Spar polyurethane finish. Wondering why the knowledge of the two finishes matters. Spar urethane on the other hand is commonly used on wood that is commonly exposed to the light heat and sun. Like spar urethane polyurethane is a plastic resin that is carried in water. It creates a finish that looks shiny and polished while remaining durable enough to last.
Parts of the cupboards come in contact with sun each day and the original finish has wore considerably and thought maybe the spar would be better for that and the water contact. Spar urethane of which minwax helmsman is a leading brand is spar varnish that includes urethane plastic as one of its resins. To reveal flaws bubbles brush marks etc as you work shine a light at a low angle across the. Polyurethane can be a difficult debate but polyurethane typically wins when it comes to indoor applications.
Contains uv blockers to reduce the suns graying and fading effects. Why choose the right one between spar urethane and polyurethane. I will walk you through this comprehensive polyurethane vs spar urethane guide and help you select the right finish. Is there anything in the spar polyurethane that would be harmful if used say on the kitchen or bath cabinets.
This is also a common finishing used for things that are submerged in water like boats because of its resistance to water. Polyurethane finish features a few downsides because it cures sets and rises more slowly than spar urethane that could dry in a matter of minutes. There are many different types of polyurethane but most of the newer blends are non toxic. Its the go to material for any exterior woodwork that needs a clear finish but because its high resin content gives it a yellowish hue it isnt the best choice for interior furniture.
Forms a protective barrier against rain and moisture. Thinning the polyurethane makes it flow on more smoothly and reduces brush marks. As its name suggests it is made up of more than one urethane compound which are joined together by a reaction known as polymerization. Prepare the polyurethane by reducing it about 10 percent with mineral spirits unless youre using water based polyurethane which doesnt need thinning.