Built my 2 story garage with T-111 17 years ago, then applied solid stain.
Not a bubble, no cracks no rot. Finally restained last year, only because
color had faded. Used Behr solid stain, BTW, both times.

I'd skip the back priming.

Curmudgeon


"andy everett" wrote in message
news:cZHuj.1307$JF.373@trnddc01...
My thoughts on the pros and cons of back priming T-111 siding that will go
over Tyvek house wrap and cover a small stud framed cottage.

Back prime, pros, moisture from house will stay out of siding and reduce
paint peeling. Cons, extra paint and time. Moisture may be trapped in wall
causing premature rot of wall sheathing.

Don't back prime, pros, save money and time. Moisture will tend to rot out
the easier to replace T-111 siding and not the wall sheathing. Cons, paint
may blister faster as moisture tries to escape beneath paint.

Thank you for any thoughts on the matter you might share with me.

P.S. Seems like the proper application would call for 1x3 diagonal
sleepers to be installed first and then the back primed siding. This would
solve both potential problems (rot and paint blistering) or is that over
kill. I guess this would also cause some detail problems around the
windows and door?