I live in an area where the houses are built entirely of cement blocks including interior walls. From what I can tell the cement blocks are covered in a very smooth coat of cement applied like plaster. Then it seems they just paint over that. Many homes here have problems with the paint peeling off the wall especially near the floor boards. I assume it is a moisture issue.
There must be something that can or should go on the cement prior to paint. Some type of water proof primer? Any painters know?
2007-10-25 10:52:38 · 3 answers · asked by ~~∞§arah T∞©~~ 6 in Home & Garden ➔ Maintenance & Repairs
Hi, and you are correct, it is moisture that is causing the problem. Get an exterior oil based primer,and use that before painting. That will stop the peeling. Byee Oh, if you are going to put on a waterproof sealer first,be careful as some products take up to 45 days to cure,and you can't prime until the sealer is 100% cured. Just to let you know. Byee again
2007-10-25 12:05:12 · answer #1 · answered by Sandyspacecase 7 · 3⤊ 0⤋
It sounds like a water-based paint (latex, acrylic, etc.) has been utilized over an present oil-based product. it rather is conceivable that the exterior became sleek on the time it became painted (strike 2). the guideline of thumb for portray is that the exterior desires to be clean, uninteresting, dry, and in sound subject. My suggestion is to thoroughly do away with the precise layer of paint via sanding and scraping. i'd be careful and positioned on an approved respirator jointly as sanding. If it became painted interior the 70's, the underlying coating would have contained lead. After removal, clean the exterior with a product consisting of TSP & water (tsp would not leave a residue on the wall if mixed top. some cleaners leave residue which will reason adhesion issues of coatings.) i'd then word a coating consisting of Porter Paints Blankit Primer/Sealer or Sherwin-Williams Prep ceremony classic Primer. those products are impressive primers and could bridge between oil & water-based products. end the wall with 2 coats of intense high quality acrylic paint in an eggshell or satin end. you do no longer want a semi-gloss on the wall in case you employ high quality products (no longer Lowe's or homestead Depot, use a high quality producer like Pittsburgh Paints, Porter Paints, or Sherwin-Williams). 2 end coats provides you with sturdiness, washability, and authentic coloration & uniformity. keep in mind, the extra you are able to do away with of the present precise coating, the longer your next coating will final.
2016-12-18 17:15:24 · answer #2 · answered by schebel 4 · 0⤊ 0⤋
Sounds like you may need a sealer first, then a primer before paint. You should ideally check for rising damp also.
Concrete sealer:
http://www.vseal.com/products/sealers.php
Priming before paint:
http://extras.berkshireeagle.com/nebe/homeguide/2004spring/default.asp?id=article11
2007-10-25 11:26:02 · answer #3 · answered by ♥zene purrs♥ 6 · 2⤊ 0⤋