CASE STUDY
SEALING TECHNIQUES FOR IRREGULARLY SHAPED CULVERTS
Sealing & Waterproofing
Project Data
| Location | Johannesburg |
| Products | Denso Primer D™, Densotherm HD Tape™, Denso™ Joint Sealer, Premseal 100™, Denso Bitumen Mastic Strips |
| Date | April 2025 |
PROJECT DETAILS
Due to the irregular shapes and installation constraints of culverts installed on a main road, a durable waterproofing and sealing system was required to address the gaps created between them.
Denso recommended Denso Primer D™, combined with Butyl mastic and Densotherm HD Tape™, as the most suitable system for sealing the internal joints of the culverts.
For the external sections, with flatter surfaces, Denso proposed the Denso Premseal 100™ tape system. Denso Premseal 100™ is a durable sheeting made from cross-laminated, orientated high-density polyethylene, coated with a strong adhesive polymer-modified bitumen compound.
The system has been applied to both the inside and outside of the culverts, ensuring a complete seal on both sides. The system’s strong design accommodates movement caused by high traffic, making it durable against such impacts.
Primer D™ & Denso™ Joint Sealer applied for all new concrete bases placed forward (external section).
Primer D™ and Denso™ Joint Sealer being applied on the inside of the culverts that have already been stacked.
Primer D™ & Denso™ Joint Sealer applied for all new concrete bases placed forward (external section).
