I'm beginning my own table/counter that will be built into my deck. It will be built to blend in and match my existing deck and hope to do a poured concrete top. Reading a lot of threads about varnish, oil, treatment etc, and just wondered if anyone has ever used a fire retardant additive in their finishing process?
I've found a few that I'm considering using. All are water based so would have to be used with a water based sealer, anyone ever do this?