Author Topic: new workshop - insulation advice needed  (Read 1243 times)

Offline Bee

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Re: new workshop - insulation advice needed
« Reply #25 on: May 05, 2017, 07:03:44 PM »
If it is attached to the house building regs will most likely require an inner lining of plasterboard over the OSB for fire retarding.
The outside wall needs a vapour barrier on the inside of the insulation behind the plasterboard. If you want a gap between the insulation and the wall blocks it will probably be pointless unless it is vented to the outside otherwise moisture will just move between the wall and the vapour barrier between night and day as the temperature profile shifts. For a spacer use 'corex' the plastic equivalent of corrugated cardboard cut into squares or strips and tacked to the wall. The holes though it allow air circulation
The wall against the house may not need insulation unless it is a cavity wall which will act like a heat chimney up to the roofline. If it is not a cavity wall it should not have a vapour barrier because moisture will be trying to escape from the house more than from the workshop.
EPS is up to 20% better than good fibreglass insulation. An 11 in cavity wall is equivalent to 1in of EPS.

Offline Pete W.

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Re: new workshop - insulation advice needed
« Reply #26 on: May 06, 2017, 05:01:40 AM »
Hi there, Bee,

Is 'corex' the stuff that estate agents (UK terminology) use for their 'For Sale' or 'Sold' signs? 
Best regards,

Pete W.

If you can keep your head when all about you are losing theirs, you haven't seen the latest change-note!

Offline Bee

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Re: new workshop - insulation advice needed
« Reply #27 on: May 19, 2017, 03:17:08 PM »
Yes, and coming soon to a street near you some political signs. Another possible source if you can find it is they sometimes use it for wrapping large cable drums eg for phone or tv cable though you have to flatten it out again on a hot day.