Masonry Sealant

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09-20-14, 11:08 AM

Nintzk

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Masonry Sealant

Can anyone please advise on a masonry sealant. I see a lot of different products online. I have used thoroseal before and I am considering it here, but I was wondering if anyone has any other suggestions. I see that there are a number of products which are acrylic based as opposed to concrete-based. For example, Behr has a "Concrete & Masonry Waterproofer." When is one more advisable than another. My end goal is to simply cover a few cinder block walls. I'm primarily doing this to make the walls look nicer (so even if I use the thoroseal I will probably paint it), but I do think the walls are letting water into my basement as well, so I figured I might as well seal it. Any suggestions or warnings are appreciated. Thanks.

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09-20-14, 01:02 PM

marksr

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Are these block currently uncoated?

Raw block needs to be primed with block fill prior to applying paint, when the block are below grade Drylok or similar is used. I'm not familiar with Behr's concrete and masonry sealer but if it's a thin sealer it's not appropriate for raw block [won't fill the pores]

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09-20-14, 01:12 PM

Nintzk

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Marksr,

Thanks for the quick response. Yes, the blocks are currently uncoated and the blocks are all above grade. With this information is there a product you think would work best?

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09-20-14, 01:41 PM

marksr

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To paint above ground block I've always applied 1 coat of block fill and then whatever was spec'd for the top coat.

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09-22-14, 02:06 AM

stadry

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imo, thoroseal is a much better product than those mentioned,,, we also like sika,,, however, if you consider the apron/vest store the answer to great supplies & materials, don't anticipate pro results - again, imo

btw, many can be tinted using sher-wms wtr OR solvent tints

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Bricks, Masonry, Cinder Block, Paving & Walking Stones, Asphalt and Concrete
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kdrymer on Sep 20, 2014

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