Not sure where to put this. Block building paint question

[poorboy87]

Mods can move this if it's in the wrong area.
I've got an old block building that wicks moisture in really bad.
Is there something I could paint it with? I've seen basement paint that is for moisture control but I'm not sure. Should I do both sides inside and out?

Outside wall

Inside wall


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[theoldwizard1]

First, let the block dry out. No paint will stick to something damp.

Get a primer that is specifically for masonry/block. The first coat is the worst, trying to work paint into all of the pores. A good airless sprayer works well for this or roll with a long nap roller. Use a brush where necessary to force paint into all the little nooks.

Finish coat can be any good quality paint. Don't do the inside until a couple of weeks after the exterior.

 

[poorboy87]

Should I worry about it holding the moisture in the block with paint on both sides


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[kwfloors]

Do a Vortex sprayliner on it. It will seal it good, any color you want.

 

[LegacyIndustrial]

First, let the block dry out. No paint will stick to something damp.

Get a primer that is specifically for masonry/block. The first coat is the worst, trying to work paint into all of the pores. A good airless sprayer works well for this or roll with a long nap roller. Use a brush where necessary to force paint into all the little nooks.

Finish coat can be any good quality paint. Don't do the inside until a couple of weeks after the exterior.

Right on. I believe they call the first coat "block filler".


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[SunsetsAndFriends]

poorboy87 - and please post some pictures of your project.

 

[Zippercat]

Check out this primer from SW:

http://www.sherwin-williams.com/homeowners/products/catalog/loxon_concrete_masonry_primer/

It's not cheap. It's thick and takes some work to roll or brush out. But like the reviews say, I found it to be the best masonry primer I ever used. If you want to do the job right and once, this is the stuff.

 

[poorboy87]

Ill post up in the gallery before too long. Still gathering stuff for the wiring.
I'll check that primer out.
Think I should pressure wash the outside first?
Thanks for the info guys!

 

[theoldwizard1]

Ill post up in the gallery before too long. Still gathering stuff for the wiring.
I'll check that primer out.
Think I should pressure wash the outside first?

It wouldn't hurt, but that will add a couple of days of drying before you can start priming.