Yup, a high quality 5 ply 1/4" underlayment. I'm sanding the seams and won't use any filler on them as they will be butted lightly. I did a floor with 32 sheets of this 4' by 5' underlayment and didn't open a bag of filler on the entire job.
If I can begin/position the underlayment correctly, a pattern line in the vinyl will reside directly over the plywood seams.
The plywood has green X's where you place the staples. I usually use 1 1/4" staples on everything.
This new 1/4" plywood I'm installing, is being installed over two layers of thin peel and stick vinyl which is on 1/2" plywood. The 1/2" plywood is nailed to 3/4" fir flooring.
If I use 1" staples, I will over penetrate the 1/2 inch plywood by about 1/4".
If I can begin/position the underlayment correctly, a pattern line in the vinyl will reside directly over the plywood seams.
The plywood has green X's where you place the staples. I usually use 1 1/4" staples on everything.
This new 1/4" plywood I'm installing, is being installed over two layers of thin peel and stick vinyl which is on 1/2" plywood. The 1/2" plywood is nailed to 3/4" fir flooring.
If I use 1" staples, I will over penetrate the 1/2 inch plywood by about 1/4".