Polyurethane glue: What are its strengths and advantages?

Polyurethane adhesives are very versatile glues made from a polymer or long chain molecule. Some are flexible and rubbery, while others are hard and tough, like epoxy. One big advantage of polyurethane adhesives is that they can be formulated to bond to a wide variety of materials. There are polyurethane wood glues, polyurethane sealants, polyurethane construction adhesives, and many more. Polyurethane adhesives are often used as a mounting glue to attach components to metal, plastic, or even glass. Polyurethane can also be made into an expanding foam for insulation and the sealing of cracks.

Most polyurethane adhesives are highly water-resistant and can withstand a wide range of temperatures, making them perfect for DIY repairs.

Polyurethane adhesives are applied like most other adhesives but there are a few variations between formulations.

For example, polyurethane glues come in one- and two-part formulas, the latter being much like an epoxy. Two component types consist of a resin and a hardener that are mixed before use. This type dries very hard and is great for filling gaps and joining rough materials like stone.

Single component polyurethane glues, on the other hand, cure with the help of moisture and are great for construction applications and flexible materials.

There is a wide variety of polyurethane glues available - but what should you consider when choosing a polyurethane adhesive for your project? Let’s take a look.

For a strong bond, or where the materials you are joining may not fit together very tightly, you’ll want a two-part adhesive. This type of polyurethane glue can fill gaps and holes and still keep a firm hold on the items being joined.

For surfaces or materials that are exposed to water, moisture or humidity, choose a polyurethane adhesive sealant silicone, which will hold up well in the elements for long-lasting protection. Make sure it’s approved for exterior use.

If you’re renovating your house, try a polyurethane construction adhesive or wood glue. It’s often recommended for parquet flooring, attaching laminates, and more.

For quick repairs around the house, try Pattex 100% Repair Gel. This handy adhesive bonds to almost anything: wood, plaster, metal, tile, concrete, stone, glass, and more. It fills gaps and won’t sag or run in vertical applications.

If you need a high-quality contact adhesive, opt for Pattex Contact Adhesive All-Purpose Transparent. This synthetic rubber adhesive formula has a long tack time and offers excellent bond. It’s transparent, which makes it perfect for Formica, fiberglass, wood, metal, and even flexible materials like leather and carpet.