ᐅ Sealing the vapor retarder tightly: Are there alternative solutions?
Created on: 16 Apr 2016 10:11
K
kanickhello
I am currently working on the insulation between the rafters of my roof. At the moment, I am doing the two side attic spaces. There will be two layers of 100mm (4 inches) Homatherm insulation under the roof, followed by a vapor retarder foil. On top of that, cross battens with 22mm (just under 1 inch) insulation, then a wooden lathing.
When I want to connect the vapor retarder foil at the sides, I attach it to the straight beams using Orcon-F sealing adhesive. However, there are also areas where this is not so simple, as shown in the photo.
On the left is a timber frame wall constructed using a post-and-beam method (an internal wall, not insulated, about 50mm (2 inches) thick). Below are floorboards around 30mm (1¼ inches) thick. On the right, it’s straightforward since the foil can just continue along.
Should I simply fill all the gaps here (up to 12mm (½ inch), or even larger in the joints between the timber beams) using a cartridge sealant, or is there a better solution?
By the way, the new timber frame is just the side closure for the wood wool insulation.
Many thanks and best regards,
Nick
I am currently working on the insulation between the rafters of my roof. At the moment, I am doing the two side attic spaces. There will be two layers of 100mm (4 inches) Homatherm insulation under the roof, followed by a vapor retarder foil. On top of that, cross battens with 22mm (just under 1 inch) insulation, then a wooden lathing.
When I want to connect the vapor retarder foil at the sides, I attach it to the straight beams using Orcon-F sealing adhesive. However, there are also areas where this is not so simple, as shown in the photo.
On the left is a timber frame wall constructed using a post-and-beam method (an internal wall, not insulated, about 50mm (2 inches) thick). Below are floorboards around 30mm (1¼ inches) thick. On the right, it’s straightforward since the foil can just continue along.
Should I simply fill all the gaps here (up to 12mm (½ inch), or even larger in the joints between the timber beams) using a cartridge sealant, or is there a better solution?
By the way, the new timber frame is just the side closure for the wood wool insulation.
Many thanks and best regards,
Nick