Hi everyone,
Svenne living in Ireland who doesn't trust local craftsmen....
I want to insulate the attic in my house built in 2005. I will not convert the attic for living space but use it for storage, i.e., attic door/hatch with ladder is installed.
I have received quotes that seem to be okay, BUT there is a BIG difference in both quotes. Either the insulation (100mm) is sprayed directly on the moisture barrier and sheathing, creating a new waterproof layer and an airtight attic. OR you put up a spacer to create a ventilation channel between the spray insulation (200mm) and the slate roof.
Feedback on these different methods, please....
Svenne living in Ireland who doesn't trust local craftsmen....
I want to insulate the attic in my house built in 2005. I will not convert the attic for living space but use it for storage, i.e., attic door/hatch with ladder is installed.
I have received quotes that seem to be okay, BUT there is a BIG difference in both quotes. Either the insulation (100mm) is sprayed directly on the moisture barrier and sheathing, creating a new waterproof layer and an airtight attic. OR you put up a spacer to create a ventilation channel between the spray insulation (200mm) and the slate roof.
Feedback on these different methods, please....
It sounds like two completely different roofs...? One with raw planks (with moisture barrier fabric...?) and one with slate...?
Can you describe the current conditions?
I think that 200 mm is better than 100, we have about 400 mm insulation in the roof in the Stockholm area, and an air gap is always preferred (a requirement if you have wood materials, I would say).
What is a "kexdistans"?
Can you describe the current conditions?
I think that 200 mm is better than 100, we have about 400 mm insulation in the roof in the Stockholm area, and an air gap is always preferred (a requirement if you have wood materials, I would say).
What is a "kexdistans"?
Sorry for the slow response.... Year-end closing, etc. Attached are three images from the attic in question. Kexdistans is the distance when inserting "kex" that creates a space/air pocket between the existing roof and the spray insulation. Here on the island, they either spray directly on the black fabric in the images with 100 mm foam or create a kexdistans of 50 mm then spray 200 mm foam, but of course, it's much more expensive....
If I could choose, I would definitely go for air gap (kex) + PU foam. This way, the tongue and groove paneling gets ventilation on the underside, and the underside is protected from condensation, which I have experienced (expensive!)