Drywall Outside Corner-Where did I go wr
I put in a 45 degree drywall corner, using a tape material with metal edge material in the middle. I used a method quite similar to the one discribed in January 2005 FineHomebuilding. The problem was that when I put on the top layer layer of compund I got “bubbles” all along the tape. Basically the bottom layer did not adhear to the tape although it seemed to before I put the top layer on. Does anyone have any idea what went wrong and how to rectify the problem.
Tom
Replies
That usually happens when the paper/metal corner bead is not fully bedded in mud. Squeezing all the mud out from under the corner also causes similar problems. Even a tiny dry spot left without compound will cause the paper to bubble up later.
Often you can cut out a small bubble before applying the second coat.
http://www.costofwar.com/
My 2 cents since I work with mud all the time......even I get the occasional bubbles so don't feel bad or you did anything wrong.
In my case, most often when this happens it's because my mud has "dried" too much in the pan as I've been using it. As it dries in the pan you don't get the nice "sticky" bond between the DW and tape because it results in some areas being "drier" than you expect. Looks fine until you hit it with the second coat which moistens the tape revealing the bubble(s). In this situation, put some water in the pan, and stir to remoisten it before working it again. When I say it "dries" in the pan I mean you can put your finger in the mud and it barely (or not at all) comes out with mud on it.
Another issue is if you put the mud on too thin and the mud is fairly wet, DW absorbs moisture rather quickly. A base coat that is too thin soaks the moisture out of the mud reducing its "stickiness" to the DW and tape. When you come along to hit the second coat, you remoisten the area and voila, you find the adhesion failed and you got bubbles.
For bubbles, I've been taught to cut the bubble out and retape that section. But I've learned not to do that anymore. Instead I slit the bubble about 2/3 around its diameter, lift the paper flap, smutz some mud under it, flip the flap back down and go mud as normal after squeegeeing mud from under the patch. For me it saves time because usually I've already put the tape away by now, so I have to run out to get it, tear off a piece, smutz it and hold it in place as I squeegee the mud out...uggh, so much simpler to just fix the bubble in place as described.,
Thanks Probably that was my problem, too dry mud. Experience is a great teacher. I finished the job by putting glue underneath. Not very ellogant but it worked.
Thanks
Tom
Glue?!?!?! Now pardon my chuckle, but that is definitely being resourceful :) Hey, it worked, right? What more do you need?If at first you don't succeed, try using a hammer next time...everything needs some extra persuasion from time to time. -ME