They told me today that there is a varnish that is transparent. In their opinion, they say it will not yellow and that any yellowing happens after years and years. Not sure if I should just let them do what they are used to doing and not try so hard to look for a water based finish.

None of us have a crystal ball we need pictures and also some info as to what was done .

Hi! We have huge front porch deck that needs to be stained or sealed (waterproofing) ! I was told the porch floor is made by Mahogany, Originally it was more brown tone, but after 3 years + sun UV (south facing porch..), now looks rustic grayish tone which I kinda like. Thinking about staining a bit grey-ish brown(not too brown/ red color) Which brand is most recommended for stain/seal for porch for durability, especially water & UV protection? I’ve been searching on google and couldn’t decide since there are too many choices😓 TIA!

have you tried posting this on diychatroom.com? lot's of trades people on there.