im installing a drop ceiling in a basement where i have 2 regular stud walls to work with but the other 2 walls are poured concrete. Anybody know the best way to do this?
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either shoot the wall angle onto the concrete as you would with any other application with a powder accuated tool or hang a main against the concrete walls and rivet the other two sides against the framed walls
Dave
Install strips of 3/4" plywood a few inches high to the walls with tapcons or powder actuated fasteners. Paint the bottom edge. Fasten the edging to the wood.
The bottom edge of the wood should be about 1/4" higher than the bottom edge of the track so it is not so obvious.
Commercial buildings do it this way all the time.
I agree. That's what I've done in similar situations. Actually used poplar, sanded the edge, set it flush, and painter caulked the little seam and painted it gloss white to match. You couldn't tell a difference without standing directly under it and staring at it.
If someone can shoot a powder actuated into that L channel on a concrete wall without destroying the L . . . more talent than I. "If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man." - Mark Twain
You could try attaching the wall angle to the concrete using a rotohammer and 1/4 inch nail ancors.
Use a nail for each stud. Use hardened nails for masonry. Construction adhesive might also be helpful for the concrete walls. If there's drywall over a wall, put a fence staple between each stud.
-T