drywallporcelaintiletransition
I'm in the process of tiling now (porcelain tile).
I noticed that the seam between the Densheild and the drywall is slightly not even.
Do I need to use the all purpose compound (used for dry wall) to try making them even.
Or shall I use the thinset mortar that I will use for tiling?
Or shall I leave it like this?
These seams will be covered by the tile at the end.
I'm going to use this thinset
(Custom Building Products Natural Stone and Large Tile 50 lbs. White Premium Mortar)
Use a laser level to project a level line across the wall. Something like this is self leveling.
This won't work if you need to line them up to a non-level reference. In that case you can use a simple laser line (which is much cheaper than the self leveling models).
Shower tiles are not a place to cut corners. If they are porous then you will have a host of issues. Basically you will breed mold faster and the tile install won't last as long - mold gets in cracks and pops tiles out or at least loosens bonding. You need to get a non-porous stone, plastic, glass, or porcelain.
If going with 12x12 tiles you will need at least 1/16th of an inch given they are uniform - and perfectly cut 12x12 are not cheap. So you are looking at 1/8-3/16. Which means you need sanded grout.
For cheap I suggest you go on craigslist or whatever is equivalent locally (even try job leftovers at tile store). The bottom 3 feet of your install needs to be a good tile - you will need about 34 sqft. You can get decent porcelain for $2 a sqft and even cheaper if it is a job leftover or end of stock. You can still use your ceramic up top. And when switching tiles I usually put in a narrow trim of glass mosaic in between - will need 3-4 sheets.
Best Answer
I think the difference appears to be minimal and you can just leave it.
Take a tile and place in on the denshield so it overlaps the drywall and place the edge trim behind the tile, if the gap between the back of the edge trim and the drywall is an 1/8" or less it will be fine.
A little extra thinset will fill the difference in the depth.
The extruded aluminum edging may not sit flush or down tight to the drywall but that can be hidden with a bead of caulking.