It is a product based on drying oils and synthetic resins. There are several types on the market, such as marine varnish and polyurethane, which are very resistant to water and moisture. There are varnishes with
Polyurethane (PUR) is one of the most efficient insulation materials on the market. PUR is available in the shape of insulation boards or foam. However, the boards have a better insulation value than the foam variant. Moreover, these boards guarantee a certain thickness in advance and nothing...
Other types such as the epoxy and polyurethane fillers are also quite handy to have in the workshop. But you should only use epoxy fillers on an unfinished wood as they require a lot of sanding which can ruin the finish. It is also important to note that wood filler is not expandable ...