FloppyKnockers
Well-Known Member
Moisture levels (humidity) are 100% in a chilled system in contact with outside air.
Your deck is in the open with open air flowing about it. If moisture gets to the wood here where we intend for it NOT to get, by default it is in a somewhat secluded area and not likely to dry well.
In outside air, sure. Don't leave the door open. Otherwise the average humidity of a fridge hovers around 40 - 50%.
Deck or fridge, sealer is sealer. If moisture does get on the wood it is likely to dry very fast because of the low humidity levels of the fridge.