Bricks, Masonry, Asphalt and Concrete - Leveling a concrete floor under a sill
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angus99
10-25-09, 09:19 AM
Guys, I'm having a problem figuring out how to fill a gap where I plan to install a treated wood sill over an old concrete floor.
The sill would be about six feet long and I'll attach it to the floor with 3/8" redheads and construction adhesive. The problem is there's up to a 3/4" gap along the last foot of the sill where it will butt against an exterior door jamb
Otherwise, it makes solid contact with the concrete along the rest of it's length and is close to level. The door, itself, stands almost perfectly plumb.
I'm wondering if we could "shim" that gap with cement board, hold it all in place with the anchor bolts and construction adhesive and fill any remaining gaps with foam or self-leveling concrete?
I've been told that using self-leveling concrete to create new bed for the entire sill is not a good idea because it will crack if it gets wet and freezes. Any thoughts on this or products to recommend?
Thanks very much.
angus
The sill would be about six feet long and I'll attach it to the floor with 3/8" redheads and construction adhesive. The problem is there's up to a 3/4" gap along the last foot of the sill where it will butt against an exterior door jamb
Otherwise, it makes solid contact with the concrete along the rest of it's length and is close to level. The door, itself, stands almost perfectly plumb.
I'm wondering if we could "shim" that gap with cement board, hold it all in place with the anchor bolts and construction adhesive and fill any remaining gaps with foam or self-leveling concrete?
I've been told that using self-leveling concrete to create new bed for the entire sill is not a good idea because it will crack if it gets wet and freezes. Any thoughts on this or products to recommend?
Thanks very much.
angus