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Old 06-03-2009, 07:41 PM   #1
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Thoughts on using Exterior SW Duration as a primer.


I have read a lot of the posts but I don't think I read anybody's thoughts on using SW Duration as a exterior primer. It is self priming paint. I have plenty of paint so I am not worried about running out. I plan on painting wood garage and house, aluminum siding. Maybe this was wrong to do, but I used a pressure washer on the garage and it seemed that paint was coming off in long narrow strips leaving what looked like veins on the garage. Going down to the original primer. If the paint was coming off like this (fairly easy for the pressure washer), should I just strip it down to the wood. It looks like only one layer of paint. I don't want to use good paint and within a year the paint would peel off. There are some bare wood spots. The house paint is very chalky. If it is recommended, that I prime the garage and house, what brand of primer should I use? I called a SW store and they said I didn't need the primer. So if I don't need a primer especially if I have the Duration, can I get away with Zinsser or Kilz? (a less expensive primer)


Rob

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Old 06-04-2009, 04:32 AM   #2
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Thoughts on using Exterior SW Duration as a primer.


Personally,I would never paint a customers home without a slow drying oil based primer, even with the so called self priming paints. I cannot afford to be called back in a couple years to re paint someones home.I use Duron but I think all good paint co's have their own version. I would certainly not use Kilz for this purpose
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Old 06-05-2009, 07:25 AM   #3
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Thoughts on using Exterior SW Duration as a primer.


Should I strip the garage paint?
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Old 06-05-2009, 08:38 AM   #4
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Thoughts on using Exterior SW Duration as a primer.


it sounds like the paint is peeling in sheets because it was not washed before the last time it was painted. when the garage is dry, pull off a chip and see if the substrate is chalky. if it is, there is your problem.

Sherwin-Williams no longer says that Duration is self priming. You should use a quality exterior primer. A-100 oil primer is an excellent product but you can get away with using an acrylic product if you dont like solvent based materials.

Kilz is an interior primer - read the can. actually read the can of every material you plan on using. there is important information on it. If you were to prime with Kilz what would happen is your top coat would become chalky within the first year or two and fail shortly after.

Duration is a great material - i just painted my wood house and used Duration on the trim only. I cant afford to paint everything with it. I used A-100 latex on the siding.
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Old 06-05-2009, 06:02 PM   #5
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Thoughts on using Exterior SW Duration as a primer.


Should I strip the garage paint?

You certainly need to remove anything that is not firmly attached
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Old 06-06-2009, 05:34 PM   #6
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Thoughts on using Exterior SW Duration as a primer.


"Self-priming" paints work well in perfect conditions, not problem areas
This is a problem area
A "slow drying" or "penetrating" primer is what is called for in cases such as this
Even the "Lab Boys" (as opposed to the salespersons or reps) up at SW would agree to that in this particular case

And yes, any/all ill-adhering coating should be removed regardless
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Old 06-09-2009, 08:31 AM   #7
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Thoughts on using Exterior SW Duration as a primer.


I will get some SW primer. I looked at the paint and it seems half the paint on the boards is gone already. I think I will just strip the rest of it off and start fresh. Really just the peace of mind of knowing that it won't peel off in a year or two if I didn't strip the old paint off.

Thanks all for your input.
Rob
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Old 06-09-2009, 09:40 AM   #8
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Thoughts on using Exterior SW Duration as a primer.


Apply the peel away and strip it all down or use a paint eater. Then after you allow a couple days to pass use a high build primer because you may have some bad looking wood that regular thin mil paint will not hide.

I use SunShield for this type of work, but i know SW or BM carried HB primers. Get with a manager of the stores for the best help.

Generic answer, but heading out in a few for some work. I will check back for further help to you.

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