After a lot of research i decided to buy clear stain polyurethane for the bench i decided to strip and finish. Varnish is a clear transparent hard protective finish or film.
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However some varnish products are marketed as a combined stain and varnish.
Polyurethane over oil varnish. Minwax polycrylic is an example of a fortified water based polyurethane than can stand up a bit better to rough conditions. A solvent based one component oil modified polyurethane clear satin varnish for new or previously varnished or stained interior wood surfaces in residential and commercial buildings. However it is also a very important step that some people overlook.
The selection of a protective clear finish for your woodworking project is critical to the look and durability of your handiwork. Most wooden furniture has a polyurethane finish. Polyurethane pur and pu is a polymer composed of organic units joined by carbamate urethane links.
Touch dry in 1 2 hours recoatable in 2 4 hours fully hard after 24 hours. Many woodworkers dont give the final finish much thought and will reach for the nearest can of polyurethane varnish. Made from polyurethane and acrylic resin.
Needless to say after the stripping sanding staining which took a while the finishing was the most easiest of tasks. The big question is can you paint over polyurethane. It is not suitable for use on laminate flooring.
Preparation will pay off in. Sadolin polyurethane floor varnish is suitable for all wooden flooring including hardwood and softwood boards and parquet. How to paint over polyurethane woodwork.
Varnish has little or no color and has no added pigment as opposed to paint or wood stain which contains pigment. Varnish is primarily used in wood finishing applications where the natural tones and grains in the wood are intended to be visible. Minwax polyshades is an oil based one step stain and polyurethane finish that provides wood stain color and durable polyurethane protection.
Polyurethane polymers are traditionally and most commonly formed by reacting a di or tri poly isocyanate with a polyolsince polyurethanes contain two types of. You can paint over a surface of polyurethane varnish if you prepare it properly. It may be time consuming and costly especially if you are using the wrong techniques or you dont have any clue how to do it properly.
While most polyurethanes are thermosetting polymers that do not melt when heated thermoplastic polyurethanes are also available. Polyurethane is typically hard durable and glossy and it is these qualities that make a finish vulnerable to chips and flaking. It also can go over oil based finishes and can be applied using synthetic bristle brushes a foam roller or a rag as can other water based polyurethanes.
Easy to clean and resistant to stains and spills. The answer is yes. You dont have to remove all the varnish before you start painting.
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