Clear Penetration Epoxy Sealer™

Warm and Cold Versions

Clear Penetrating Epoxy Sealer (CPES) consists of a tough, flexible resin system in a solvent blend which dissolves the sap, oil and moisture found in wood. Wood is strengthened while allowing normal expansion and contraction with changes in temperature and humidity. When repairing wood that has mild dry rot, CPES will migrate along the abnormal porosity which dry rot fungus creates within the wood, as long as it continues to be fed in. Impregnation of wood with CPES changes the cellulose of wood (which fungi and bacteria find tasty and easily digestible) into epoxy impregnated cellulose which resists further attack by fungi and bacteria while reinforcing the wood, accomplishing permanent restoration. Paint or varnish will last longer becuase the paint has a stronger chemically compatible surface to bond to.

CPES comes in both cold and warm weather formulas. The solvent blend of cold weather formula has a milder odor, as well as evaporating about six times faster. These features allow restoration work to be completed sooner and to be done in the winter when most products do not work properly.

Restoration of wood inside a house such as in a bathroom, a door threshold or the inner part of a window sill, should be done with the cold weather formula rather than the warm weather formula when the house is occupied, due to the much milder odor and more rapid solvent dissipation of this version.

Examples of rot and the paths left by fungi. In order to stop rot from progressing you must not only stop the fungi that is present in areas that are visibly but also the fungi that is in solid wood adjacent to visible rot. This can be up six inches depending on the wood. Via capiliary action CPES solvents will carry the epoxy into these areas and encapsulate the fungi and make the wood in the surrounding area foul tasting to fungi. You have not only restored the wood but stopped further progess of fungi.

View Penetrating tests

The long working time (pot life) of these products mean they will retain their penetration and moisture-dissolving ability for more time. Read and follow application instructions. Keep rain or dew away from areas being treated with CPES until solvents have evaporated out of the wood. This will take at least a day and may take a week or more, depending on the extent of deterioration, how deeply the CPES soaked in and the temperature of the day and night. CPES is also a consolidant for old crumbly concrete or mortar between bricks, and is as essential component of effective osmosis blister treatment on fiberglass boats.


Cold Weather Clear Penetraing Epoxy Sealer

The Cold Weather versions of Clear Penetrating Epoxy Sealer was developed because there has always been a need for restoration on deteriorated wood, repair of osmosis-damaged fiberglass boats, and adhesion-promotion of sealants of coatings in cold weather as well as moderate or warm weather.

The particular kind of resins that must be used in Clear Penetrating Epoxy Sealer in order to obtain all its usual performance features, which have made the product famous, do not cure well below about 10°C and essentially stop curing by 2°C. This problem is characteristic of that entire class of materials, and has been well known to chemists for half a century.

Early in 1991 the research staff of Smith & Co. discovered the fundamental reason why this is so, and discovered the Dual Synergistic Catalyst which makes it possible for these resins systems to develop a full and predictable cure at temperatures down to minus 2 °C, slightly below freezing!

The entire formula was redesigned to take advantage of the new technology without sacrificing any of the existing properties or advantages. The new formulation behaves essentially the same in freezing weather as the standard formula of Clear Penetrating Epoxy Sealer does in moderate weather. The new formulation was designed to absorb as much water as the existing systems does from wood or osmosis-damaged fiberglass laminate, and in addition to dissolve the ice crystals that form in damp materials subjected to below-freezing conditions.

Clear Penetrating Epoxy Sealer will prevent freeze-thaw damage to concrete. This surprising performance was discovered by a customer in Finland and verified by the National Testing institute. Copies of the test report are available.

This product is recommended for use from 10°C to -2°C. Above 20°C the solvent evaporation rate may be too fast for some applications. The Cold Weather version of Clear Penetrating Epoxy Sealer is furnished as two-component system which mixes some one-to-one by volume. Once mixed, it is recommended that the product be used within its"pot life", although it will be fluid for much longer.

In estimating the state of cure obtained after some time it is important to consider that the nightime temperatures are usually much less than daytime temperatures and so nighttime provides less progress towards full cure than daytime. This makes the Cold Weather version of Clear Penetrating Epoxy Sealer valuable when the daytime temperatures are in the 10 -15°C and night time temperatures are in the 0 - 5°C.

These two laminated beam sections were adjacent slices, cut side-by-side and one treated, so you can compare the almost identical wood before and after impregation. The fungi that causes rot leave an abnormal porosity in apparently sound wood near the decay.

Rotten wood is clearly visible. The rot actually extends into wood that looks good. 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 dyed blue, so that regions of abnormal porosity (rot) 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 thefungi had eaten the wood, the dyed resin was now visible. CPES resin impregnates deteriorated wood much more than sound wood, because it has more porosity.

These regions are now impregnated with a highly rot-resistant, water repellent resin. Useful mechanical properties are also 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 paints to the wood, so it sticks better and last longer.

There are epoxys manufactured for fiberglass layup, for restoring automobiles, fast cure glues and others. They were manufactured to be used for specific applications. CPES was also manufactured for specific applications. Every product will do the job for the applications intended.

CPES is a two-component product, made from largely the same oils and resins as are in wood. This product was manufactured for the following application. Restoration of deteriorated wood, CPES inpregnates wood by a capillary action. It does not require the use of hyprodermic needles for penetration. Application is by brush, roller or low-pressure sprayer. CPES contains solvents, which dissolve the saps and oils in wood. Restoration and reinforcement of the wood is accomplished without changing the natural flexibility of the wood.

How does CPES mix with moisture and dissolve it from wood?

Epoxy resin systems do not readily dissolve water, but CPES contains a feature which which dissolves not only the moisture in wood but also the saps and oils. It is quite one thing to dissolve oils in wood but quite another thing to dissolve saps & moisture. The product was orginally designed for the marine industry in the restoration of boat hulls. Clear Penetrating Epoxy Sealer(CPES) will greatly reduce the infusion of water, reduce expansion and contraction and still allow the wood to breath as much as it needs to. The wood is now stablized.

How does CPES make coatings stick and last longer?

In order to obtain a good bond between wood and any paint or filler, the fibers on the wood surface must be strongly bonded to each other and to the filler or coating. The bond must be very flexible since wood expands & contracts as the humidity in the air changes with the weather and the seasons of the year. All Epoxy products are not the same. Most are made from petrochemicals. CPES is made substantially from wood itself and these particular resins when cured will be comparable to the orginal wood. This is the reason why it sticks so well to wood and why topcoats stick so well to treated wood. Topcoats are actually sticking to epoxy-impregnated wood fibers glued down into the bulk of the wood by CPES. CPES is very unique in that its formulation can do all these things.

After soaking for a couple of hours in Clear Penetrating Epoxy Sealer, not only can you see CPES working its way up the sides of the wood but a view from the top lets you easily see how Clear Penetrating Epoxy Sealer is working its way through the wood. This is why it so effective at solving rot problems in areas that you cannot see, and hard to access. Monies and time are saved because the harder it is to access an area for repair the more expensive the repair will be due to time and materials. This product does the work for you.