Exterior plywood use
I am new to this site, but need help. I have a porch floor that is doug fir plank and the maintenance of sanding & staining is no longer possible for me to do due to injury. I would like to use a nice quality indoor / outdoor over the top. It was advised to use exterior plywood first, so the spaces between the planks will not show. The porch is covered, but the edges still get wet. Should the plywood be treated, covered with EPDM, or ??? to have a job that lasts? Or is it OK as is? I am leery of this horizontal application. Thanks for your help on this, I will check back later today.
I should add that the doug fir is elevated over a concrete porch so it has air space underneath [from the framing it is attached to] and no soil contact. I would take it down to the concrete, but that would cause other problems due to the change in height [several inches].
Last edited by Norma Christie-Coney; 06-07-2017 at 08:34 AM.
Reason: additional info