When you are lay tile do you enjoy to put mouter underneath the underwriter board? a do it yourself project we built our house in 2001 have...

a do it yourself project we built our house in 2001 have need of we need anything beneath backer board
Do those wall stickers work?
Answers:    Yes, put a gauzily troweled coat of mortar underneath the hardi-backer (or whatever sponsor board you use). This will ensure that the board is sufficiently bonded to the wood subfloor.
Then screw down the backer-board, fiberglass tape your joint, and you are ready to install your tile.
I enjoy eletric heat surrounded by my house,...
Backer board is usually installed beside masonry screws commonly referred to as "Blues" You could use construction glue also. Mortar is for behind the tiles.