I had to do a repair on the back corner of my trillium
. The ensolite had come away (leak) and shrunk. I used this matting I got from CTC. It is a rubbery/plastic material for flooring. Comes in pk 4,each sq is 24' X24X3/8 , Textured on one side and smooth on back. It's easy to cut. I painted over it with flat latex white, I attached it to walls with Lepages contact cement and so far so good.
A fellow near me did his whole inside of a trailer with it and just mixed the 4 colours, no paint
. Beauty is in the eyes of the owner. ??
I'll see if I have a before and after of repair & post it.