ThormaJoint - the proven bridge expansion joint

The first choice for bridge engineers seeking eEectiveness, economy and reliability.

Prismo offers the original proven and reliable asphaltic plug joint system, Thormajoint™. This bituminous bridge expansions system is a durable, weather-resistant joint that is practically indistinguishable from the road surface. This system reduces the need for excessive overhaul, by offering a cost-effective solution that extends the life of bridges and bridge joints. Thormajoint™ is a trusted brand that has proven its reliability, durability, and cost-effectiveness over more than 20 years.