Attatching wood subfloor to concrete slab

Question

im putting in a glue down vynle floor over a concrete slab. Putting down half inch plywood.Attatching it to the floor I was going to use a nail shooting gun that uses a gun load to shoot the nail,Ithink it is called a ramset gun.Any better ways of doing this. what do ya think?

Answer 1

Use Liquid nail in addition to tap-cons. These are blue in color and for concrete. You have to drill a hole with the masonry bit that is provided with the screws. If you can get your hands on a cordless hammer-drill, it will make it easier. You drill the hole then run in the s***w.

Answer 2

go to a hardwear store and ask for "tap-con" screws it comes with a drill bit most of the time. the ramset sometimes just blows out the concrete. they come in many sizes .

Answer 3

you are asking for trouble here: a moisture pocket between the slab and the plywood. the concrete needs to be sealed first. your best bet is a 'loose-lay' of the vinyl held down with a perimeter baseboard or install it with perimeter glue. if you go with the plywood, make sure it is exterior grade and install a moisture barrier under it(tar paper or poly sheet). i really don't recommend it: the concrete is not going to be perfectly flat.

Hope that helps, good luck!

Answer 4

Construction adhesive (Liqiud Nails).

Answer 5

the ramset is your best option here