Clear sealants protect surfaces from damage caused by weather, chemicals, and traffic. Types include urethane-acrylic, polyurethane, silicone, lacquers, butyl, and varnishes. They can be water or oil-based and come in matte, semi-gloss, or gloss finishes.
Clear sealant is a type of liquid used to protect a surface from damage caused by weather, chemicals, traffic, and other elements that can damage a surface. There are clear sealants for concrete and wood products for interiors and exteriors. There are also sealants available to protect tiles and grout, metal and masonry. Types of clear sealant include urethane-acrylic, polyurethane, silicone, lacquers, butyl, and varnishes. Sealants can be water-based or oil-based, some products can have color added to them, and many of these products are available as matte, semi-gloss, or gloss to produce the type of finish desired.
Acrylic urethane can be brushed on or comes in a spray bottle. It can be used on a variety of products, including wood, and is one of the least durable sealants available. Lacquer is another wood sealer that comes in a clear formula. Many commercial furniture companies use varnish to seal the piece and create a glossy finish. The lacquer dries very quickly and several coats can be applied in a short time.
Varnish is also a quality clear sealant made with resin and mixed with petroleum or acrylic products. It is a slow drying sealant so there is a risk of dust or particle build up during the curing process. It applies easily and is a popular choice for those new to wood finishing.
Polyurethane is a popular sealant that’s used on a variety of products, including roofs and gutters. It is very resistant to scratches and other corrosion, but the smell of the product is strong after application and can be detected even months after application. Can be sprayed, brushed or applied with a caulk gun. Polyurethane is a flexible material and is commonly used to seal joints due to its elasticity.
Silicone is a flexible material that is water resistant, can withstand extreme temperatures, and is resistant to ultraviolet (UV) light, making it a favorite product for boats and motors. It is best to use silicone on glass, porcelain, epoxy, rubber, vinyl and ceramic products. Unlike acrylic, silicone cannot be painted.
Another type of clear sealant is butyl. Butyl is a water resistant adhesive that is very sticky, making it difficult to work with. It is commonly used as a clear sealant for concrete, masonry and metal roofs due to its durability, longevity and ability to adhere to many different types of material.
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