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-   -   Pre-Primed Siding (http://www.diychatroom.com/f4/pre-primed-siding-122542/)

slus 11-06-2011 10:25 AM

Pre-Primed Siding
 
So I'm painting a garage with pre primed Hardieboard type siding. The contractor said it was fine to just hit it with finish coat. I was skeptical since I figured the primer was bottom dollar junk, plus it has been installed for at least 6 months. Now my question is, I bought SW Duration paint, which is supposedly self-priming, do you think that the combination of pre primed boards and self priming paint is enough? OR should it be primed anyway? Time IS a factor, but I don't want to be doing 3 coats of finish or have the paint sheet off in a few years.

Thanks for helping a new guy, I searched but couldn't find my specific problem.

Gymschu 11-06-2011 02:04 PM

I've done it both ways........I have primed HP with SW's Loxon masonry primer to ensure a nice finish.......and, I have cheated before (so to speak) and simply painted over some HP that was pre-primed & was out in the weather for 6 months. Both jobs were 3 to 4 years ago and still look great. Did I just luck out? Perhaps. To be on the safe side, gently clean the HP, allow to dry, apply some Loxon primer and 2 finish coats.......then you will know you covered all your bases.

slus 11-06-2011 04:06 PM

Thanks for the tip. Does that primer need to be back rolled on HP or can it just be sprayed?

Gymschu 11-06-2011 05:03 PM

Quote:

Originally Posted by slus (Post 765227)
Thanks for the tip. Does that primer need to be back rolled on HP or can it just be sprayed?

Always best to backroll in my opinion.


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