THese pictures only really work if you use a non proportional (e.g.
courier) font to draw them and view them....
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| oooooooooo | | ooooooooo |
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There is just about room for a 4' width of chipboard at "ooooooooo"
Where would I be best (i.e. cheapest) going to for this PIR board?
A specialist insulation provider probably. One of the outfits that can
supply "seconds" would be good for this application.
How strong is it?
Fairly stiff - stronger that expanded polystyrene for example.
Can one stand on it?
If it is laid flat on the floor then yes. If you are laying it across
joists then I would not stand over the centre of the span unless it had
a board over the top.
I would need lots of quite long screws to fix the
flooring to the joists.
Probably.
Is there any reason why I should need to. Could I create a sort of raft of
flooring above the PIR?
If you have a reasonable area of it, and the covering will remain in one
lump without fixing then a raft would work.
--
Cheers,
John.
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