Because it is cementitious thinset is dimensionally stable it will not shrink or contract.
Tiling wall fill low splots with thinset.
You may want to tape several strings down criss.
If more pressure is placed on low.
How to use a thinset for leveling.
Pour thinset powder into a bucket and add water.
This should be be done if you want to put a mosaic insert of thin glass tile 1 8 inch between thicker architectural tiles like 3 8 inch stone and ceramic and still have a flush surface.
Low areas on a surface can be built up with thinset mortar mixed with an additional aggregate of very coarse sand a few days before tile is laid.
Fill in the unbowed areas of the wall to bring them in line with the bow by floating extra thinset made extra sticky with the addition of an additive such as latex.
Lay a flat board over the tiles paying attention to the uneven spots and beat the board with a rubber mallet.
Using thinset to fill in low spots.
Or is it better to put another thin layer of the mud mix that i used for the shower base.
Need to make some adjustments in the shower pan pitch where i have flat spots and or low spots or the pitch is slightly off.
Deep screed thinset over them to create a flat surface.
Thinset tile mortar provides a very strong bond and is resistant to moisture and mold growth.
You just mix the powder with water and pour to create a flat smooth surface.
This technique works best for.
Mark your low spots with a level and use the self levelling mix.
Mix it very thin and runny so when you pour it it will run to the low spots.
Is it ok to use thinset to adjust the slope and fill low spots even if it means skimming the entire surface to make adjustments.
This will drive the tiles deeper into the mortar.
If you find low spots more than 1 4 in.
Thinset is also heatproof so it will not lose its grip in hot environments.