I'm replacing the seat planks of an outdoor bench with white oak. The planks will be bolted to a metal frame on each end, there's no joinery. I'd like to seal the end grain to slow down water penetrating into the wood. I was thinking of using a penetrating epoxy like Smith CPES or Total Boat. I've used Smith's before, but not Total Boat. I think Smith's is lower viscosity. I could also use West Epoxy (which I have) and add some solvent. I could put West epoxy on the end without thinning. It wouldn't penetrate as much, but would probably seal pretty well. I will not be finishing the wood. I'm interested in hearing peoples thought and suggestions on this.
Thanks,
Scott