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Drywall Repair Failure

 
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Old 03-28-2015, 12:49 PM   #41
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Re: Drywall Repair Failure


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Originally Posted by icerock drywall View Post
and what kind of mud did you use on your tape coat...Did u you light mud ?...and dont see to many screws ...did you add blocking ?



I add mudmax to my repair jobs...no need to paint first.

I have no idea what mud was used. It was 2 years ago.

It was screwed every 16" on joists.
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Old 03-28-2015, 12:58 PM   #42
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Re: Drywall Repair Failure


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Originally Posted by Sir Mixalot View Post
Unless the tape kept the mud underneath it from drying longer than the area with no tape and that could be what made the primer and paint fail underneath the tape. It was just wet to long...



@Extrememtnbiker, How long did you wait before you second coated over the embeded tape and then before priming and painting?

Not sure. My Dad did the repair and it was two years ago. I think we used to wipe too much mud out on tape coat. That could be part of it.

The job was finishing off an attic as I mentioned. So I would assume there was no rush and we would have had a day between coats minimum.

When you explained how you do repairs, I have a couple questions.

So you spray Kilz as quick as you can I assume. This is not on the bare drywall for your patch, but on the surrounding surface that was existing. 12"-14" out?

Then after that dries, you tape with hot mud 20 or 45. Are you using the fibafuse tape or mesh?

How quickly can you put the next coat on? Guys on here have said things like, hot mud is dry but not cured.

With the fibafuse, my understanding is you could tape and then coat over the tape at the same time. Then I guess you would let that dry some, and do another coat.

Then come back and do a 3rd a different trip.

I'm just interested in a bit more info if you're willing to share.
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Old 03-28-2015, 02:18 PM   #43
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Re: Drywall Repair Failure


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Originally Posted by Xtrememtnbiker View Post
I have no idea what mud was used. It was 2 years ago.

It was screwed every 16" on joists.
if it was durabond the tape would not come off
same with ap if its mixed so It must be light crap...
2nd coat over ff with the 2'' roll is not good....might peek
I never prime before I do any repair...I might get a little bubble sometimes but no big deal.
with ff 36'' rolls you cant go wrong
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Old 03-28-2015, 06:43 PM   #44
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Re: Drywall Repair Failure


Quote:
Originally Posted by Sir Mixalot View Post
Unless the tape kept the mud underneath it from drying longer than the area with no tape and that could be what made the primer and paint fail underneath the tape. It was just wet to long...

@Extrememtnbiker, How long did you wait before you second coated over the embeded tape and then before priming and painting?
Exactly, if it was primed, then I might think the primer was still wet when taped.
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Old 03-31-2015, 05:21 PM   #45
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Re: Drywall Repair Failure


Paper tape will stick to paint just fine. even with high gloss ..It will stick.

The op's pic looks like the tape was wiped too tight . Like Rob said poor adhesion . And now it's been redone with FF? Good luck!
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Last edited by blacktop; 03-31-2015 at 05:29 PM.
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Old 03-31-2015, 05:36 PM   #46
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Re: Drywall Repair Failure


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Originally Posted by blacktop View Post
Paper tape will stick to paint just fine. even with high gloss ..It will stick.



The op's pic looks like the tape was wiped too tight . Like Rob said poor adhesion . And now it's been redone with FF? Good luck!

So what's wrong with Fibafuse?
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Old 03-31-2015, 05:44 PM   #47
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Re: Drywall Repair Failure


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Originally Posted by blacktop View Post
The op's pic looks like the tape was wiped too tight .
Larn me, how do you do that? I thought the object was to squeeze just about everything out from under it.

As for sticking to the paint, it did in this instance.
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Old 03-31-2015, 06:07 PM   #48
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Re: Drywall Repair Failure


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Originally Posted by Tinstaafl View Post
Larn me, how do you do that? I thought the object was to squeeze just about everything out from under it.
It helps to leave mud under the tape.

As for sticking to the paint, it did in this instance.

Did you not see the bare rock? Kinda hard to see if it stuck to the painted surface ? Since It was a painted surface. But the bare board tells me there was no mud beneath the tape for adhesion . That's why it failed.

or not. I could be way off base! I''m just looking at a picture on the web!
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Old 03-31-2015, 06:10 PM   #49
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Re: Drywall Repair Failure


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Originally Posted by Xtrememtnbiker View Post
So what's wrong with Fibafuse?
It ain't paper !
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Old 03-31-2015, 06:11 PM   #50
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Re: Drywall Repair Failure


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Originally Posted by blacktop View Post
Did you not see the bare rock? Kinda hard to see if it stuck to the painted surface ? Since It was a painted surface. But the bare board tells me there was no mud beneath the tape for adhesion . That's why it failed.



or not. I could be way off base! I''m just looking at a picture on the web!

But there was paint between the tape and the board. Bare board proves the paint failed. Right?
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Old 03-31-2015, 06:12 PM   #51
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Re: Drywall Repair Failure


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It ain't paper !
And it makes my hands itchy...
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Old 03-31-2015, 06:12 PM   #52
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Re: Drywall Repair Failure


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Originally Posted by blacktop View Post
It ain't paper !

Well isn't that helpful. have you seen it fail?
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Old 03-31-2015, 06:34 PM   #53
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Re: Drywall Repair Failure


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But there was paint between the tape and the board. Bare board proves the paint failed. Right?
After enlarging the pic ..It's messed up that the tape stuck to the painted surface but failed to the bare board ..seems like the other way around would have made more sense ... I still say it was wiped too tight .


But lets take a step back here .. Why did you tear the tape off.. Did It crack or bubble up?? I think I missed that part . ADD!!
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Old 03-31-2015, 07:01 PM   #54
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Re: Drywall Repair Failure


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After enlarging the pic ..It's messed up that the tape stuck to the painted surface but failed to the bare board ..seems like the other way around would have made more sense ... I still say it was wiped too tight .





But lets take a step back here .. Why did you tear the tape off.. Did It crack or bubble up?? I think I missed that part . ADD!!

The side it stuck to was the bare repair board. The side it failed was the already painted surface of the existing ceiling.

But what you are seeing and calling bare board is the existing ceiling that was painted before my repair. The tape was cracking and hanging down a slight bit. I just pulled the tape off with my hands.

The paint pulled off the existing board. And was stuck to the tape/mud.
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Old 03-31-2015, 07:10 PM   #55
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Re: Drywall Repair Failure


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The side it stuck to was the bare repair board. The side it failed was the already painted surface of the existing ceiling.

But what you are seeing and calling bare board is the existing ceiling that was painted before my repair. The tape was cracking and hanging down a slight bit. I just pulled the tape off with my hands.

The paint pulled off the existing board. And was stuck to the tape/mud.
unless I was there to do the patch work In the first place !It's really hard to say over the interweb!
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Old 04-01-2015, 07:17 AM   #56
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Re: Drywall Repair Failure


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It ain't paper !
It's gods gift to rookie patching! I love it!
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Old 04-03-2015, 01:02 PM   #57
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Re: Drywall Repair Failure


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Originally Posted by Tinstaafl View Post
Larn me, how do you do that? I thought the object was to squeeze just about everything out from under it.

As for sticking to the paint, it did in this instance.
If it was regular drywall, then you are good to go. Over paint you can do that. It's just not likely.
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Old 04-03-2015, 01:06 PM   #58
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Re: Drywall Repair Failure


Quote:
Originally Posted by blacktop View Post
After enlarging the pic ..It's messed up that the tape stuck to the painted surface but failed to the bare board ..seems like the other way around would have made more sense ... I still say it was wiped too tight .


But lets take a step back here .. Why did you tear the tape off.. Did It crack or bubble up?? I think I missed that part . ADD!!
Not enough mud in setting the tape. Come on people this is taping 101. This is obvious.
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Old 04-03-2015, 02:18 PM   #59
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Re: Drywall Repair Failure


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Originally Posted by BUTCHERMAN View Post
Not enough mud in setting the tape. Come on people this is taping 101. This is obvious.
It did look like the new board was the high side..I agree . It was wiped too tight.
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Old 04-03-2015, 04:32 PM   #60
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Re: Drywall Repair Failure


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It did look like the new board was the high side..I agree . It was wiped too tight.
What does that even mean? This sounds like that scene in the movie Major League where they said "It's not a homerun, it's too high".

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