for overhead it's best to get fairly complete coverage so you don't get saggy areas, walls I've just done a good strip along the top and a few other spots

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot