We have a window seat in the living room that is made out of 3/4" plywood and 2x4 framing 16" OC and is painted. We are interested in laying 18x18 in travertine tiles but I have a few questions.
- Since this is a low impact area mostly used for plants can I use mastic or do I have to use thinset.
- If I have to go with thinset can I rough up the painted surface or do I need to put down a backerboard? If so I was going to use 1/4" Hardiboard because there will be almost no weight on the tiles.
- We will be edging the front with 2"x12" travertine moulding. Can I use mastic and hold in place with painter's tape until set?
Thanks in advance for any advice
kb