Douglas is one of the most picked timber kinds in the Netherlands for fences, decks, canopies and cladding. With proper care it remains strong and good to look at for years. You can allow natural greying, or you can keep the warm colour.
Why care for Douglas?
Raw Douglas turns silver grey in sunlight and rain. That silver grey is only the colour, not decay. Want the warm tone? Yearly care is a smart habit. Cleaning also prevents moss and algae that hold water on the face.
Cleaning the timber
Clean at least once a year with lukewarm water and mild soap. Use a soft brush and avoid high-pressure washers at close range. Browse our Douglas range for spare boards.
Oiling the timber
Deck oil that resists sunlight slows the grey. Apply thin coats in dry weather above 15 °C. Treated Douglas needs less care. Cleaning still helps the boards last and look better.
A simple yearly routine
Good Douglas timber maintenance does not take much time. In spring, brush off leaves and dirt, and check the boards for loose screws, splits and soft spots. Clean the surface and let it dry for a few days. If you want to keep the colour, apply a thin coat of oil or stain while the weather is dry. In autumn, clear away leaves again, so water does not stay on the wood all winter.
Details that make Douglas last longer
Most problems start where water cannot run off. Keep posts out of standing water and, where possible, place them on a post base or concrete foot. Leave a small gap between deck boards, and between boards and the ground, so air can reach every side. Treat saw cuts and drill holes, because end grain takes up water much faster than the face. Use stainless or coated screws, as plain steel can leave dark stains in Douglas.
Grey or warm colour: what to choose?
Both are fine. Grey Douglas is just as strong as fresh timber, and it only needs a yearly clean. A warm red-brown look needs oil or stain every year or two, depending on sun and rain. Choose once and stick with it: going back from grey to warm brown means cleaning and sanding first. Read what is Douglas timber? for more about the species.
Finally, check fences and canopies after a storm. Loose boards and screws are easy to fix early, but they can cause more damage if you leave them for a whole season.
A little attention each year keeps Douglas strong and good-looking for much longer. If you need replacement boards, we can help you find a matching size.
FAQ
Do I have to oil Douglas every year?
Only if you want to keep the red-brown colour. For a natural grey look, cleaning is enough.
Can I paint Douglas timber as well?
Yes, with primer and outdoor paint. Oil keeps the grain in view. Paint gives a flatter look.
When should I replace Douglas boards?
Replace them when they split at the fixings, show soft spots, or have rot at post bases. Contact us for advice on your project.
Can Douglas fir be pressure treated?
Douglas fir heartwood absorbs preservative poorly. That is why Douglas fir is usually sold untreated and then stained or oiled. Houthandel Jan Sok does not pressure treat Douglas fir. If you want treated timber, choose pressure-treated pine. For timber that can go in the ground, read which timber can go in the ground?