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Old 03-23-2013, 05:04 PM   #1
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Paint basement cinder block walls.


We are looking at painting our basement walls to give it a semi finished look. Do I need to use a special type of primer? What nap roller is recommended too?

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Old 03-23-2013, 05:22 PM   #2
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Paint basement cinder block walls.


May want to stop by your local real paint store and take there suggestions.
And no any box store and Wal-Mart do not count as real box stores.
The biggest thing will be the required prep work.
Mold, effevesants, dirt and dust need to be treated first.
http://www.sherwin-williams.com/home...ement-how-tos/

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Old 03-23-2013, 06:08 PM   #3
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Paint basement cinder block walls.


Block filler primer and a 3/4 or 1 inch cover, and some muscles.
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Old 03-23-2013, 06:37 PM   #4
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Paint basement cinder block walls.


If they haven't been painted previously follow JSheridan's plan of attack. Block filler and paint will give you nice looking walls. If you do have SLIGHT moisture issues, you may want to coat the walls with UGL Drylock. It's not an effective deterrent at keeping out heavy moisture, but, it will keep minor moisture away from your interior. You can leave it white or topcoat it with a paint color of your choice.
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Old 03-23-2013, 08:07 PM   #5
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Paint basement cinder block walls.


So after the block filler do I use standard latex paint?
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Old 03-23-2013, 10:06 PM   #6
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Paint basement cinder block walls.


Yes. to the finish. A nod to my friend Gymschu, I didn't think of the moisture. Do you have any moisture issues? Efflorescence, or a salty like powder deposit on the surface of the block, will indicate excess moisture transfer.
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Old 03-23-2013, 10:59 PM   #7
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Paint basement cinder block walls.


Yeah a little salty finish. So I need waterproof primer then?
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Old 03-23-2013, 11:14 PM   #8
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Paint basement cinder block walls.


To what extent? All walls, one wall, major areas, a few spots here and there?
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Old 03-23-2013, 11:19 PM   #9
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Paint basement cinder block walls.


Few spots on one wall. I think it's from the front steps on our house.i need to recaulk around the steps for the siding and from the steps to the block once its finally warm.
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Old 03-23-2013, 11:30 PM   #10
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Paint basement cinder block walls.


I would suggest using Thoroseal, a cement based coating that becomes part of the block wall and can also fill the martar joints, depending the the consistency (pancake batter consistency or thinner). A second coat can be applied within a day or so. It is work to mix, following the instructions for timing of final water and mixing. It is far superior to a "paint-type" coatings like Dry Block or fillers and is used as durable, compatible base for concrete ranging from restoration of statues to concrete repairs on concrete bridge piers and dams.

It is usually not thought of as "waterproofer" but it has great moisture control (to the extent of "waterproofing", but not claimed and can be difficult to find in big box stores, but it comes in 2 colors - gray and white. - Mixing the powder must be done properly.

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Old 03-25-2013, 05:51 PM   #11
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Paint basement cinder block walls.


So this is better than drylok? I don't see any water in my basement. I just had maybe two small patches of salty spots on the block wall.
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Old 03-25-2013, 06:28 PM   #12
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Paint basement cinder block walls.


Bryan, if you have no moisture issues, or very minor ones, there's no need for the Drylock. I would simply wire brush or scrape off any of those spots you talked about and apply two coats of latex.
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Old 03-25-2013, 07:32 PM   #13
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Paint basement cinder block walls.


If this is just on the outside wall what about the moisture control then furring strips to allow a little air movement then green board
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Old 03-25-2013, 07:45 PM   #14
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Paint basement cinder block walls.


I just want to paint to conserve space and money.

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