Lots of cold air coming through a variable narrow – about 1-2 cm (0.5 in) – gap between a wooden beam and the concrete wall in the basement (image 1 below).
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What can I fill it with? Worried about moisture collecting and eventually ruining the beam.
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Noticed that on another beam a similar spot was treated with something (picture 2); there is even a solidified translucent amber-like drop clearly visible on the picture. What can this material be?
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Right next to it there's aluminum ducting going into the same wall treated with expanding foam; there is a layer of wood on top of the wall so concrete itself is not visible (picture 3). Can I just fill the gap with similar stuff?
Best Answer
The amber stuff looks like construction adhesive. Particularly Liquid Nails.
If the void is not load bearing and protected from moisture, then you can fill it with just about anything. The foam filler is a good choice since it's easy to use