ᐅ Sealing the Base of the Exterior Wall Around Floor-to-Ceiling Windows
Created on: 3 Feb 2016 13:08
D
DenNerd
Hello everyone,
As part of this year’s construction work on our outdoor area, I need to connect the waterproofing under our floor-to-ceiling windows with the dimpled membrane used for the basement insulation, in order to ensure a proper seal.
Attached are a few photos of the situation. The window installers previously connected the rubber flaps extending from the window to the dimpled membrane using Sikkaflex (but only on the south side of the house and not very neatly done). However, I had to cut these open again because my father-in-law used expanding foam to fill small gaps in the basement insulation and was a bit overzealous in some areas.
Now my question is: what’s the best way to reseal this? Should I use Sikkaflex again, and if so, which product? A roofer suggested liquid rubber coating, but again, which product? Or should I use something else entirely? What are your recommendations?
Thanks and best regards
As part of this year’s construction work on our outdoor area, I need to connect the waterproofing under our floor-to-ceiling windows with the dimpled membrane used for the basement insulation, in order to ensure a proper seal.
Attached are a few photos of the situation. The window installers previously connected the rubber flaps extending from the window to the dimpled membrane using Sikkaflex (but only on the south side of the house and not very neatly done). However, I had to cut these open again because my father-in-law used expanding foam to fill small gaps in the basement insulation and was a bit overzealous in some areas.
Now my question is: what’s the best way to reseal this? Should I use Sikkaflex again, and if so, which product? A roofer suggested liquid rubber coating, but again, which product? Or should I use something else entirely? What are your recommendations?
Thanks and best regards
S
Sebastian798 Feb 2016 07:13No, that doesn’t make sense – adding an additional dimpled membrane.
S
Sebastian798 Feb 2016 08:15This is what the EPDM membrane does here.
So is that actually the problem? The EPDM membrane is exposed and could be damaged by the gravel, which could lead to leaks? Therefore, should it be placed underneath the dimpled membrane if anything?
Attaching it to the wall seems rather difficult right now since everything is already glued. On the other hand, I wonder what difference it makes whether the membrane is glued to the masonry underneath the insulation or if it lies on top and is sealed there? In both cases, the sealing of the timber frame should be ensured, right?
Attaching it to the wall seems rather difficult right now since everything is already glued. On the other hand, I wonder what difference it makes whether the membrane is glued to the masonry underneath the insulation or if it lies on top and is sealed there? In both cases, the sealing of the timber frame should be ensured, right?
S
Sebastian799 Feb 2016 21:33However, the insulation itself can be bypassed...
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