Member
· Norrbotten
· 3 390 posts
No, it is usually a rubber gasket or sillpapp (a special asphalt paper). A plastic film is likely to break if there are any irregularities.
It's not just about preventing moisture migration from the concrete to the sill (which a 0.2 film would do if it's intact), it's also about sealing the gap between the concrete and the sill, which a 0.2 film does not do.
That is T-emballage's ST-list, which I have been led to believe is intended for sealing and moisture protection of the sill, including the outer wall sill. Unfortunately, I can't find much information about it on the T-emb website. In the environmental product declaration, sealing between the foundation and sill is stated as the intended use, but it does not explicitly mention the outer wall sill.
When you buy a product from one of these large building product manufacturers and use it according to their instructions and intended uses, it is generally "approved." If you want to further ensure this, it's advisable to make a quick phone call to T-emballage and check if they recommend it for the outer wall sill, then it's green from that perspective. You can also take the opportunity to ask if it is CE marked or meets any other standard that makes it approved according to BBR or BKR.
That was if it is approved from a legal and insurance perspective. The next question to ask is whether you personally find it suitable. I think this particular sill sealing seems a bit clever, but I would be concerned about holes in the foil. I wouldn't use it unless I had a relatively smooth and nice substrate on the concrete slab, and I would also sweep it off thoroughly beforehand.
Personally, I have used sill foam, the type that resembles a sleeping pad. I think it feels safe, provides good wind protection, offers some insulation, and distributes the wall pressure well across the entire sill surface. I don't really feel the need for any other product.
When you buy a product from one of these large building product manufacturers and use it according to their instructions and intended uses, it is generally "approved." If you want to further ensure this, it's advisable to make a quick phone call to T-emballage and check if they recommend it for the outer wall sill, then it's green from that perspective. You can also take the opportunity to ask if it is CE marked or meets any other standard that makes it approved according to BBR or BKR.
That was if it is approved from a legal and insurance perspective. The next question to ask is whether you personally find it suitable. I think this particular sill sealing seems a bit clever, but I would be concerned about holes in the foil. I wouldn't use it unless I had a relatively smooth and nice substrate on the concrete slab, and I would also sweep it off thoroughly beforehand.
Personally, I have used sill foam, the type that resembles a sleeping pad. I think it feels safe, provides good wind protection, offers some insulation, and distributes the wall pressure well across the entire sill surface. I don't really feel the need for any other product.