Good evening!
We have also torn up the floor in the living room and dining room now, to re-insulate and have removed cast-in nail battens. In total, it's about 38-40 square meters. In the future, we might want to have a fan along the other side of the house, to get circulation on the slab. We don't know if or when we'll do it, but of course we want to prepare for it to be on the safe side. Think budget-level. Does anyone have a good suggestion for suitable sealing? It's concerning the area between the existing drywall and the sill. Plus, it would be great if it's mouse-proof... It's quite tight to access, and in about 1/3 it's VERY difficult to reach.
I have considered that foam sealant is really convenient, but people also raise a warning that it absorbs and can transmit moisture a lot. I don't want a wet mass lying on the sill. Alternatively, nail beadings to cover the gap, then something like vapor-tight tape over it... But it becomes really difficult to nail the beadings in the tightest areas (10-15 meters which will be tricky). Expanding sealing strip?
Anyone with a bright idea?
Foam sealant might work? After all, it's used for windows and doors, where it can easily get damp...
Regards
We have also torn up the floor in the living room and dining room now, to re-insulate and have removed cast-in nail battens. In total, it's about 38-40 square meters. In the future, we might want to have a fan along the other side of the house, to get circulation on the slab. We don't know if or when we'll do it, but of course we want to prepare for it to be on the safe side. Think budget-level. Does anyone have a good suggestion for suitable sealing? It's concerning the area between the existing drywall and the sill. Plus, it would be great if it's mouse-proof... It's quite tight to access, and in about 1/3 it's VERY difficult to reach.
I have considered that foam sealant is really convenient, but people also raise a warning that it absorbs and can transmit moisture a lot. I don't want a wet mass lying on the sill. Alternatively, nail beadings to cover the gap, then something like vapor-tight tape over it... But it becomes really difficult to nail the beadings in the tightest areas (10-15 meters which will be tricky). Expanding sealing strip?
Anyone with a bright idea?
Foam sealant might work? After all, it's used for windows and doors, where it can easily get damp...Regards
Hey
How did it go with this? I'm doing the same now with my house (room by room) and I want to prepare to be able to mechanically ventilate the slab.
Before I nail the floor back here, I was thinking of directing the exhaust with flexible hose and pipes 20-50mm but also want to seal the outer wall sill with some form of "draft protection."
Do you have any nice pictures of how you did it?
How did it go with this? I'm doing the same now with my house (room by room) and I want to prepare to be able to mechanically ventilate the slab.
Before I nail the floor back here, I was thinking of directing the exhaust with flexible hose and pipes 20-50mm but also want to seal the outer wall sill with some form of "draft protection."
Do you have any nice pictures of how you did it?
Unfortunately, no picture. Used sitko flex / etab vapor barrier tape, where the largest gaps were also built up with various fitting scrap wood. It definitely did not become airtight... But no large holes anymore at least. I haven't felt the need yet to ventilate the slab, but the day I might wish to, I hope the function will be adequate.V Victor Paju said:
Hmmm I don't think it should be airtight if you're not running the vent simultaneously... you're trapping moisture and it can't go anywhere... it comes from underneath with these uninsulated slabs (which I have)S StorBagaren said:
But thanks for the reply! I have Etab tape so I might just use that all around for a bit of vapor barrier and zone when the exhaust air is activated.
I ordered a fan that will run at 25% at the start and then will go between 40-60% (when the flooring in the kitchen is eventually broken).
We'll see in about 5-10 years if we did it right! But I have a thought that the floor might get a degree warmer since you're pulling indoor air into the gap and then out of the house...