I have an entire wall in my basement that is cinderblock that I want to paint (dark ish green, think slightly lighter forest green). It has a layer of white paint, but there are still lots of small pitting and cracks visible. I thought it would look better if I smoothed it out, so I am trying to fill in the cracks. I bought a tube of siliconized concrete filler & sealant that I have started to fill in some of the cracks with, but this wall is huge and I realize it’s going to take forever doing one small spot at a time like this. Is there a better method to do this?

Edit: thanks for the advice everyone. I am looking in to using blockfill for the wall

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usedTP t1_it174b5 wrote on October 20, 2022 at 4:41 AM

Painters who build schools use a sprayer and a paint or primer they call block-fill.

Nya7 OP t1_it2kr4p wrote on October 20, 2022 at 2:05 PM

Can you apply block filler without spraying it? Im scared of the overspray getting everywhere as the basement is finished

iambluest t1_it05w2h wrote on October 19, 2022 at 11:40 PM

Consider parging the wall. Then paint with high-hide primer or follow better adviser.

I don't know if this would work if there is moisture.

JRV3000 t1_it122sp wrote on October 20, 2022 at 3:51 AM

As a stucco contractor this is the way. Did a 3000 sq ft wall this week with a thin coat of stucco, then water troweled it. Won't be perfectly smooth, but will be smoother than the cinder block

Nya7 OP t1_it093oz wrote on October 20, 2022 at 12:05 AM

Do people parge interior walls? It seems like its mostly done to exterior

iambluest t1_it4l4gi wrote on October 20, 2022 at 9:57 PM

Yes. they do

DisastrousSyllabub6 t1_it1bjy0 wrote on October 20, 2022 at 5:32 AM

Block fill is what you need.

usedTP t1_it27ao0 wrote on October 20, 2022 at 12:22 PM

Painters who build schools use a sprayer and a paint or primer they call block-fill.

Nya7 OP t1_it2krpm wrote on October 20, 2022 at 2:05 PM

Can you apply block filler without spraying it? Im scared of the overspray getting everywhere as the basement is finished

usedTP t1_it2lis4 wrote on October 20, 2022 at 2:11 PM

That I don't know. The spraying part seems important to getting into the recesses.

Nya7 OP t1_it2lodr wrote on October 20, 2022 at 2:12 PM

Makes sense

sfdragonboy t1_it0jz63 wrote on October 20, 2022 at 1:27 AM

Just use a tray and use that wet tape compound for plastering/taping drywall and use a good sized plastering tool so that you can cover a lot of sq ft at a time.