Many people wonder how to buy a polyurethane brush, because there are so many to choose from. Before you decide to go out and buy one, it is a good idea to read this Buyer's Guide to Polyurethane Brushes. This Buyer's Guide will help you determine the characteristics that you want in a polyurethane brush. It will also help you compare different types of brushes and what each type has to offer. By knowing the characteristics and qualities of different brushes, it will be easier for you to decide which one to buy and which one to avoid.
The primary quality that you want in a brush is that it should be strong. Polyurethane is a very flexible polymer and it is brittle when it is cold. It also does not create drag during application process; One of the most useful brushes to use for applying polyurethane to flat and textured surfaces; The softest brush to use for staining leather; Avoid: The synthetic bristles can easily remove quickly; The brushes can create dark lines on flat and textured surfaces; Most polyurethane brushes have limited durability and if they are used on rough surfaces frequently then they may develop mildew. The Buyer's Guide to Polyurethane Brushes reveals that when choosing a polyurethane brush, its hardness should be in the range of seven to ten on the hardness scale. It should also be available in grades A through L, with each grade representing an improvement in the brush's performance.
There are numerous types of finishes available in polyurethane brushes and each type creates a unique look and feels in any surface it is used on. Each type of finish has its own specific characteristics that make it ideal for use on different types of materials including wood, plastic, metal, and textured surfaces. Some finishes create light "marks" on the surface while others produce heavier "scratch marks" or lines. Marks are usually dark in color and lines are light to give a natural finished look.
The primary advantage of polyurethane brushes is that their bristles are not as susceptible to damage as those made from other materials. However, this does not mean that the polyurethane brush bristles are immune to damage. Over time, repeated use of these brushes can create tiny air bubbles in between the ferrule holes. This can result in the formation of microcracks in the ferrule and will cause these cracks to widen and spread over time.
The number one way in which to prevent this form of damage is by using a high-quality sealer along with the polyurethane brush. Sealers like Sunbrella can help the brush from damaging your surfaces. The sealer also helps to prevent any leaks which might occur if water gets inside. Sunbrella can be purchased at most hardware stores.
Some manufacturers of durable polyurethane bristle brushes also recommend the use of an oil-based polyurethane finish over an oil-based polyurethane finish. Oil-based finishes are more durable but also wear out faster. An oil-based finish will need to be reapplied as needed over the life of the structure. Some professionals prefer the use of oil-based finishes because they are more durable and have a longer shelf life than their petroleum-based counterparts.
It is important that when you use polyurethane brushes that the bristles are cleaned and polished regularly. This helps to keep dust and dirt from getting inside the bristles which can result in broken or worn-out bristles. In addition to cleaning the brushes and buffing them after use, professionals often spray them with a water-based acrylic sealer to help seal them and prevent them from breaking down or wearing down. Once you apply an acrylic sealer to your polyurethane brush, you will get professional results that last a lifetime.
Whether you are building a woodworking project or applying polyurethane to a wood frame, there are many options for choosing the right type of brush. Choosing a quality wood brush with a protective coating will make it possible to create the best possible woodworking or painting job every time. You can find polyurethane brushes made from cedar, teak, or walnut wood.