You didn’t put that renew with the grit in it down did you?
I’ve been seeing where that stuff traps moisture between the product and decking boards. Then rot takes place fairly quickly. We started putting disclaimer/FYI statements in our reports because of it.
Harry Homeowner puts it down before putting his home on the market to make his deck look better. Deck might of looked “worn”, but no rot was found at the time of the inspection.
Fast forward 8 - 10 months and I’m getting several emails from past clients saying, “You inspected my home a year ago. We had a gathering and my friend fell through the deck and injured herself. What are you going to do about this?”
Even the renew without the grit will do it, just slower.
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