Woodoc - Questions About Wood Care? Let See What The Exports Says

General Questions

Is it necessary to sand between coats?

A light sanding with fine steel wool is essential as it smoothes down the wood fibres which tend to stand up when the sealer is applied. If no sanding is done between coats, the end result will be a rough finish.

Why do the sealers thicken in the tins and how to prevent this from happening?

As the tin is opened and the sealer used, oxygen enters the tin and this causes the sealer to thicken eventually.
  • Storing the tin upside down will help.
  • Always close the lid in the same position by marking the tin and the lid with a koki pen.
  • Do not use a hammer directly on the lid when closing, it damages the lid. Rather put a plank over the lid and hammer the plank.
  • It is also a good idea to decant the remaining sealer into a smaller tin or a glass bottle with a long neck.
  • Keeping the tin artificially full by adding marbles as the sealer is used, also helps to prevent the sealer from solidifying.

What to do when the sealer (mostly Woodoc 10) turns to jelly in the tin?

Although it is too late to dilute it, this "jelly" can still be applied with a cloth to create a lovely velvety finish.

What to do when the sealer remains sticky after application and does not dry completely?

Clean down well with steel wool and mineral turpentine, allow to dry and apply next coat. If it remains sticky, sand down to bare wood.

Why can the Woodoc sealer sometimes be scratched off the surface?

If the sealer can be scratched off the surface, it probably has not dried properly, in which case it should be left to dry. In cold weather the sealer will take longer to dry. There could however, be another reason: if there is any oil/wax/polish in the wood, it could be preventing the sealer from drying properly. Leave to dry, but if not dry within a day or so, scrub very well with steel wool and mineral turpentine. If the problem continues, sand down to bare wood.

Why does one litre of Woodoc Sealer/Penetrating Wax not weigh one kg?

This has to do with the density of Woodoc products. Water, which has a density of 1 g/ml, is used as a standard measure of density and one litre of water will weigh one kg. All the Woodoc sealers and waxes have a density of less than 1 g/ml and that is why one litre of Woodoc will not weigh one kg, but slightly less, depending on the densities of the raw materials used.

Can a Woodoc sealer be used over a spirits-based stain?

This can be done, provided that the wood is left for at least two weeks so that the stain can dry completely and the solvent can evaporate completely. Then only can the Woodoc sealer be applied.

Why do the clear sealers not look clear in the tin?

This is caused by the raw materials used in the sealers. The raw materials appear coloured, but the sealers will dry to a clear finish. To test, apply sealer to a clear glass panel and leave to dry.

Wood Maintenance

How to prevent furniture from becoming dull/waxy/smeary when using Woodoc Deep Penetrating Furniture Wax?

The furniture wax should be used sparingly in order to avoid a wax build-up which will cause furniture to look dull and smeary. Do not squirt the wax directly onto the surface. Dampen a cloth with wax and wipe over the surface. If a wax build-up does occur however, it is easily removed with cloth/steel wool, dampened with mineral turpentine.

What is the difference between Woodoc Deep Penetrating Furniture Wax and Woodoc Penetrating Weatherproof Wax?

These two products are both maintenance waxes, with the only difference the fact that the Woodoc Penetrating Weatherproof Wax contains UV-absorbers and is therefore the ideal maintenance product for a sealed surface. Woodoc Deep Penetrating Furniture Wax is a maintenance product for interior surfaces. While the Woodoc Penetrating Weatherproof Wax can be used inside, the Woodoc Deep Penetrating Furniture Wax cannot be used outside.

Can Woodoc Deep Penetrating Furniture Wax and Woodoc Antique Wax be used on French Polish?

Yes, but if you want to maintain a high gloss on the French Polish, the use of Woodoc Antique Wax is recommended.

Can Woodoc Penetrating Weatherproof Wax be used on unsealed garden / patio furniture?

Yes, but it will provide very little protection on unsealed surfaces. The surfaces should be sealed with a Woodoc exterior sealer and the weatherproof wax used for maintenance. It will feed the wood through the sealer and help the sealer to last longer.

Compatibility of Sealers



Can interior sealers be used outside and can exterior sealers be used inside?

The interior sealers cannot be used outside. They do not provide protection against the sun as they do not contain any UV-absorbers. The exterior sealers can be used inside, but will take longer to dry than outside. It is recommended however, that interior sealers are used inside and exterior sealers outside.

Are the different interior sealers compatible, e.g. can Woodoc 20 be applied over Woodoc 10?

The different interior sealers are compatible and can be applied over each other, provided the surface is first cleaned/scrubbed well with steel wool and mineral turpentine.

Are the different exterior sealers compatible, e.g. can Woodoc 30 be applied over Woodoc 50?

The different exterior sealers are compatible and can be applied over each other, provided the surface is first cleaned/scrubbed well with steel wool and mineral turpentine.

Can interior sealers be applied over exterior sealers and exterior sealers over interior sealers?

This is not recommended, as the exterior products have been formulated with exterior conditions in mind and the interior products with interior conditions in mind.

Can Woodoc sealers be applied over other sealers/sanding sealers/varnishes/paints?

Because Woodoc Sealers are penetrating sealers, they must be applied to bare, sanded surfaces so that they can penetrate deeply to feed the wood, bind with the wood and finally form a protective coating on the surface. Woodoc sealers should therefore NOT be applied over other varnishes, sealers, paints or sanding sealers.

Can other paints/varnishes/sealers be applied over Woodoc products?

Most oil paints with mineral turpentine as solvent can be used over Woodoc products. The best is to consult manufacturers of other products to determine whether their products can be used over Woodoc products.

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