Polyurethane Sealants

ARBO's range of polyurethane sealants are the number 1 choice across multiple industries.

Polyurethane Sealants

Polyurethane Sealants Range

Polyurethane sealants are widely used for sealing and bonding applications, known for their resistance to moisture, weathering & chemicals. The ARBO range of polyurethane sealants are a 1 part foil packed product, ideal for floor jointing and expansion joints.

Explore the range or read more about polyurethane sealants below.

Different Uses for Polyurethane Sealants

Polyurethane sealants are used across various industries due to their excellent sealing and bonding properties. Here are some industries where polyurethane sealants are commonly used:

Construction and Building: Polyurethane sealants are widely used in the construction industry for weatherproofing, waterproofing, and insulation, making them suitable for applications such as window and door sealing, expansion joints, roofing, concrete joint sealing, and general construction sealing.

Automotive and Transportation: Polyurethane sealants are used in the automotive and transportation industries for various sealing and bonding applications. They are used in automotive manufacturing for sealing body seams, windshields, windows, and sunroofs.

Marine and Boat Building: The marine industry extensively uses polyurethane sealants for sealing and bonding applications in boat and ship construction. They are used for sealing hulls, decks, hatches, windows, and other areas where water-tight and durable seals are required.

Aerospace: Polyurethane sealants are used in the aerospace industry for sealing and bonding applications. They are used in the manufacturing and maintenance of aircraft for sealing fuel tanks, windows, doors, and other critical areas. 

Electronics and Electrical: Polyurethane sealants find applications in the electronics and electrical industries for protecting and sealing electronic components and assemblies. They are used for potting and encapsulating electronic components, sealing connectors, and providing environmental protection for sensitive electrical systems.

Industrial and Manufacturing: Polyurethane sealants are utilised in various industrial and manufacturing applications. They are used for sealing and bonding in the production of appliances, machinery, equipment, and fabricated metal products. They provide sealing solutions for components subject to vibration, thermal expansion, and environmental exposure.

Advantages of Polyurethane Sealants

Polyurethane sealant possesses many advantages: 

  • Unlike silicone sealants, polyurethane sealants can be painted.

  • They also have adhesion compatibility with many construction substrates, such as stone, metal and wood

  • They possess excellent tear and abrasion resistance and have the ability to be used in a broad range of joint sizes

  • They are also resistance to UV rays, ensuring that prolonged exposure to UV light does not harm or affect the sealant. This makes polyurethane sealant a suitable choice for outdoor applications where materials may be exposed to UV light. 

What is The Difference Between Polyurethane Sealants and Silicone Sealants

Both silicone and polyurethane sealants serve the purpose of sealing gaps and openings, but they possess distinct characteristics and compositions that make them suitable for specific applications.

A silicone sealant is an inorganic substance, whereas polyurethane sealant is an organic material. This fundamental difference in chemical makeup influences various factors, including their response to UV light and their overall durability and versatility.

Polyurethane sealant is a versatile type of sealant used for various sealing and bonding applications. Its properties make it suitable for a wide range of uses in construction, automotive, manufacturing, and general maintenance.

However, there are certain applications that are not useful for using polyurethane sealant, particularly when sealing fixtures in and around the house. This is where a silicone sealant may be used as an alternative.

Silicone sealants excel in sealing around plumbing fixtures, such as sinks, toilets, and other similar fittings, due to its ability to form a waterproof seal and resist mould and mildew growth.

Polyurethane Sealant FAQs

What are polyurethane sealants?

Polyurethane sealants are versatile materials used for sealing joints, gaps, and cracks in various applications. They are a type of adhesive sealant that provides excellent adhesion, flexibility, and resistance to weather, moisture, and chemicals.

How do polyurethane sealants work? 

Polyurethane sealants typically come in a tube and are applied using a caulking gun. When exposed to air, they undergo a chemical reaction known as curing, during which they transform from a liquid or paste-like consistency to a solid, rubbery material. This curing process allows them to form a durable seal with the substrate.

Where can polyurethane sealants be used?

Polyurethane sealants have a wide range of applications. They are commonly used in construction for sealing windows, doors, concrete joints, and expansion joints. They are also used in automotive, marine, electronics, and various industrial sectors for sealing and bonding purposes.

How long does it take for polyurethane sealants to cure? 

The curing time of polyurethane sealants depends on several factors such as temperature, humidity, and thickness of the sealant layer. Typically, it can take anywhere from a few hours to several days for the sealant to fully cure. It is advisable to refer to the product instructions for specific curing times.

Can polyurethane sealants be used underwater? 

Some polyurethane sealants are specifically designed for underwater applications, such as sealing swimming pools, fountains, and water tanks. These sealants are formulated to cure and create a waterproof seal even when submerged.

How long do polyurethane sealants last? 

The lifespan of polyurethane sealants can vary depending on factors such as exposure to UV radiation, temperature fluctuations, and the specific application. Generally, they have good durability and can last for several years without deterioration when applied and maintained correctly.

Can polyurethane sealants be painted? 

Yes, once cured, polyurethane sealants can typically be painted over using compatible paints. It is recommended to follow the sealant manufacturer's guidelines regarding paint compatibility and wait for the sealant to fully cure before painting.

Remember to consult the specific product instructions and guidelines provided by the manufacturer for proper application, curing times, and any other specific requirements related to the polyurethane sealant you are using.

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CARLISLE® Construction Materials Ltd.

Adshead Ratcliffe & Co Ltd., United Kingdom
Derby Road, Belper, Derbyshire, DE56 1WJ
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