Denso System Used On Irvine Trunk Main

An ageing water main located near Irvine, Ayrshire, was identified by Scottish Water as needing replacement in 2017

by John Bean | Monday 20 August 2018

Protected with a Denso P1 System
The current pipeline, which supplies over 40,000 customers in the region, was to be replaced with a new 12km stretch of polyethylene pipeline. The contractor are Caledonia Water Alliance.

A Winn & Coales Denso P1 Specification System was selected for the protection of various ductile iron fittings on the project as a result of their products meeting the requirements of the CESWI P1 Specification.

The specifications state that a petrolatum paste (Denso™ Paste) shall act as a primer and cover all areas to be protected. A smooth external profile is then created with the use of a profiling mastic (Denso™ Profiling Mastic) to cover any projections from the pipework. Finally, the profile is spirally wrapped with a protective tape (Denso Tape™) using a 55% overlap.

For extra security on this project, Denso SA PVC Outerwrap™ was used to seal the system and protect the exposed petrolatum tape from UV or any backfill damage.


Andy Stuart
Winn & Coales (Denso) Ltd
+44 20 8670 7511

Monday 20 August 2018 / file under Construction | Engineering | Utilities | Water