Surface Preparation For Taping

 
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Old 02-07-2018, 03:29 PM   #1
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Surface Preparation For Taping


Hi all,

I'm re-taping 45° joints for a customer who initially did it themselves (see the pictures, ignore the butt joints in the overview). They installed paper-faced galvanized inside corner bead, but instead of setting it in mud, they appear to have sprayed on some sort of pink adhesive and applied the corner bead over that. Afterwards, they proceeded to finish it as normal. Over time, this pink adhesive has released and caused cracking and bubbling of the paper on the corner bead.

Now, where I'm stuck is determining if it's necessary to try to strip the adhesive, prime over it, or simply ignore it and continue taping. I'm sure they had some overspray with this adhesive, so the joint compound that was applied over it, surrounding the tape has not separated yet (if that makes sense).

If anyone has any suggestions for a primer, or stripper, I appreciate all input.

Another issue: It's half inch standard drywall (not sag resistant) hung on 22" centers. It has a lot of flex. I have two ideas to make that joint ridgid:

1. Use a heavy duty fiber tape first to fill the gap.

-Or-

2. Cut slots, slip some plywood in there and screw the drywall to it.

Again, any and all feedback is welcomed.

Thanks!
Attached Thumbnails
Surface Preparation for Taping-15180387091111220010841_1518038723934.jpg   Surface Preparation for Taping-15180387324441242697922_1518038757948.jpg   Surface Preparation for Taping-1518038783579-1314255868_1518038800757.jpg  

Last edited by Jwilliams7200; 02-07-2018 at 03:41 PM.
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Old 02-07-2018, 03:45 PM   #2
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Re: Surface Preparation For Taping


IMO, You have more issues than just corner tape coming loose. What is the cause of the crack to the left, in the 2nd photo?? Looks like it may be a clue to why things fell apart??

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Old 02-07-2018, 03:54 PM   #3
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Re: Surface Preparation For Taping


Quote:
Originally Posted by Dave in Pa View Post
IMO, You have more issues than just corner tape coming loose. What is the cause of the crack to the left, in the 2nd photo?? Looks like it may be a clue to why things fell apart??
Dave, that is a bullnose outside corner bead (see new image), which I believe was not installed correctly as well. That crack was pretty small at first, but I made it worse when removing the 45° bead.

I don't believe they screwed off the drywall thoroughly either. So I'll be pulling out ye olde drywall gun.

Thanks for the response!
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Old 02-07-2018, 10:03 PM   #4
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Re: Surface Preparation For Taping


Looks like it could be super 77, you might be able to remove that with goof off, the pro grade stuff in the aerosol can.

Don’t know how great your adhesion will be with mud set bead even after removing the glue.

Think I would re-rock that if I were looking for a lasting repair.


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Old 02-07-2018, 10:22 PM   #5
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Re: Surface Preparation For Taping


Quote:
Originally Posted by micahmye View Post
Looks like it could be super 77, you might be able to remove that with goof off, the pro grade stuff in the aerosol can.

Don’t know how great your adhesion will be with mud set bead even after removing the glue.

Think I would re-rock that if I were looking for a lasting repair.


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I used to put my bull nose on with super 77- miles of the stuff. Once, I re did a bedroom for a relative that did the same thing your person did, with the same result . You can mud over it without need to worry. This has been 5 years now and all is good. I go visit twice a year. All true.

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Old 02-08-2018, 10:53 AM   #6
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Re: Surface Preparation For Taping


Pink.....I'm guessing was the vinyl bead adhesive. Maybe using it for paper was the problem, or it dried too much before they got it stuck up there?
Either way, should be able to mud right over it.
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Old 02-08-2018, 11:06 AM   #7
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Re: Surface Preparation For Taping


I've used Super 77 a lot, and you can just use AP over it.

You aren't going to be able to do anything useful about having the ceiling on 20" spacing. Fastest is strap over the whole thing and rehang.
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Old 02-08-2018, 12:01 PM   #8
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Re: Surface Preparation For Taping


In my experience with ceilings like that, backing behind the rock is the key. That having been said, I would pro ably go get some no coat and put it on with some 45 minute quick set.
I've always had foot lasting success with that, but I still don't feel that it's ideal.

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Old 02-08-2018, 12:11 PM   #9
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Re: Surface Preparation For Taping


As of late I avoid taking on homeowner screw-upa.
If I do, I charge up da' azz.

I'd tear it out and start over. Or call in tipitop.
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Old 02-08-2018, 01:03 PM   #10
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Re: Surface Preparation For Taping


Wow, thanks for all the responses guys, this is definitely a new one for me, so your input is much appreciated. I'll take some time to consider your advice and post my progress and outcome.
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Old 02-08-2018, 01:17 PM   #11
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Re: Surface Preparation For Taping


Quote:
Originally Posted by t.carpenter00 View Post
In my experience with ceilings like that, backing behind the rock is the key. That having been said, I would pro ably go get some no coat and put it on with some 45 minute quick set.
I've always had foot lasting success with that, but I still don't feel that it's ideal.

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So what is the benefit to using top coat over that paper-faced metal, aside from not having any joints? Better adhesion? You would think that the metal would be more ridgid, but you don't get near as much adhesion on the back side because it's bare metal, and the paper isn't as wide.
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Old 02-08-2018, 06:20 PM   #12
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Re: Surface Preparation For Taping


Top coat? Or do you mean no-coat?

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Old 02-08-2018, 10:29 PM   #13
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Re: Surface Preparation For Taping


Assuming you meant no coat, is a laminate that is mush stronger than flex tape. It's 4" wide and has a "hinge memory". It flexes with the angle. I used to put that kind of thing on with quick set mud for a little bit more stick over AP.

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