Flash forward-subject asks me to inspect his deck and give him a quote to fix.
Inspection reveals a crack in the deck, following what appears to be the seams of the OSB sheathing.
Here’s some pictures, take a look and see what you think has caused this problem.
Email me at Bill@Waterproofdeckcoatingadvice.com and tell me what you think.
I’ll post my thoughts in a couple of weeks…