Finishing and maintenance products for decking and wooden frontage covering (12)
The advice given by Sherwin-Williams is aimed at industry and, if need be, varnish companies. The company has launched Laqvin Fast Dry Cladding coatings and includes primers, second coats, and combi-coatings. Laqvin Fast Dry Waterborne and Laqvin Fast Dry Waterborne UV crank up production capacity considerably by shortening the drying time.
At Durieu they stick to the basic principle that no sort of wood should ever be left untreated. Wood which is dried in a steriliser may be better protected against living organisms, but it is not protected against warping, ageing, and stains as a result of weather conditions and contamination.
According to Briançon, it is perfectly possible to leave exterior wall claddings in red cedar untreated. However, if necessary, you can apply a treatment to counteract the natural ageing process. The best products for doing that are azures or saturation products. Depending on exposure to the weather, such treatments need to be repeated every three to eight years.
Some wood sorts can be exposed perfectly well to outdoor weather without the need for additional protection. We mention them in sequence, namely cedar, douglas, and larch. Other wood sorts are also strongly weatherproof thanks to a preliminary treatment (e.g. in a steriliser or a thermal treatment). Anyone wanting to protect the wood will aim primarily to preserve its original colour.
Wood outside (cladding, window frames, shutters, fences, etc) needs to be protected against atmospheric agents they are permanently submitted to; sun, rain, freezing and also moulds and moss speeds up its deterioration and ageing process.
In the Techniclic range from Vetedy all the wood sorts used can, strictly speaking, be left untreated. Any treatment is therefore applied with the aim of either preserving the original colour of the wood or obtaining a new colour of one's choice. Both purposes serve both aesthetics and durability.
As soon as the wood meets the requirements of class 3b (naturally durable), it no longer requires any treatment. Yet, like all other wood sorts, these sorts will also eventually age under the influence of sunlight. And so, the decision to treat becomes an aesthetic one: some people opt for ageing, whilst others want to retain the original colour of the wood.
The purpose of treating outdoor wood is twofold, namely colouring and protecting. Although a natural ageing look can be very attractive, there are nevertheless enough reasons for treating the wood. Wooden exterior wall cladding does not come cheap, so it is advisable to protect it sufficiently in order to guarantee its tenability.
At Irsa they advise everyone to treat all exterior wall planks, even those facing north, with oil. In order to protect non-exotic wood sorts against blue stain and wood rot, they recommend a pre-treatment with impregnation.
Chimiver Panseri has extended its assortment of products for outdoor wood treatment. LIOS SUNDECK CLIMA+ is a water-based impregnating oil for wood with UV absorption double technology. Thanks to this innovation, LIOS SUNDECK CLIMA+ is particularly resistant to the action of UV radiation, both direct and indirect.