Wooden cladding: new or weathered effect? - House side
Home/Fitting out, Renovating /Facade, roofing /Wood cladding: new or weathered effect? By Valentine Buvat, published on 06/27/2012 at 08:00Some appreciate its natural patina and leave it gray. Others struggle to retain the freshness of the original wood. Our advice for a successful cladding facade.
Under the effect of UV rays and bad weather, the color of unprotected natural wood changes, graying or even blackening. This coloring is more or less regular depending on the exposure of the facades; you have to be patient - 5 to 10 years - before obtaining a homogeneous result. Even if the graying is only superficial (it does not affect the mechanical qualities of the wood), it transforms the look of the house. But it is better to be warned: fighting against the effects of time is a real constraint.
The wood is already grayYou can use a grayer or sand by hand. In the first case, wet the cladding, apply the gel with a brush or roller, leave to act for 15 to 20 minutes and rinse with plenty of water (Blanchon, Durieu, Syntilor). To find the original color, you can also sand methodically then brush to remove dust before considering treatment. Tedious!
Gray your wood in advance
Anticipating graying ensures harmonious aging of the facade. If the used oil whitewash is not really green, you can however choose pre-greyed cladding ("New Age" range, Sivalbp) or even apply a gray saturator ("WoodCare" light gray or anthracite) to bare wood. , Bohme).
The wood is new
Two possibilities: apply a saturator or a stain.
The saturator
The saturator, made up of natural oils and synthetic resins, penetrates deep into the wood fibers to protect, nourish and waterproof. Colorless or slightly tinted (wood look), it leaves no surface film and does not peel. Some brands recommend applying UV protection beforehand ("SunCare UV 900" then "WoodCare", Böhme). Others offer all-in-one products (Blanchon, Owatrol). To prevent greying, the application must be renewed for the first two years, then every 3 to 5 years depending on the exposure of the wood.
Stain
Stain forms a microporous anti-UV film allowing the wood to breathe (Blanchon, Bondex, V33). It can be satin or matte, colorless or available in a wide range of colours: wood tones, translucent colors (not hiding the grain of the wood) or opaque. It offers up to 8 years without maintenance. Be careful, at the end of its life, the stain flakes off, which is not very aesthetic. A new coat will then have to be applied. If the finish is still in good condition, a preliminary brushing is sufficient. Otherwise, you must first sand or even strip.
How do woods age without treatment?LarchIt has a yellow color when it is new, then it turns silver.Pine and spruceTreated by autoclave, they have green reflections which fade, then they turn gray and darken little by little. Red Douglas It loses its pinkish hue in favor of grey. Softwoods and poplar Treated by thermo-heating, they have a honey-caramel tone that changes over time to silver-grey. The Red CedarIt goes from rosé to medium grey.
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