2 parts PU lacquer

A polyurethane coating is comprised of two major components: a base resin, which can be acrylic, polyether or polyester and a hardener. A polyurethane paint film is formed when those two components chemically react. Other ingredients such as pigments, solvents, leveling agents and thickening agents can also be included. Polyurethane varnishes are typically hard, abrasion-resistant, and durable coatings.

They are popular for hardwood floors but are considered by some wood finishers to be difficult or unsuitable for finishing furniture or other detailed pieces. Polyurethanes are comparable in hardness to certain alkyds but generally form a tougher film. Compared to simple oil or shellac varnishes, polyurethane varnish forms a harder, decidedly tougher and more waterproof film.

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The life cycle	Pro	Con
		High footprint Production of polyurethane is a polluting process. Show Alternatives » Alternatives finishing Low footprint Beeswax Clay and loam paint CNC engraving Flour paint Laser engraving Tung oil Veneer (wood) Wood filler (putty) High energy Polyurethane is energy intensive to produce. If you want to use it choose water based, which is also better in terms of offgassing. Show Alternatives » Alternatives finishing Low Energy Beeswax Chalk paint Clay and loam paint Edge band wood Flour paint Lime paint Wood filler (putty)

		Toxicity Low amount of VOCs. The hardener in the paint can irritate human skin and cause an allergic reaction that results in eczema. The paint can also cause allergic asthma for painters that regularly spray two-component polyurethane paints. Show Alternatives » Alternatives finishing Non toxic Acrylic paint Beeswax Chalk paint Clay and loam paint Flour paint Lime paint Linseed oil (boiled) Milk paint (casein) Shellac Tung oil Veneer (wood) Water based paint Wood filler (putty) Costly The paint has a relatively high price. Show Alternatives » Alternatives finishing Low cost Flour paint Lime paint Milk paint (casein) Difficult reuse After the two components are mixed it cannot be stored for reuse. Show Alternatives » Alternatives finishing that make it easier to reuse Beeswax Furniture wax Spray paint

	Non toxic Nonreactive when cured. Long lifespan Compared to single component polyurethane it has higher durability, waterproof and hardness. It is highly resistant to weather influences, water and chemical ingredients, scratch resistant, non-yellowing and preserves gloss. Its flexibility, hardness and durability makes it suitable as floor coating (even for slightly sagging floor).

		Difficult recycling It is an hazardous waste and must throw away once mixed the 2 parts. Show Alternatives » Alternatives finishing Easy recycling Milk paint (casein) Wood filler (putty)