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Can I stain my wooden flooring in a different colour?

Yes, with Osmo Polyx®-Oil Tints or Wood Wax Finish. The wood finish should be applied according to the product information along the wood grain. Allow flooring to dry with good ventilation for 24 hours and then apply one thin coat of Polyx®-Oil as a top coat.

What happens if part of the wood surface is damaged?

Unlike many traditional lacquers, damaged areas on floors treated with Osmo products can be sanded and retreated with the same products without any visible transitions.

What do I have to pay attention to when treating hardwood floors?

Some hardwoods, such as Jatoba and Merbau, can aborb very little finish due to their density and oil content. Therefore, we recommend treating wood such as these with Wood Wax Finish Clear Extra Thin or Osmo Polyx®-Oil 2K Pure, which penetrate deeply into the pores of these wood species.

What happens if I have applied too much product when treating a floor?

If you have applied too much Polyx®-Oil, the drying time will be extended considerably. If this happens, provide additional ventilation by opening windows and doors so that the product can dry through natural oxidation. If damage occurs to the surface as a result, repair the surface as described above.

What happens if I have applied too little product when treating a floor?

If you have applied too little product, water spots may appear and the wood may dry out or appear dull. In such cases, please apply another thin coat of Osmo Polyx®-Oil.

What properties should the wood have before applying Osmo Wood Finishes?

The surface must be clean, dry (max. 20 % moisture content) and frost-free.

Can I mix Osmo colour shades with each other?

Yes. The colour tones of the respective product ranges can be mixed with each other in any ratio. For instance, Osmo Country Colour 2404 Fir Green can be mixed with Osmo Country Colour 2703 Charcoal to darken the shade.

Note: Osmo Country Colour and Natural Oil Woodstain are available upon request in 186 RAL Classic and 1950 NCS color tones.

Which wood species for the exterior should be protected with Osmo WR wood impregnation?

Through the use of Osmo WR wood impregnation, the life of wood species with a lower durablity can be increased dramatically. Especially coniferious woods, such as Spruce / Fir, Pine and Hemlock, are among these wood species.

Can the Osmo WR impregnation be used as a self-priming finish?

No, it cannot. To achieve UV protection and to retain the natural beauty of wood, preferably a pigmented top coat, for example with Osmo Country Colour or One Coat Only HSPLUS, is absolutely necessary within 3 months.

Why does fungal attack occur on exterior wood finishes and how can I remove it?

The most frequently appearing fungi show up as a spotty, sometimes brownish, but mostly black attack. Moss and algae, in contrast, appear as a green film on the finish. These organisms discolour the wood and can spread over the whole area. This attack is a result of high humidity and other environmental influences – particularly in shady areas and near plants or water. The wood will not be destroyed by this discolouring fungus. The film can easily be removed by using our Osmo Gard Clean or by using chlorine bleach with a chlorine content of 5% (available at the chemist's). To prevent from such attacks, a finish containing fungicides or algicides is recommended, e.g. Osmo Natural Oil Woodstain or Osmo Country Colour mixed with 5% WR Base Coat.

Do transparent finishes offer UV protection?

An effective level of protection can be achieved with a transparent finish on exterior surfaces. Darker pigmented finishes offer more UV protection than lighter pigmented finishes. A top coat with Osmo UV-Protection-Oil can extends the life of other Osmo finishes dramatically. In general the higher the level of opacity, the higher the level of UV protection.

Is there a clear finish with UV protection available for exterior wood?

Yes, vertically installed exterior wood, e.g. cladding and screens, can be protected with a clear finish. Osmo UV-Protection-Oil contains special clear ingredients which do not allow UV rays to hit the wood's surface. Thus the greying process is delayed and the natural beauty and character of the wood is retained.

Why does the wood finish look different to the colour tone on the can?

Depending on the wood species they are applied on, finishes can appear differently in colour tone. This colour tone does not always match the sticker on the can. We recommend applying the finish to a small sample area, which cannot be seen later, to check if the resulting colour is the one you want before starting work on the complete area.

How should I treat extractive-rich woods?

Tropical wood species (e.g. Iroko, Massaranduba, Teak, Bangkirai, etc.) and highly resinous wood species (e.g. Larch and Douglas Fir) contain wood extractives which make the wood durable and provide resistance to fungus, blue stain and insects. The wood extractives may prevent binding agents (natural plant oils) from pentrating much like a release film and thereby increasing drying time and decreasing the life of the finish. Therefore, we recommend allowing the wood to weather for approx. 3-4 months before the appication. An impregnation is usually not necessary due to the wood extracives. Our special Decking-Oils are designed to match the natural colour tones of the different wood species enhancing their natural features and giving them a refreshed, natural look and a smooth surface.

Note: For the treatment of larger areas, Osmo offers a special Flooring Brush (150 mm) which enables a quick and easy application.

Can Osmo Country Colour also be sprayed?

Osmo Country Colour can be applied thinly on the clean and dry surface either by using a firm brush or the Osmo Roller and Brush Set. Osmo Country Colour can also be sprayed, for example with a cup spray gun. However, you should still also use a brush to spread the finish evenly after spraying.