Polyurethane glue otherwise referred to as PU adhesive, is used in situations that demand extremely high durability. The degree of elasticity offered allows for use for static as well as for more tactile bonding purposes. These adhesive types are formulated from polymers and commonly have a variety of other types of additives in them too.

The Science

In the case of polyurethane adhesive – also known as PU adhesive – this means that the liquid glue will become rigid when exposed to air at room temperature. When polyurethane adhesive sets, it absorbs the energy in heat to power a chemical reaction and create a very high strength bond.

Polyurethane adhesive commonly finds usage as a dual-component adhesive, but it can be found in single-component varieties as well. Either relies on the reactivity of several chemical agents for the adhesive properties, which can often make use of a catalyst like moisture, light, or heat in the process. The adhesive often occurs in a rather thick paste and does not shrink once applied.

What is it used for?

As well as forming a strong and long-lasting bond, polyurethane-based adhesive is also incredibly versatile, making it a good choice for those needing an all-purpose adhesive that is flexible, relatively quick to set and suitable for non-porous as well as porous materials. Polyurethane glue can be used to bond leather, tile, rubber, wood, concrete, stone, metals, laminate, plastic, glass, PU, polystyrene on themselves or in combination. It can also be used to glue models, joinery, door sills, stairs, skirting boards, window sills.

It also offers complete water resistance and allows sanding and painting when it has dried completely. Polyurethane glue can also fill and even out inconsistencies in the surface you use it on. Characteristics like these, and numerous others, make this type of adhesive an essential tool that is well suited for a wide range of bonding applications.

Please take a look at our Repair Book section and our How To Fix Section for further help with many different types of repairs.

Stormsure P.U. Glue

Stormsure P.U. Glue is a liquid clear polyurethane-based (PU) adhesive that has been specifically developed to provide strong and reliable bonding to a wide range of materials. 

Stormsure P.U. Glue is a one-part polyurethane adhesive that reacts with moisture to polymerize and cure which provides very strong and waterproof bonding.

The glue is transparent so it won't discolour the objects you need to join. It is used for repairs and constructions where a very high connection strength is required and can be used indoors and outdoors.

This glue increases its volume when curing allowing it to fill irregularities. It is resistant to humidity (Class D4), shock and vibrations and temperature variations.

  • Flexible and durable
  • Fills gaps and cracks
  • Excellent balance of flexibility and high strength
  • Waterproof
  • High cohesive strength
  • Abrasion resistance
  • Impact resistance
  • Extremely tough

Complete curing time: 10-12 hours.

Resistent to temperatures from -30°C to +80°C.

How to use: Surfaces to be bonded must be free of dirt (dust, grease, etc.) as much as possible. You can use an alcohol wipe to clean the surfaces, if not, then just water will do. Be sure the surfaces are dry before application. Apply glue to one of the surfaces to be bonded. To ensure the best result, at least one of the surfaces must be porous or permeable. Thus, it is recommended to sand/roughen smooth surfaces.Assemble immediately. Press strongly and immobilize for at least 10-12 hours.

Conclusion

Despite the marginally higher price tag of polyurethane adhesives, they do offer plenty of worthwhile benefits. They are well suited for use with a variety of different materials, and their strong adhesion allows single-sided application. Polyurethane adhesives are easy to work with. Polyurethane adhesives are also highly resistant to the elements and can endure heavy contact and impact.

Please take a look at our Repair Book section and our How To Fix Section for further help with many different types of repairs.