Repairing crumbling brownstone under stoop

My tenant stores his bike in the area under our stoop. The underneath of the steps were painted about 10 years ago with cementitious paint. It’s holding up okay mostly — but crumbling badly right over the bike. How do I repair this? Just scrape away the soft material and repaint? Any tips, folks?

NeoGrec

in General Discussion 5 years and 1 month ago

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JohnHancock | 5 years and 1 month ago

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It will stop crumbling if you can prevent water from coming in, you may need to seal the gaps in the steps

NeoGrec | 5 years and 1 month ago

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That sounds quite likely, Maggie. I can scrape away the deteriorated area and don’t need to repaint. But I’d like to stop the crumbling and am not sure how to do that.

Guest User | 5 years and 1 month ago

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definitely start with scraping away what’s loose but the repair might need to depend on what you find underneath. cementitious paint is not great for brownstone so it might be that you’re getting water through the steps that’s able to sit on the cementitious paint and then deteriorate the underside of the actual brownstone steps. when the paint is peeling away is it taking the stone with it?