Home>Discussions>INTERIORS>Living Areas & Workspaces>Question about white deposits on basement walls
3 posts / 0 new
Last post
flowwjoe
Question about white deposits on basement walls

We are planning on trying a "Behr" waterproofing paint made especially for basement walls (I don't remember the exact name of it). My question is the walls have already been painted and there is a white deposits around each cinder block (looks like maybe lime or calcium...almost looks like califlower). How do we remove these deposits before painting? Thanks

KCPumpkinStalker
Re: Question about white deposits on basement walls

If the walls weren't painted I would say with confidence to use Drylok Etch. Comes in a little plastic jar and can usually be found near the basement waterproofing paints such as the Behr you're looking at. You spray it on, let it sit and rinse it off. Some of the cauliflower stuff might require a steel brush. Open windows as it will get to your lungs.

BUT....not sure how this stuff works over painted surfaces so read the label and make sure it's ok.

Hank Bauer
Re: Question about white deposits on basement walls
flowwjoe wrote:

We are planning on trying a "Behr" waterproofing paint made especially for basement walls (I don't remember the exact name of it). My question is the walls have already been painted and there is a white deposits around each cinder block (looks like maybe lime or calcium...almost looks like califlower). How do we remove these deposits before painting? Thanks

Use vinegar scrub with a brush and rinse off with water.

Sponsored Stories

TV Listings

Find TV listings for This Old House and Ask This Old House in your area.