Latest Discussions : Miscellaneous


05:16AM | 10/10/04
Member Since: 10/09/04
1 lifetime posts
Can I apply stucco over painted cinderblock or do I need to remove the old paint first. Also I heard their might be concrete adhesive that could go over the painted wall. Any info?

Glenn Good

05:40PM | 10/12/04
Member Since: 09/10/03
314 lifetime posts
Are you planning on using a synthetic stucco or cement based?

This bonding agent should work well for cement based stucco providing the surface is sound and the paint is not peeling or blistering:

It may work for synthetic stucco as well but there are several brands and their formulas are different. I would recommend you contact the manufacturer first to be certain. They may suggest using Plaster Weld instead (also made by Larson).

Another method that has been time proven and will not delaminate is to install self-furring plaster lath over the wall first. Use stainless steel or hot dipped galvanized fasteners to secure the lath.

Using lath will also help prevent any cracks in the block wall from being transmitted through the plaster.


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04:50AM | 01/09/05
Member Since: 01/05/05
83 lifetime posts
He is right but if you want an even better job. Put a moistier barrier on the wall first. It will help and you won't be able to see the blocks!! And does it have a cap on it to keep the water out?


09:54AM | 10/25/17
"if you want an even better job. Put a moistier barrier on the wall first"

Never add a moisture barrier UNLESS you know what you are doing. Moisture barriers are installed at build in accordance with 'warm side/cold side rules". If there is already a moisture barrier say on the inside walls and you add one on the outside wall you will get condensation between them.
The problem with that is obvious and if there is wood inside you will only have a few years before the wall is structurally degraded.

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