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- 7 Aug 2020
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Hi,
Hoping for some advice. We have a large concrete panel garage that we are about to convert into a games room by adding 4by2 stud walls, insulation and plasterboarding. We heard there are often problems with cold concreate/supporting steels having condensation problems. Any advice on the best way to insulate and best prevent?
We currently thinking two options:
1) Attach foil vapour barrier (SuperFOIL SFTV Thermal Vapour Barrier) to the rear of a constructed 4 by 2 stud wall leaving a small gap between that and the concrete exterior to allow for some airflow. Fill the 4 by 2 with rockwool and on the warm interior side fix foil backed plasterboard.
2) As above but use 70mm celotex insulation instead of rockwool
Our fitter would rather use rockwool vs the mess of cutting celotex. We know that celotex offers better thermal insulation and we would need thicker rookwool top get the same level of insulation. Our other key concern is that rockwool may sag and fall back against the vapour barrier/exterior concrete wall. Any thoughts on rockwool vs celotex?
Someone has also suggested that it would be better to use moisture resistant plasterboard as this sort of room can be prone to damp (especially as it won't be heated at all times).
Thanks for your help, any advice appreciated!
Hoping for some advice. We have a large concrete panel garage that we are about to convert into a games room by adding 4by2 stud walls, insulation and plasterboarding. We heard there are often problems with cold concreate/supporting steels having condensation problems. Any advice on the best way to insulate and best prevent?
We currently thinking two options:
1) Attach foil vapour barrier (SuperFOIL SFTV Thermal Vapour Barrier) to the rear of a constructed 4 by 2 stud wall leaving a small gap between that and the concrete exterior to allow for some airflow. Fill the 4 by 2 with rockwool and on the warm interior side fix foil backed plasterboard.
2) As above but use 70mm celotex insulation instead of rockwool
Our fitter would rather use rockwool vs the mess of cutting celotex. We know that celotex offers better thermal insulation and we would need thicker rookwool top get the same level of insulation. Our other key concern is that rockwool may sag and fall back against the vapour barrier/exterior concrete wall. Any thoughts on rockwool vs celotex?
Someone has also suggested that it would be better to use moisture resistant plasterboard as this sort of room can be prone to damp (especially as it won't be heated at all times).
Thanks for your help, any advice appreciated!