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Silock 09-07-2012 10:07 AM

Exposed Drywall Paper
 
Can I just put primer on the paper before I mud over it, or do I have to go to Sherwin Williams and get this Gardz stuff? I already have the primer, so one less trip would be great.

penguinz 09-07-2012 10:15 AM

Yes. Just make sure you use a quality Primer such as Killz

Brock 09-07-2012 10:24 AM

Why would you primer it before you mud?

Silock 09-07-2012 10:29 AM

Quote:

Originally Posted by Brock (Post 8886031)
Why would you primer it before you mud?

Because the paper is exposed . . .

Silock 09-07-2012 10:29 AM

Quote:

Originally Posted by penguinz (Post 8886012)
Yes. Just make sure you use a quality Primer such as Killz

That's what I have.

mikeyis4dcats. 09-07-2012 10:29 AM

Yoo prime before you PAINT, not finish.

Kilz is not necessary unless there is something on the drywall that could bleed through (oil, marking pen, etc.).

A standard drywall primer is fine, available at any home or paint store.

Brock 09-07-2012 10:31 AM

Quote:

Originally Posted by Silock (Post 8886037)
Because the paper is exposed . . .

Do you mean the paper is ripped? Drywall paper is made to take mud. You may need to watch some DIY videos before doing this.

mikeyis4dcats. 09-07-2012 10:35 AM

Quote:

Originally Posted by Silock (Post 8886037)
Because the paper is exposed . . .

you mean the paper is torn?

http://www.do-it-yourself-help.com/i...wall-paper.jpg

If so, you need to carefully and cleanly cut out that area of paper with a utility knife so that only the damage layers of the brown paper are removed. You want to end up with a clean, smooth brown surface that looks like toilet paper roll. Then you DO need to seal it with an oil base primer such as Kilz.

DaneMcCloud 09-07-2012 11:09 AM

Home Depot also offers paint with primer

Luke Warm 09-07-2012 11:19 AM

White out....scotch tape.

You're welcome.

Silock 09-07-2012 11:46 AM

Quote:

Originally Posted by mikeyis4dcats. (Post 8886053)
you mean the paper is torn?

http://www.do-it-yourself-help.com/i...wall-paper.jpg

If so, you need to carefully and cleanly cut out that area of paper with a utility knife so that only the damage layers of the brown paper are removed. You want to end up with a clean, smooth brown surface that looks like toilet paper roll. Then you DO need to seal it with an oil base primer such as Kilz.

Yes, this is my problem. I cut out the paper that is torn, but I can't get it much smoother without taking off more paper. I'm using 220 grit. Do I need finer grit? Wet sand it?

Phobia 09-07-2012 11:53 AM

Seal it up with the primer at this point. That will harden the last little bits and it will sand better for you. Do not wet sand torn drywall paper. That's just going to make a bigger mess.

DaneMcCloud 09-07-2012 11:58 AM

Quote:

Originally Posted by Phobia (Post 8886238)
Seal it up with the primer at this point. That will harden the last little bits and it will sand better for you. Do not wet sand torn drywall paper. That's just going to make a bigger mess.

Why not throw some mud on there?

Just a question from a non-professional, not a disagreement.

Phobia 09-07-2012 12:16 PM

Quote:

Originally Posted by DaneMcCloud (Post 8886251)
Why not throw some mud on there?

Just a question from a non-professional, not a disagreement.

For the same reason you can't wet-sand it. Mud is going to moisten the torn paper and make it a mess. It won't sit down and dry properly without being sealed first.

In some cases, it will work - like if you're putting a heavy coat of mud on top that mud will harden and probably be fine but if you're just skimming, the paper will bubble, separate from the gypsum, and never sit flat for a nice finish.

DaneMcCloud 09-07-2012 12:18 PM

Quote:

Originally Posted by Phobia (Post 8886297)
For the same reason you can't wet-sand it. Mud is going to moisten the torn paper and make it a mess. It won't sit down and dry properly without being sealed first.

In some cases, it will work - like if you're putting a heavy coat of mud on top that mud will harden and probably be fine but if you're just skimming, the paper will bubble, separate from the gypsum, and never sit flat for a nice finish.

Ah, that makes sense. Thanks!


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