It is therefore used on wooden items that will be exposed outdoors. Before starting, get a pair of strong working gloves and prepare the area where you will use the product with plastic sheets or sheets of paper, so as to avoid dripping it on to the floor or the objects to be treated.
The impregnation product is used on unvarnished wood, and makes it possible to keep the grain visible. There are many types of paint primer on the market, and most are quite toxic, so it is definitely advisable to apply the product in a well ventilated area. Before you start, prepare your wood by sanding it completely with fine sandpaper, so as to prepare the surface and to remove any traces of dirt or previous wax-based treatments.
After sanding the whole surface of the wood, clean up thoroughly, using a cloth dampened with diluted ammonia or turpentine, so as to completely remove the dust created by the sandpaper and any residual dirt. At this point the wood appears smooth and slightly opaque, with the grain and the natural porosity completely exposed.
Next treat the wood with primer, using a paintbrush that is not too large. Remember that the products are very fluid and the wood tends to absorb a large amount, so avoid soaking the brush too much, but leave it to drip slightly after dipping it in a pot of impregnating product. Spread the product using a criss-cross motion, so as to be sure to reach every point of the wood; after a first treatment wait for the impregnating product to dry and then repeat the operation at least once.