Bricks, Masonry, Asphalt and Concrete - Sealing elevated parking slab for waterproofing

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PDA
MAS
06-11-07, 09:32 PM
Hi,

I'm wanting to apply a waterproof sealant to an elevated parking slab to allow for the construction of a room below. Currently when it rains, water will seep throught he slab & drip down below. I'm looking for a product that looks like concrete & won't peel like paint!

Here's a link to a picture to get a better idea:
http://i129.photobucket.com/albums/p219/mas421/ParkingSlab.jpg

Any ideas?

Mas

Concretemasonry
06-11-07, 09:50 PM
Where is the water coming from - throughthe concrete, around the concrete or through cracks?

You may be better off looking at sealing the top and edges.

Dick
MAS
06-11-07, 09:57 PM
Water is coming through a few hairline cracks in the slab...and around the edges. Check out the picture link I just added:
http://i129.photobucket.com/albums/p219/mas421/ParkingSlab.jpg

Last summer I added a densifier...don't know what good it did however.

Also, I'm in a freeze/thaw climate...and I just do not want any water penetration! The whole slab could crash down!

Thanks,

Mas

MAS
06-17-07, 04:22 PM
Any ideas??

Thanks,

Mas
Pecos
06-18-07, 04:45 AM
Concrete sealers are not waterproofers. They offer some water repellancy, and certainly slow down the water. They are more "water resistant" than waterproof. Good waterproofers are usually some type of thicker, elastic membrane or mastic. Have you googled concrete waterproofers to see what you can come up with?

Pecos
MAS
06-18-07, 11:13 PM
I have not googled yet...I'll give it a try.