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lifetimeremodel

11:13PM | 11/09/08
Member Since: 08/31/08
12 lifetime posts
Bvbrush
I recently installed drywall tape on an inner corner I am doing, but I noticed after it dried that the tape did not adhere very well to the wall. It seemed to do better up towards the top where I started, but I think down towards the bottom, the joint compound was too dry by time I got to it. Does anyone have any suggestions for how to fix the mess I already have without removing it completely (i.e. carefully peel edge of tape up and inject something under it, or maybe just go right over it with more mud as I inteneded on doing anyway)? And, does anyone have suggestions on what I can do in the future to prevent this from happening (i.e. put more mud down on the corner before installing the tape, only do a couple of feet at a time)? Thanks.

Billhart

04:07AM | 11/10/08
Member Since: 04/25/05
1915 lifetime posts
If you used standard premixed mud I would "wash" it off and start over.

Take a wet sponge and go over the joint. As the water works in it softens the mud and you can scrap it off and the tape.

If you used "hot mud", where you mix it with water and it comes in a time ratings like 45 and 90 then it sets up like plaster and can easly be removed. Work a putty knife under the loose edge and keep working to loosen as much as possible. Then cut out all of the loose parts and overlay with the who area with new tape.

You probably work too much mud from out from under the tape with too much pressure on the knife.

For small areas I like to keep the mud kind of stiff.

Then take the take the tape and dunk it in a bucket of water. Then pull it out run the tape through your fingers to take of the water. You want the tape damp, but not dripping wet.

Then put mud on the wall and put on the tape and use the knife to bed it in.

lifetimeremodel

06:11PM | 11/10/08
Member Since: 08/31/08
12 lifetime posts
So, if I just go over the tape that is loose with more joint compound, that will not plaster it down? I would be covering it with texture, primer, then paint after that. Plus its in the corner behind the fridge. I'm just worried that if I try to remove it I'm going to make it worse than it already is. I read two books about taping and neither of them mentioned wetting the tape before hand with warm water. I will try that. Yes, it was the pre-mixed type of joint compound. You know, the green,red, and white 5 gallon bucket that weights about 70 pounds. Thanks.

Billhart

06:56PM | 11/10/08
Member Since: 04/25/05
1915 lifetime posts
The tape has to be "glued" to the drywall. That requires full coverage of mud under the tape.

Just putting mud on top will look good, but will crack within a year.

lifetimeremodel

10:45PM | 11/10/08
Member Since: 08/31/08
12 lifetime posts
Okay, sounds like I need to remove the old stuff. I will try doing it like you described with the wet sponge. Thanks.

lifetimeremodel

10:35PM | 12/08/08
Member Since: 08/31/08
12 lifetime posts
Okay, I removed the old stuff just as you described without any real issue. I was wondering....is there any reason I cannot use the fiberglass mesh tape for inside corners? Since this tape actually sits down "in the mud" rather than on top of it plus it has adhesive on it, I feel like it would be much less likely to give me the same problem as earlier where the tape does not stick on the wall very well. I know it costs more, but since I only have ~50 feet to do (~6 inside corners with 8 foot ceilings), I can live with the extra cost if it works better and is easier. Any thoughts? Thanks.

Billhart

04:06AM | 12/09/08
Member Since: 04/25/05
1915 lifetime posts
If you check the manufactures recommendsation like the DW manuals mesh tape is not as strong as paper.

And it is only recommended to be used with stronger "hot mud" mixes.

Those are powders that you mix with water and then set in short period of time. You can get them in many different times such a 15 min, 45, and 90.

Durabond and Easysand are to versions.

It is like working with concrete or plaster and you need to clean up your tools before it sets.

And scrap it onto newpaper or a trash bag.

YOU DON'T WANT TO WASH IT DOWN A DRAIN. IT CAN SETUP AND BLOCK IT.

lifetimeremodel

05:31AM | 12/09/08
Member Since: 08/31/08
12 lifetime posts
Okay, thanks for the info.
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