Epoxy Timber Sealer & Primer 1:1

Timber Sealer

An effective method of sealing & densifying timber, and stopping mould. Penetrates deeply into the timber then sets hard. Ideal for rotten areas that can be rebuilt rather than replaced.

An excellent barrier coating for all marine situations. Use for sealing timber in home building areas where timber might rot. Contains a broad-spectrum biocide which inhibits ALGAL, FUNGAL, and YEAST micro organisms. (A coatings specific biocide that is considered NOT eco toxic as it is biodegradable below the minimum inhibitory concentration).

Overcoat with all paint systems after it is thoroughly dry, provided the surface is sanded and degreased. It can be used as a top coat in interior situations and saturates all clean dry timbers. Exterior applications should be over coated with single pack alkyd or two pack urethane systems to avoid ultra violet surface chalking.

Unfilled very low viscosity resin and hardener of clear honey colour.

Use one part resin to one part hardener by volume. The correct ratios must be adhered to. Varying these will not speed up or slow the mixture, but will decrease the cured physical properties.

100 gm mass at 20°C, 3 - 4 hours. Do not use below 12°C or in high humidity. If applying in a confined area, ensure there is an adequate airflow exhausting to the outdoors.

Designed for multiple coating to achieve a full impermeable surface barrier. Timber to be treated must be clean and dry. Degrease oily timbers such as teak, if necessary. Check suitability of treated timbers with the timber supplier. May be thinned for initial coating with epoxy solvent, up to 10% by volume. This will assist penetration. Successive coats should be applied “neat”. Allow each coat to “tack off” before next coat is applied. If previous coat is completely cured, then thoroughly sand with 180-280 grit sandpaper before re-application. Approximately three coats will be required for effective sealing of the timber. Once cured, fill low areas and joints with EPOXYBOG, sand smooth, fibreglass, if necessary, and top coat.

CAUTION: This is not a gap filling product. If over coating with a paint system, priming is not required.


When applied directly to bare timber, without diluting, coverage should exceed ten square metres per litre. Subsequent coats will not soak in to the same extent and will cover up to 50% greater area. (15 square metres.) The diluted mixture will extend the coverage rate slightly per mixed litre. Do not attempt to put on heavy coats as the mixture will sag.


Use epoxy solvent to remove uncured or partially cured resin mixture from brushes and rollers. Use disposable containers and stirring spatulae.

Timber Sealer and Primer is flammable. Do not store near boilers or other sources of heat. Do not store in direct sunlight. Shelf life is greater than twelve months. Keep in tightly sealed original containers.

500ml + 500ml = 1 litre pack
4lt + 4lt = 8 litre pack

What is it?

Epoxy resins are excellent timber sealers. They penetrate the surface and then set hard. This is a chemical reaction that is very stable and will not resolubilise or break down over time.
Importantly, because of their strength, they assist in the restructuring the integrity of the timber.

Why an epoxy like this EPOXY SEALER?

Our sealer is based on low molecular weight epoxy and amine hardener laced with a wetting agent, for even better penetration. Then we add a high solvency solvent mix to help it go in further before it sets. Finally we add a relatively “safe” broad spectrum biocide to combat any lurking fungi and yeast. Our EPOXY SEALER is different from most others because it cures bright and dry without a greasy surface.

Why a penetrating sealer?

Laminating epoxies are not designed to be penetrating sealers. Neither are epoxy glues and fillers. If the thin surface coat is broken, fungi and yeasts (micro organisms) can attack the wooden substrate.

Where can I use this product?

There are two main areas. Clean new timber, such as the interior of a boat, primarily to seal it against wood rot, and protect against dirt & oil, etc.
The second area is the repair and reinstatement of rotten timber; in the home, or marine.

What is the cause of wood rot?

Fungi and yeasts are micro organisms. They require a food source, the timber, plus moisture, oxygen, the humidity in an enclosed hold, plus some warmth. Given these, they will rapidly multiply and start attacking an unprotected wood surface and quickly travel into the wood along the micro voids that is the timber grain.

Is penetration important?

Micro organisms are just that; micro! They will go deep into the timber grain, as mentioned.
EPOXY SEALER will follow the same paths and saturate much deeper than most sealers.
When it cures, the micro organisms will be trapped within the polymer. Peripheral fungi will be killed by the biocide that migrates out of the film surface.

Can the rot re-occur?

The fungi produce spores which can remain in the timber but cannot regenerate without moisture and oxygen as long as the sealing job is done correctly.

Is it strong?

EPOXY SEALER is designed to penetrate with the aid of a solvent mix. There is the possibility of solvent being entrapped in the cured film. This will weaken the film slightly but not critically. What it is actually doing is allowing the wood to retain its strength.

Can I use solvent in the mix?

Yes you can. Although it is optimized and ready for use, 10% in the first coat will assist penetration. The first coat will probably vanish into the surface. This is a good sign that it is doing its job.

Are there Health & Safety issues?

Yes there can be, if used improperly.
Care should be exercised with the uncured resin and hardener. Don’t get it on your skin. If you do, wash it off immediately. Just because it doesn’t burn is no excuse. The side effects are with prolonged exposure. The epoxy is also flammable because of the solvent carrier. There is a strong odour; the solvent releasing, during application. Take care. Read the instructions.