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Sustainability
Sustainability in action
Learn how Prismo® combines durability and sustainability across products, processes, and projects.
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Knowledge Hub
Everything you need to keep your project moving
The knowledge hub is where Prismo puts practical know-how within easy reach. Access application methods, product sheets, technical and safety data, case studies, leaflets and brochures in one place. Get clear guidance on surface preparation, coverage rates, curing times and approvals, written for contractors, specifiers and teams on the ground. Find what you need quickly and keep your project moving.
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Our products
Bitumen and hot melt
A specialist range of high-performance crack repair, joint sealing, and bridge expansion joint solutions, delivering durable, flexible protection for asphalt and concrete surfaces. Our innovative systems save time and money by preventing deterioration, minimising maintenance needs, and extending the life of roads, runways, and bridges.
Thormajoint®
Our pioneering asphaltic bridge expansion joint system, purpose built to absorb bridge movement while sealing and protecting the expansion gap. By removing the need for high maintenance mechanical parts, it delivers a durable, low-maintenance solution ideal for new builds, retrofits, and replacing worn or failed joint systems.
Overview of bitumen and hot melt
Our hot melt products are designed to withstand heavy traffic, extreme weather conditions, and environmental stress.
Thormajoint® bridge expansion joints
Thormajoint® is the original asphaltic plug joint, developed by Prismo® in the 1970s and trusted worldwide for over 50 years. Seamlessly integrating with the road surface, it accommodates bridge movements of up to 50mm, seals against water ingress, and protects bearings—delivering a durable, low maintenance, and long-lasting alternative to traditional joint systems.
Joint and crack sealing
Our wide range of road repair systems offer a long-term and economical solution for sealing cracks and joints. Designed for durability and quick installation, the range includes CE-marked and BBA-accredited products, helping to keep surfaces safe, reliable, and long lasting—ideal for a wide variety of maintenance and repair applications.
Adhesives for road studs
Our high-performance Stimsonite® Stud Grout provides a secure, long-lasting bond for road studs on asphalt and concrete. Flexible in cold conditions, with excellent flow resistance, it delivers quick installation, outstanding durability, and reliable performance in both temperate and tropical climates.
Bitumen and hot melt
Our bitumen and hot melt product range offers a diverse selection of bridge joints and crack repair products, designed to meet various performance requirements and applications.
Bitumen and hot melt
Multiseal™ 40 N2
A premium product engineered to seal expansion joints and cracks in extreme climate conditions. It is CE marked to class N2 for normal to low extension movement.
It remains effective in temperatures ranging from -40°C to 65°C, offering exceptional flexibility in low temperatures and the ability to withstand extreme heat.
Bitumen and hot melt
Thormaseal™ 1401C N1
A premium product engineered to seal expansion joints and cracks in extreme climate conditions. It is CE marked to class N1 for high extension movement.
It remains effective in temperatures as low as -25°C, offering exceptional flexibility in colder climates and superior recovery properties.
Bitumen and hot melt
Thormaseal™ Tropical
Specifically engineered to seal expansion joints and cracks in hot, tropical climates. It is also fully pumpable which reduces erosion in equipment.
It offers good extension of service temperatures between 0°C to +50°C and resistance to deformation in temperatures reaching 60°C.
Bitumen and hot melt
Prismoseal®
A highly-popular, versatile bituminous sealant used globally, which is suitable for temperate climates, providing long lasting protection and durability.
This product is ideal for the sealing of horizontal expansion joints on asphalt and concrete carriageways, motorways, runways, and other pavements.
Have a question? We’re here to help
Contact our friendly team for quick help and answers to all your questions. Whether you need information, guidance, or support, we’re always happy to assist!
FAQs
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Are your bitumen products compatible with both asphalt and concrete surfaces?
Yes, our range of bitumen products is formulated for compatibility with both asphalt and concrete substrates, ensuring strong adhesion and long-lasting performance.
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Can your sealants be used for airport runways or industrial pavements?
Yes, we supply heavy-duty formulations designed for use in high-stress environments such as airport runways, freight terminals, and loading docks.
Speak to our team to find out more.
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Do I need special tools to use your bitumen products?
Some products require heating equipment or specific application tools, while others are ready to use straight from the container.
Each product has a detailed application method to guide you through the correct process. You can download all our application methods from the knowledge hub for easy reference.
For application of Thormajoint® contact us to be an official approved installer.
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Are your products environmentally-friendly?
We’re committed to improving sustainability across our product range. For example, our Thormajoint® bridge joint system incorporates recycled tyres in its composition, helping reduce landfill waste while delivering durable, high-performance results.
Many of our bitumen products are also long-lasting, which reduces the need for frequent reapplication and waste.