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klycklama 02-08-2009 11:29 PM

Drilling into concrete walls
I am building a set of storage shelves and cabinets in my garage, however, the garage walls are concrete (not framed walls). The house is built on a hill so the garage (and conrete walls) are underground.

I am wanting to drill the supports for the shelves and cabinets into the concrete walls, however, I am nervous about drilling into the concrete because the outside of the walls are underground. I don't want to have any problems with water or moisture getting into the garage because of the drilling. I know the drill holes will not go all the way through the concrete, however, I just don't have any experience or personal knowledge as to if this will create problems.

Any advice anyone has on this would be helpful. This will be one of my first projects and I don't want to screw up my first home improvement project ever. Thanks for the help.

RippySkippy 02-09-2009 11:00 AM

How thick are your walls?

Assuming they're 6 to 8" drilling holes for anchors should not cause your walls to leak....unless you already have structural/moisture issues. Keep in mind you're not drilling through the wall...just into it.

concretemasonry 02-09-2009 12:28 PM

Three times (different homes), I built my garage open shelves without any drilling into the walls. They went across the back of a 2 car garage. In one case, built them so I could stick the front of the car under the lower shelf (and snow blower). I had the vertical spacing of the shelves at 18" or slightly more to allow larger boxes and plastic tubs to be used.

I put a treated 2x4 on the slab and flat against the wall(adhesive). Then I put 2x2s vertically on the 2x4s and glued them (to hold in place during building) to the wall.

For the center posts, I used 2x4s sitting on PT 2x4s or 2x2s turned the same way as the end wall 2x2s. Depending on the height and dimensions you can brace off the ceiling joist, but it was not necessary the thee times I did it.

For shelf supports, I used 2x4s attached to the wall 2x2s and on both sides of the center 2x4s (only about 4' deep shelves). The shelf supports were nailed to the wall 2x2s and I either nailed the center shelf supports to the 2x4 posts. Sitting on the 2x4 shelf supports, I placed 2x4s at 16" o.c. (12" o.c. where I had a longer span because of the wider post spacing to allow tfor the car width).

I used plywood for the shelving and it made everything so rigid, you could not shake it and no matter what I put on the shelves, there was no deflection.

The only place where I used pressure treated was where the wood was directly in contact with the concrete.

My friends accused me of using the shelving system to hold up the house and garage.

PaliBob 02-09-2009 12:35 PM

Sounds Great, Can you post a pic or two?

concretemasonry 02-09-2009 03:07 PM

I will try to find one to post.

I have moved around a bit and never saved too many pictures of shelves.

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