Thursday, February 11, 2010

Do I need to scrape old peeling paint off of concrete walls if i am repainting them?

I really want to repaint my basement but i was wondering if i actually have to peel the old paint off? the walls are concrete so i thought i should ask. Sugestions welcome, thanks!!Do I need to scrape old peeling paint off of concrete walls if i am repainting them?
You don't have to scrape all the paint off. take a wire brush and scrape off any loose paint. Then prime the areas you scraped. Use a oil based primer. Just pay attention to whether the concrete was painted with latex or oil. If oil then new paint should be oil. If latex, then redo with latex.





If it is smooth concrete, roll out with 1/2 inch nap lambs wool roller cover. If its rough concrete then use 1 inch nap roller lambs wool cover.Do I need to scrape old peeling paint off of concrete walls if i am repainting them?
Any time there is loose paint, it needs to be scraped before repainting. Otherwise the new paint will peel right off with the old paint. You will probably want to prime the wall as well, to seal the concrete and allow the new paint to adhere. Hope this helps.
The old paint will continue to peel off, taking your new paint with it. The new paint will not fix the problem. Since it is indoors, I would suggest putty knives and wires brushes to remove as much of the old paint as possible.

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