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Covering Concrete?

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homer

Well-known member
Aug 18, 2001
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Hello Masonary Types!

Just a quick question please? I have an older stucco home, and the bottom 3 feet is bare concrete. It's looking a bit tired. Is there something I can "paint" it with to freshen it up? I'm thinking about something I saw advertised a while ago, it was rolled onto concrete steps, floors etc. Any ideas would be great, and price is definitely an object! Thanks


Homer
 
There is special paint for concrete but I'll leave that to the experts. There's also some kind of paint that dries super hard and is as strong or stronger than the concrete it's covering.

My question is, does sealing concrete create problems with moisture being able to breathe through it? i.e., are you trapping moisture within the wall/floor?
 
homer said:
Hello Masonary Types!

Just a quick question please? I have an older stucco home, and the bottom 3 feet is bare concrete. It's looking a bit tired. Is there something I can "paint" it with to freshen it up? I'm thinking about something I saw advertised a while ago, it was rolled onto concrete steps, floors etc. Any ideas would be great, and price is definitely an object! Thanks


Homer
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I think concrete at the bottom of the wall above the foundation or grade level is required by code to be covered in parging... a type of concrete coating.
Call your local building codes people to find out whats required.
 
Keebler Elf said:
There is special paint for concrete but I'll leave that to the experts. There's also some kind of paint that dries super hard and is as strong or stronger than the concrete it's covering.

My question is, does sealing concrete create problems with moisture being able to breathe through it? i.e., are you trapping moisture within the wall/floor?
Click to expand...

Only if there is moisture behind the concrete - for example a retaining wall where the back of the retaining wall has not been waterproofed.
 
So what is behind the concrete? A heated space that has no insulation or vapour barrier? Or a finished, vapour barriered wall? Or an unheated, ventilated crawlspace?

Just about any paint'll stick, for awhile, but when the entire surface is sealed tight and moisture's trying to get out, the paint will likely peel away in patches.

You likely saw the Home Hardware commercial for their textured concrete paint. But I don't recall any applications like a basement wall where the inside might be unfinished.
 
The easiest and leasty expensive is parging buy it buy hthe bag at your local big box hardware store, mix it according to directions and apply either with a brush, ( available at the same store) or with a trowel. Follow the instructions or it will pop right off in no time. You can tint it if you wish, again deyes are available at the store.

The roll on products may not work on a verticle surface, most of these things are very tightly engineered, they are designed for a specific purpose and do not work properly in other applications.

Be carefu; not to get the parge on the stucco it will not come off, or rather it will but it will take the stucco off with it.
 
as a contractor I agree with landscaper.......if you are handy you can easily do it yourself.....

Best bet is also dig down a bit (6") and parge down below the dirt level.....that way as the dirt moves you will not see the edge of th parging.

It also helps if you are able to install the wire mesh...silver stuff.....fasten it to the wall with concrete nails or conrete screws....

I would also use a bonding agent...looks like milk to help bond it to the wall....

last point....just before it really dries...tale a pices of blue foam...about trowel size and rub it oover the parging in gentler circles....will smooth it out
 
What about garage floors that are starting to fail, is there any way to rejuvinate them?
 
nottyboi said:
What about garage floors that are starting to fail, is there any way to rejuvinate them?
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No.

Your floor is probably suffering the effects of freeze thaw damage due to the original builder using shitty concrete (low strength, high water to cement ratio, and non air entrained)

Smash it up, install 15 M rebar at 400 mm centres in both directions (not mesh), supply and install 6" of 35 MPA concrete with a 80 mm slump with a water / cement ratio of 0.41, air entrained to 7%. Once the concrete has set up, saw cut control joints 2" deep (ensure you place the rebar at 3" down), and then water cure it for 7 days ensuring that the water you apply is plus or minus 15 degrees C from the temperature of the concrete slab. If you just spray cold water on from a hose, you'll crack your new concrete due to thermal shock.
 
nottyboi said:
What about garage floors that are starting to fail, is there any way to rejuvinate them?
Click to expand...

There is no easy way to rejuvenate the flaking of the concrete. The best way to treat it is, high pressure wash the area and remove as much flaking of the concrete as possible. Acid wash the area with muriatic acid, use a bonding agent and try self leveling concrete. This is extremely liquid and let run to level out the area. If this doesn't work, then smash and crash the area and make sure you tell the concrete plant you're pouring a floor and need air in the mix. You can also add mesh to concrete to increase strength.

Good Luck
 
i don't know what type of concrete is it. if it's outdoors, seal it, indoors, epoxy is the best way to cover concrete. i'm in the epoxy business and the cost of coating concrete with epoxy is pretty steep but if you wanna do it yourself, it will be way cheaper. it is actually easy to do but of course pros do it better. just think either it's your hand or an MPA's hand.
 
Gator3x said:
There is no easy way to rejuvenate the flaking of the concrete. The best way to treat it is, high pressure wash the area and remove as much flaking of the concrete as possible. Acid wash the area with muriatic acid, use a bonding agent and try self leveling concrete. This is extremely liquid and let run to level out the area. If this doesn't work, then smash and crash the area and make sure you tell the concrete plant you're pouring a floor and need air in the mix. You can also add mesh to concrete to increase strength.

Good Luck
Click to expand...

nope, flaking concrete + water = bad. if it's flaking, sand it, then apply two coats of epoxy. that would do the trick. i did a 3 door garage 3 years ago with really bad concrete on it. the customer has given me like 5 referrals now.
 
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