Hi All.
I've finished all the structural work on my garage, just got some rendering to do to finalise the exterior and I am now looking towards the inside. I would like to make the garage a little more comfortable for working in the winter and want to minimise moisture forming on the interior - I will be storing my car while I restore it and girlfriends motorbike.
A) Walls (DCBs)
It was suggested to me I batten (studwork?) and line the walls with DPM (to stop moisture ingress) and then place polystyrene next (insulation) and then final with plasterboard - however a dry-lining chap suggested that DPM was not the best move as moisture/condensation may form between the DPM and the blocks, dripping down and pooling at the base of wall. As an alternative he suggested using bitumen paint on the walls instead of the DPM to prevent moisture getting beyond the blocks.
B) Roof (pitched)
For the roof I have a breathable membrane (double roman tiles) and was going to simply use either polystyrene between the rafters (or perhaps rockwool roll may be easier to place, the rafters are 150mm deep) leaving 50mm gap between membrane and insulation for airflow (is airflow needed for A) Walls at all?).
I don't intend to paint or plaster over the plasterboard at all.
Not sure what thicknesspolystyrene will be useful.
The base will be concreted with a DPM underneath.
Walls are DCBs.
This 'sounds' reasonable to me, but i'm a complete novice so if anyone can see any problems or perhaps suggest alternatives they would be most welcome - I've read through a lot of threads and they have been helpful, but I like to try and put my situation forward individually.
Thanks.
c
I've finished all the structural work on my garage, just got some rendering to do to finalise the exterior and I am now looking towards the inside. I would like to make the garage a little more comfortable for working in the winter and want to minimise moisture forming on the interior - I will be storing my car while I restore it and girlfriends motorbike.
A) Walls (DCBs)
It was suggested to me I batten (studwork?) and line the walls with DPM (to stop moisture ingress) and then place polystyrene next (insulation) and then final with plasterboard - however a dry-lining chap suggested that DPM was not the best move as moisture/condensation may form between the DPM and the blocks, dripping down and pooling at the base of wall. As an alternative he suggested using bitumen paint on the walls instead of the DPM to prevent moisture getting beyond the blocks.
B) Roof (pitched)
For the roof I have a breathable membrane (double roman tiles) and was going to simply use either polystyrene between the rafters (or perhaps rockwool roll may be easier to place, the rafters are 150mm deep) leaving 50mm gap between membrane and insulation for airflow (is airflow needed for A) Walls at all?).
I don't intend to paint or plaster over the plasterboard at all.
Not sure what thicknesspolystyrene will be useful.
The base will be concreted with a DPM underneath.
Walls are DCBs.
This 'sounds' reasonable to me, but i'm a complete novice so if anyone can see any problems or perhaps suggest alternatives they would be most welcome - I've read through a lot of threads and they have been helpful, but I like to try and put my situation forward individually.
Thanks.
c