Bad patching by previous workers caused deck paint to peel off. The planks are very old and were severely warped. The problem is compounded in that the planks sit on a bed of sand. This means moisture under the deck which absorbs into the planks causing blistering of alm0st any paint.
This called for complete removal of the existing paint for a good bonding surface. We planed the wood down and applied extensive epoxy paste patching to get the planks to a more even flat surface.
The only material that can resist negative side moisture and vapor pressure is a good epoxy coating. Epoxies have a tenacious grip, stronger than the wood’s bond to itself. We used Devoe Bar Rust epoxy coating with a Devthane urethane topcoat for sunlight resistance. A heavy silica sand broadcast was applied between coats to create a rough surface for slip resistance.
Our preference is 100% solid epoxies. However, we believed the solvent based Devoe epoxy would have better wood penetration. Also, the solid epoxies do not offer much of a variety of colors. We needed to keep within the color theme of the rest of the palace and the Devoe products can be custom tinted.