I've been watching a lot of Holmes on Homes videos on youtube,
pretty certain that in one he said that each puncture hole in the membrane lets through a cupful of water a year.

He rips out a lot of soggy mouldy rockwool.

He's canadian - they need insulation there summer and winter !

George


On Saturday, December 29, 2018 at 3:03:06 PM UTC, Chris Green wrote:
I've been lookng at some FAQs and fitting details relating to SIPs
supplied by a local supplier (http://www.supersips.uk.com).

As far as I can tell from this information it would seem that both the
DPM under the floor and the breathable membrane between the panels
and cladding are punctured by the fixings. The underfloor DPM seems
to have fixing bolts through it and the breathable wall membrane is
fixed using 'staples'.

Is this normal, it seems to rather defeat the object of using the
membranes?

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Chris Green
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