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The paint on the exterior of my house is chalking pretty badly. I used a house wash and 2500 psi pressure washer to prep the surface (cement board), but the chalking is still an issue. It is particularly bad in the areas the get more sunlight. What are my options? I considered power washing again, but im not sure how much it will help. Ive heard that you can put additives into the paint to help seal the chalking paint, but I have no experience with that. The only other thing I can think to do would be to prime the entire house - which I really dont want to do..... I noticed the Zinsser 1-2-3 said that its only an exterior "spot primer." What is the correct primer to use over larde exterior areas? I am painting with SW A-100 paint. Any help would be really appreciated.
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