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Vertical seams giving me issues....Need advice

2K views 20 replies 5 participants last post by  endo_alley 
#1 ·
This particular problem has been plaguing me all winter, and honestly anywhere I'm finishing vertically laid drywall.

After my initial tape coat. I'm applying first coat of mud with 8 inch knife. Then the second coat with a ten. And then either finishing third coat with a 12 or a 10 again. My finished product has a dip in it Uniformly from floor to ceiling. I have attempted to go back over with an 8 inch knife and it doesn't seem to remedy this. This doesnt happen on my horizontal seams. I hope someone has some advice on this.

Thank you
 
#10 ·
A 15" flat box.
Ahh, ok, yeah I have absolutely no experience with any auto tools.

I tried doing two swipes with a 6 in knife. Going approximately 2 inches on the right side of tape , and then another pass 2 inches over the the left side of the tape. And then wiping off with a 10in knife. This seemed like it helped but it doesn't seem consistent.
 
#16 ·
Sky Shade Rectangle Road surface Composite material


So the wall got painted, I got a text on sat morning that all the seams are visible.

I tried to fill em in . I'm not sure how successful I was.

I was wondering if a skim blade would help here. I have some new verticals to do and I'm definitely going to try the 10in knife practice that was suggested. I'm thinking my boss may just go get a 15" flat box. I've never used auto tool , but only because I can't afford them. Lol

I really appreciate everyones time, and help. Thank you
 
#18 ·
View attachment 42095

So the wall got painted, I got a text on sat morning that all the seams are visible.

I tried to fill em in . I'm not sure how successful I was.

I was wondering if a skim blade would help here. I have some new verticals to do and I'm definitely going to try the 10in knife practice that was suggested. I'm thinking my boss may just go get a 15" flat box. I've never used auto tool , but only because I can't afford them. Lol

I really appreciate everyones time, and help. Thank you
You'll regret the 15 inch flat box. If for nothing else just the weight of it.
 
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