I have an interior apartment hallway I am putting down commercial
grade vinyl tile, the old vinyl lasted 50 years, it was glued down
with an oil base over a painted floor so snow, excessive water from
washing did not affect it or the subfloor or the glue bond. The
contractor wants to use Luan as an underlayment but even if it is
sealed with a primer I think it might not be right. What is the right
way to do this so it lasts,
Whether or not lauan would be suitable for OP's purpose I can't say but I
can say that moisture does not deterioate it any more than it would most any
other wood. My sailboat had hatches and skylights made of lauan lumber, NP
for the 20 years I owned it. Marine lauan ply is also available, generally
using meranti but other species too.
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