Hi all
We've recently moved into a new house where the previous owner built a fairly large (4m X 6m) concrete block shed/building but left it largely unfinished. When we viewed the house the walls were already up and the frame for the roof, he simply finished it with a felt roof and left it at that.
Since we've moved in, I've added a door and window to make it watertight..or so i thought.
We have driving rain along with water trickling down the walls from the flat roof which is seeping into the blocks.
The construction is: concrete base, 2 brick course of engineering bricks, damp proof membrane, single skin concrete block walls, timber roof frame and felt flat roof.
My intended use for the space is storage and home gym.
I have managed to get power in there (armoured cable back to fuse Board and a sep mk mini consumer unit in the outbuilding)
The blocks of course aren't waterproof and are only a single skin, I have purchased sika waterproof coating to coat the exterior with before a membrane is fitted and the walls clad.
The roof is also being replaced with an EPDM roof and the pitch raising as appropriate (a good friend is a roofer who fits these and he has agreed to help sort this)
My question to the forum is, what is the best course of action to insulate the inside? Ideally it would have been a double wall construction with a cavity but I don't think I can add an internal course of blocks around as they'd no doubt be resting on the inside of the concrete slab as opposed to on the foundation?
Do I batten and fill with celotex-type foam, or fibre insulation?
If using the above method, do I need to add any membranes between the wall and studs and again between the studs and plasterboard?
Or is there a 3rd option?
Many thanks
We've recently moved into a new house where the previous owner built a fairly large (4m X 6m) concrete block shed/building but left it largely unfinished. When we viewed the house the walls were already up and the frame for the roof, he simply finished it with a felt roof and left it at that.
Since we've moved in, I've added a door and window to make it watertight..or so i thought.
We have driving rain along with water trickling down the walls from the flat roof which is seeping into the blocks.
The construction is: concrete base, 2 brick course of engineering bricks, damp proof membrane, single skin concrete block walls, timber roof frame and felt flat roof.
My intended use for the space is storage and home gym.
I have managed to get power in there (armoured cable back to fuse Board and a sep mk mini consumer unit in the outbuilding)
The blocks of course aren't waterproof and are only a single skin, I have purchased sika waterproof coating to coat the exterior with before a membrane is fitted and the walls clad.
The roof is also being replaced with an EPDM roof and the pitch raising as appropriate (a good friend is a roofer who fits these and he has agreed to help sort this)
My question to the forum is, what is the best course of action to insulate the inside? Ideally it would have been a double wall construction with a cavity but I don't think I can add an internal course of blocks around as they'd no doubt be resting on the inside of the concrete slab as opposed to on the foundation?
Do I batten and fill with celotex-type foam, or fibre insulation?
If using the above method, do I need to add any membranes between the wall and studs and again between the studs and plasterboard?
Or is there a 3rd option?
Many thanks