Flat roof insulation
In message , Bruce
writes
" wrote:
My house was built with a flat roof. The previous owners had pitched
roof constructed on top of it so that when you enter the roof space
you can walk anywhere on the original bitumen & gravel finish. We
have broken through the old roof to fit ventilation trunking for a
bathroom extractor and I see that the old roof is made up of a
boarding material about 50-75 mms thick which seems to have been made
with a straw-like material.
Probably "woodwool", made of long wood fibres bound together with
cement.
Strammit?
regards
--
Tim Lamb
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