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Old 06-13-2014, 11:43 PM   #1
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High Build Primer


Is anyone familar with a high build primer made by HCI sold by Sherwin Williams called SW-3501-07? If so once it is applied can you wipe it off with a wet rag all the way down to the drywall?

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Old 06-14-2014, 11:03 AM   #2
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High Build Primer


I've never heard of such a thing with any type of High Build primer or any kind of drywall primer for that matter.

I guess I've never tried to wipe it off with a wet rag. Certainly that can happen. Primer and paints today need some time to dry and cure. I like to at least let any drywall primer dry for a day or two before applying topcoats.

How were the walls prepped before primer was applied? All the dust has to be removed from the drywall for max adhesion. Joints can be troublesome because that's where most of the drywall dust resides. As a pro, we always use a DRY broom to knock most of the dust to the floor where it can be swept up. Then we wet mop what's left on the walls. You don't want a real wet sponge mop, but, wet enough that it collects the rest of the dust. Then the wall is generally ready for primer.

So, in a nutshell, your problem could be poor prep or not letting the primer dry for a long enough period of time. I guess I'm still wondering why you would scrub an area of primer with a wet rag?

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Old 06-14-2014, 01:44 PM   #3
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High Build Primer


What I have on the wall is some white substance on the wall. Contractor is claiming that it is a high build primer. It looks like drywall mud. or drywall mud mixed with a little primer. It is a white color brighter than what I would normally think that drywall mud would be. However, when you wipe this with a wet rag, you can wipe it right down to the bare drywall. I am looking for someone who uses the SW-3501-07 to see if this stuff actually can be wiped off or not?
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Old 06-14-2014, 03:07 PM   #4
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High Build Primer


I'm not familiar with, nor can I find in a data base search, a primer from SW with the number 3501-07.

This is the regular SW high build primer;

http://www.sherwin-williams.com/docu.../035777637838/

If the dried film softens with moisture, it is likely that it is drywall mud mixed with primer.

Doing this is not uncommon. It creates a more sandable film that regular high build primer. You could almost call it a skim coat rather than a high build prime.
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Old 06-14-2014, 04:15 PM   #5
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High Build Primer


Agree^^^^^ once dry no primer should wipe off with a wet rag.
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Old 06-14-2014, 05:36 PM   #6
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High Build Primer


A picture sure would help. We're just guessing in the dark without much to go on.
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Old 06-14-2014, 08:29 PM   #7
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High Build Primer


you mean this stuff? http://www.sherwin-williams.com/pain...tings/primers/
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Old 06-15-2014, 12:40 AM   #8
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High Build Primer


Here is the primer. It is made by HCI and sold by Sherwin Williams under their name. It is a contractor grade primer.
Attached Files
File Type: pdf Sherwin Williams drywall primer sheet[2].pdf (84.9 KB, 27 views)
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Old 06-15-2014, 04:17 AM   #9
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High Build Primer


After it is dried, you should NOT be able to wipe it off with a wet rag, something is wrong.
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Old 06-15-2014, 09:39 AM   #10
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High Build Primer


They could have thinned it down? That would create the situation you describe, Jthomma. At this point, I would put a finish coat on a closet wall or some other inconspicuous place to see if you are going to have adhesion problems with the finish coats.

Other than thinning it down, did they perhaps add joint compound as has been mentioned & that could create the problem?

Just throwing a few things out there.

P.S. Also, anything that says "contractor grade" is, well, never a good thing.
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Old 06-15-2014, 09:59 AM   #11
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High Build Primer


I think I agree with the joint compound with some primer mixed in theory.

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