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Have been looking at using celotex for some internal insulation to my solid walls, which currently have lath/plaster with about an inch or so air gap at the back.
I've been told by someone recently who did it this way that its s good idea but want to check any pros and cons first.
He left the lath/plaster in place, fitted 50mm celotex direct to plaster, so there are no joists/stud work just celotex right next to each other with the Alu tape sealing the joins.
Then fitted std plasterboard over the top and skimmed.
Is this ok to do? I like the idea of less mess, and still leaves an inch or so air gap on the interior brickwork for air movement,
If you were screwing through the plasterboard/celotex presumably that would breach the dpm is that ok given its just a screw or should they then be sealed over with something different
Thanks for any advice
I've been told by someone recently who did it this way that its s good idea but want to check any pros and cons first.
He left the lath/plaster in place, fitted 50mm celotex direct to plaster, so there are no joists/stud work just celotex right next to each other with the Alu tape sealing the joins.
Then fitted std plasterboard over the top and skimmed.
Is this ok to do? I like the idea of less mess, and still leaves an inch or so air gap on the interior brickwork for air movement,
If you were screwing through the plasterboard/celotex presumably that would breach the dpm is that ok given its just a screw or should they then be sealed over with something different
Thanks for any advice