Tub surround problems

[mnye00]

I am tiling a shower surround (walls) in my basement and have installed the cement board and thought I was ready to go... wrong.

It looks like the studs behind the board are a little out of alignment and this is causing some big dips. If I hold a 4' level against the back wall, the left had side is about 1/4" recessed in some places. How can I solve my problem. Can I simply apply thinset to the wall in all the low places until it is all on the same plane?

Any thoughts?

Thanks

 

[macten]

You can skim over low spots with rapid set or if it's a case of just unscrewing the boards from the studs then take them off and pack out the problem studs with window packers and reinstall.

 

[mnye00]

Taking the board off may be a bit of a problem because the joints are already mudded and taped. It looks like I may need to fix one whole end of the wall as the corner stud seems to be the problem and is set back a bit from the others. If that is the case is the "fill-in" approach still recommended (although maybe not preferred)? Thansk

 

[macten]

1/4'' no problem.

 

[Martino]

1/4 inch is nothing like macten said, use some rapid set to get rid of this prior to tiling, use a piece of wood and run it upwards unce you have rapid set on the wall, abit like browning if u no what i mean?....this way it will be perfectly flat

 

[mnye00]

1/4 inch is nothing like macten said, use some rapid set to get rid of this prior to tiling, use a piece of wood and run it upwards unce you have rapid set on the wall, abit like browning if u no what i mean?....this way it will be perfectly flat

Goods news, thanks Gents.

Now, if I go over the walls and find deeper depressions than 1/4" what would be the limits if this solution?

 

[macten]

Cement board means their won't be a weight issue so you can go quite thick - not all in one hit mind, just build it up over a few layers giving previous layer time to go off.
Obviously if you find it's out by miles over a large area then bite the bullet and sort out the rogue stud.
Which ever way you go be sure to get it flat before you start tiling unless you're a sadist!