Seal-Once Nano+Poly Penetrating Wood Sealer with...

Most Helpful Review

"I used the Nano clear in fall 2021 on my new cedar plank deck. I was satisfied with the Nano, though it did not last as long as I had hoped. In spring of 2023, I decided it needed to be resealed, completed in June. I saw bought the newly introduced Nano + Poly this time, but am less satisfied with the result this time. It may last longer, but Nano + Poly seems to have some disadvantages. First, it causes water to remain beaded up on the deck much longer after a rain. The standing water accumulates dirt/dust before it dries and when it does dry, it leaves a dirt spot. The dirt can be washed/scrubbed off, but it is a maintenance issue if you care about how it looks. Second, I spent a lot of time prepping the deck for this reseal job (brush scrubbed with cleaner, rinsed with oxalic and then sodium percarbonate solutions to neutralize the oxalic acid, light sanding, two coats of Nano + Poly, brush applied 20 minutes apart). Now there are small black spots sealed under the new coat that make the deck look dirty. I was hoping this was just due to having cleaned off some of the silver-grey patina that had developed, and that it would even out over the summer as it greyed again. Not so. Probably would have needed to thoroughly sand the entire deck to make it look as good as it did after the first coat. Next time, I will probably rent a sander, take off the Nano + Poly, and just use Nano only."