Ok, I think I'll give up on carpet, thinking now about painting the
floor and 3 coats of urethane over that. So my question is do I need
to etch the concrete first. I seen a place say if the PH is 6-7 I
would not need to. Does it have to be etched even if it not in that
range? I will order a test kit to check but if it needs etched
painting is also out as I can not put that much water down that
etching requires. Then i guess i'll go to the laminate wood floor, it
seems like nothing is really good to put down a floor on concrete.
Etching will not change the Ph of the concrete. It is supposed to eat into
the surface to remove the surface gloss and/or smoothness to provide a
porous surface for the paint to adhere to. Only certain materials can go
directly onto a basement (below ground) concrete floor. MDF backed laminates
are also a bad idea as it will absorb any moisture. The best I have found is
commercial grade plastic or asphalt backed carpet tiles. They don't absorb
moisture and if they get wet, just pull them up and dry them out, then
re-install. Plus they are reasonable in price, easy to install and wear like
no other carpets.
I have had about 30 cardboard boxes full of stuff on the basement
floor for about 4 years they are as dry as the day they were first
placed. I know they put what looked like plastic down over the gravel
before pouring the basement floor will that help keeping what ever I
put down? I had also did the tape plastic and it too stayed dry.
Don't even think of using any product not specifically designed for below
grade concrete application. Even then be sure to buy the best possible
product and prep very carefully following every instruction and warring
provided by the manufacturer or the finish and prep materials.
Usually that is true, but it does not tend to stay that way. Weeks or
months later it can become a real mess. "Just washing" is seldom enough.
It usually calls for an acid etching.
I might add that even with the best prep, many people have had problems
with these products. Mine has been down in my garage for a number of years
now and still going great. However I did buy a top two part epoxy product.
I would be hesitant to use it on a basement floor, unless I was ready to
put down a new floor that did not require adhesion to the existing floor if
the paint failed. Frankly if I wanted the basement for a living area, I
would put down a different floor to start with.
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