Weather is brutal to wood and paint. Many historic homes have sound wood siding but will not hold paint. Over the years bacteria and fungus has made the surface of the wood spongy. Paint particles are not small enough to get through to sound wood. Soon after painting, the bacterium has eaten enough of the wood to render it unable to hold paint. The paint peels off the wood. If left in the weather long enough water will transport the bacteria deep into the wood and create dry rot. End grain is nothing more than a sponge to hold the moisture and accelerate dry rot.

This never-ending cycle is why Clear Penetrating Epoxy Sealer was invented.

        Unlike an adhesive epoxy, CPES; is water thin epoxy made for penetrating, which soaks far into damaged wood. The solvent base is the transport mechanism to deliver the epoxy resin into the open spaces within the wood. The same solvents also evaporate excess moisture from within the wood. All of the wood fibers and spores are then left encapsulated with the remaining epoxy. It glues the remaining fibers back together, and restores useful strength back into the wood, without changing the natural flexibility of the wood. Cold weather formula of CPES will cure below freezing for winter use. Natural Wood Appearance may be attained by using Epoxy Clean Up Solvent.

     This is why rot starts up again behind conventional repairs with other products.  The slice on the right was treated with Clear Penetrating Epoxy Sealer™ [CPES™] dyed blue, so that regions of abnormal porosity would be visible after impregnation.

The wood was placed in a shallow tray and the liquid wicked up into the wood.  In only a few minutes, in regions where the fungi had eaten the wood, the dyed resin was now visible.  CPES Impregnating Resin impregnates deteriorated wood much more than sound wood, because it has more porosity.

     These regions are now impregnated with a highly rot-resistant and water-repellent resin, and useful mechanical properties are restored.  This treatment improves the ability of the wood to resist further deterioration.  This is the first step in the restoration process.  When finally painted, the impregnating resin glues the paint to the wood, so it sticks better and lasts longer.