DuroGrit

Can DuroGrit be applied on every wood type?

Yes. Colour advice does vary based on wood type, so we recommend taking a look at our DuroGrit colour advice chart for several wood species to find the colour that works best for your wood type.

Can we apply a second layer of DuroGrit for an even better protection or more intense colour?

DuroGrit is a one layer product. When two or more coats are applied, the UV protection will be improved but the system will also become more film-forming. This might result in typical problems of film-forming systems such as flaking/peeling. In addition, the curing time will also be prolonged. However, in exceptional cases, e.g. very grey/weathered wood, a second layer might be necessary for aesthetic reasons. The first layer will act as a primer, but due to the high and inequal absorption of the wood, a second layer will provide a more uniform colour result. In these cases we also advise diluting the DuroGrit with 20% of water. The risk of building up a thick film-forming layer here is low, because a lot of the product is absorbed into the weathered wood.

How can we remove overlapping of DuroGrit?

Small errors can be touched-up on the wet surface up to 15 minutes after application, depending on the weather conditions. Apply a bit of extra DuroGrit with a brush. Put some pressure with your brush to dissolve and mix the old product with the new one. Go over it several times and smooth out. If you are too late and the surface is already dry, you can remove the overlap by lightly manually sanding the product away in the direction of the grain and applying some new product. It is best to do such a correction before the product is completely cured (e.g. during the installation and not a few days later).

Does the addition of Open Time Extender affect the UV and/or mechanical resistance of DuroGrit?

No, but make sure to add no more than 10%.

What are the minimum and maximum temperatures in which we can apply DuroGrit?

Do not apply below 10°C or above 30°C.

How many product of DuroGrit is used m²/L?

8-15 m²/litre. Consumption strongly depends on the type of wood, weathering and preparation. Old wood, wood that has been left untreated outdoors or grooved wood often absorbs more product. Therefore always purchase slightly more product than the recommended liter per m². You can use the leftover to maintain and touch up the surface with the same product. In exceptional cases, e.g. on very weathered or highly absorbing wood consumption can be twice as high (even up to 6 m²/liter). In these cases, adding up to maximum 20% water can help control the spread rate.

Is it really required to let new wood age for 4-6 weeks before applying DuroGrit?

This is more of a recommendation than a hard rule. It mostly depends on the particular wood used. For example, fresh cumaru wood would definitely benefit from a few weeks of weathering to rinse out the extracts that the wood contains. After all, these might soften the coating when they migrate into the wood. Other wood species such as pine or ipé seem to be less sensitive to this. We recommend that you test your local wood species or send a few samples to our lab to estimate if this is required in your particular situation.

What is the total drying time for DuroGrit?

General drying time is 1 to 3 hours. The exact drying time, however, depends strongly on the relative air humidity and temperature. Drying, in the sense of the evaporation of water, can go very fast, especially when it's windy or sunny. Usually, you can carefully walk on the decking with socks as early as 1 to 2 hours after application. However, at this point the oil itself is not yet cured. It takes around 24 hours on a cloudy day before the surface is sufficiently hard to walk on. This might be faster when it's sunny.

How can I remove stains from spilled DuroGrit product on non-targeted adjacent areas?

First of all, protect the adjacent areas from spilled product by using plastic, cardboard or tape to cover up risk areas. If some product is spilled despite this, immediately remove the spilled material from non-targeted areas with soap and water. Product that is allowed to dry will be difficult to remove.

How should we handle a renovation with DuroGrit?

Clean the surface with Exterior Wood Cleaner and re-apply DuroGrit in the original colour. Depending on the degree of fading of the colour, dilute DuroGrit with maximum 20% water to avoid applying too much product and making the colour too opaque.

How can we clean a surface treated with DuroGrit?

Only use Exterior Soap (Ecospray) or All Natural Wood Cleaner (Spray). Do not use other cleaning products.

How can we clean brushes and tools that were used to apply DuroGrit?

Clean them with water, immediately after use. After multiple uses, the bristles of the brushes may start to feel a bit “oily” or sitff. In that case, you can clean the brushes also with warm (not hot!) water and mild soap or dish detergent. Another option is to use a bit of Exterior Wood Cleaner and water. The product will come off much faster than with just plain water. Repeat the soaking and swishing process until the water runs clear. Rinse well with clean water.

Is it possible to mix DuroGrit colours?

In theory, it is possible to mix DuroGrit colours with each other. However, these new combinations may not give the same durable protection as our standard colours and may fade at a more rapid pace. Since these have not been tested in our laboratory for durability, we cannot give guarantees for this.

Is there also danger for auto-combustion with DuroGrit?

No. DuroGrit is a water-based product and is not made with linseed oil. Therefore, there is no risk of auto-combustion.

Can we apply DuroGrit over Hybrid Wood Protector?

Yes. Make sure to use Exterior Wood Cleaner before the application with DuroGrit. Sanding the layer of Hybrid Wood Protector is not necessary, unless the Hybrid Wood Protector layer is still very present. Keep in mind that DuroGrit is a transparant finish. This means spots were the old Hybrid Wood Protector coating is still present, will stay visible. - Watch out though: you cannot apply DuroGrit over WoodCream, nor can you apply it over a non-Rubio Monocoat coating. It also is not compatible with Sunprimer HWP.