Wood surface coatings must have different specifications for the application that the surface will be used for. The point that is common to all coating systems is to have an attractive appearance and good adhesion to the surface. In case of covering doors and windows and other internal surfaces, it should be resistant to common substances inside the house such as tea, coffee and detergents. The covering of wooden external surfaces should also be resistant to atmospheric changes and sunlight. Both thermoplastic acrylic systems and two-component isocyanate-cured systems can be used to cover wooden surfaces.