Some companies are listed under multiple coating types. Powder coating has been used in the metal-finishing industry for many years, but application on wood introduces several potential problems. The main difficulty encountered with applying powder coatings to wood is creating adhesion between the powder particles and the wood prior to curing. Powder coating wood products is more difficult than powder coating metal because the wood cannot be grounded as well. The adhesion of the powder particles to the wood can be improved by heating the wood prior to applying the powder.
Heating equalizes the moisture across the surface, allowing electrostatic deposition.
Another difficulty with powder on wood applications is the sensitivity of the wood to high temperatures. The powder cannot be cured at the temperatures typically used when coating metals. Excess temperatures would cause deformation of the wood. However, the powders used on wood have been specially formulated for the low curing temperatures. Safety concerns include the potential for the powders to form explosive mixtures with the air.