how do i attach wood to cement?

Question

the cement is old its probly too hard for a cement gun.i dont want to drill holes for anchors because i dont have a Hilti.i got some good construction adhesive but i have no way to brace the wood against the cement while the adhesive sets.any thoughts?

i looked at liquid nail.....i didnt know it sets that fast though.

dave,cement gets harder the older it gets.using a powder gun will just chip the cement or blow a chunk out of it.i know anchors are the right way to do it,but they have a sample peice of wood glued to cement at the hardware store i went to and believe me,its on there good.the wood im using isnt heavy,but i have nothing to brace it against,its up high in the open air.

Answer 1

There are many techniques, and which one you use depends on the amount of load you are going to put onto the wood ad whether it is on a floor, wall, or ceiling.

Very light loads, adhesive is fine. Just watch out if there is any moisture coming through the concrete, it can make the adhesive lose grip on the concrete.

Medium loads, nailing from a Ramset gun is fine. This is usually where the load is sitting on the concrete or vertically on awall. Not so good when the load is hanging (e.g. from a ceiling).

Higher loads, or where it hangs from a ceiling, or any building framing, use an expandable bolt system. For this, you use a hammer drill to make a hole, insert the bolt housing into the hole, put the timber on top, and then the bolt through the timber into the housing. Screwing up the bolt expands the housing into the hole and locks it in place. Again, Ramset have a product for this.

If you are mounting build framing, or anything similar, onto floors or walls with earth on the other side, be sure to put a damp-proof coarse between the concrete and the wood. Otherwise moisture going through the contrete will affect the wood. DPC is like a tar paper and blocks moisture from going through. Hammer drills and other tools are available from hire outlets if you do not have them.

Answer 2

1

Answer 3

Wood Cement

Answer 4

Drill holes through the wood where you want to anchor it.

Stick a pencil through the hole, and clearly mark the cement.

Drill holes anyway into the cement. Yeah, it's not easy, but if you want it to stay, you gotta do it. Be sure to use a masonry bit, so you don't screw up a wood/metal bit.

Insert lead or plastic anchors or mollies, drive a screw or bolt through the hole into the anchor.

Another alternative is a masonry screw that doesn't need a mollie - it's made of a hardened steel. and the coarse threads grip the cement directly. The hole has to be correctly sized, of course, and you'll probably have to put the screws in with a socket wrench. I've used them in cement block, and they hold well. Ask for them at a decent hardware store or home improvement store.

Answer 5

Attach Wood To Brick

Answer 6

Use a caulking gun and liquid nail. If the wood isn't too heavy just hold it up against the cement for a little bit until it sets some. If possible brace it so it won't fall and once it gets set up some it won't pull away from the surface it is stuck to. It says on the tube, I think it is about 4 or 5 minutes it will be set up enough to stay.

Answer 7

you can rent a hilti or a powder gun at a rental yard.

you want to have it achored and not glued.
The older the cement the better, it doesnt get worse for shooting into, it cures for 28 years. It has much more chance to chip when it is new and uncured.

either way is good and allowed by code. The best way is to drill and sink an bolt, but the powder shot gun is good too.

never used glue on cement and wood, ever in my life.

Answer 8

Construction adhesive is good. If it's a horizontal surface just set some heavy books or blocks on the board till the adhesive is dry.(Overnight). If it's a vertical surface, try to place a couple of boards against the bonded board and jam them against a wall or solid surface. You might have to drag something heavy over to it to do that or maybe even nail the jam board to the floor temporarily.

Answer 9

You don't necessarily need a hilti to attach to concrete. I am an electrician and we use a standard hand drill/hammer drill and a masonry bit to drill holes in concrete and then use either a anchor screw (designed for masonry/concrete) or a combination epoxy adhesive/plastic insert with a set screw.

Answer 10

They sell metal anchors that fit over the end of the 4x4. you will need a masonary drill bit and some concrete anchors., any hardware store or home center should be able to fix you right up, just tell them what your trying to do. It's cheap also. Good luck!