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7 replies
2k views
7 replies
Attaching a wooden stud (sill) to indoor mortar?
In the basement, I have constructed a 90mm leca layer as a base for an interior wall where the laundry room will be. The purpose is to maintain completely inorganic material up to the waterproofing height, and I will now build wooden walls on top of my small wall.
I want to avoid nail-plugging into the leca with the risk that the narrow row will crack, and I am now considering if it is possible to place a sill in wet mortar on top of the wall row.
Generally, it's a no-no to cast/mortar in wood, but this is a dry, ventilated environment, and I find it hard to see what the downside would be.
Thoughts?
I want to avoid nail-plugging into the leca with the risk that the narrow row will crack, and I am now considering if it is possible to place a sill in wet mortar on top of the wall row.
Generally, it's a no-no to cast/mortar in wood, but this is a dry, ventilated environment, and I find it hard to see what the downside would be.
Thoughts?
Yes, it can be.
Is there any risk of cracking a 90mm leca if drilling from above with a hammer drill?
It would have been smart of me to drill before I laid the bricks so I could discard any damaged blocks, but too late now.
Is there any risk of cracking a 90mm leca if drilling from above with a hammer drill?
It would have been smart of me to drill before I laid the bricks so I could discard any damaged blocks, but too late now.
Would of course be grateful for more feedback on the original question. 
Leca is porous. Just go gently and carefully, and I would be surprised if you manage to crack it. Don't forget the sill paper.D David_Berglund said:
Construction veteran
· Norrland
· 342 posts
Can't you glue a steel rail with something like PL800 or equivalent? I don't think the mortar sticks very well to a polished steel rail. You'll probably just need to make sure to vacuum thoroughly so the leca is dust-free for the glue to grip.
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