Iconic London church sings the praises of Kemper System

Iconic London church sings the praises of Kemper System

A popular East London church has regained its post-war glory thanks to the solvent-free and odourless liquid waterproofing solution from Kemper System.

The manufacturer’s Stratex Warm Roof system and Kemperol 2K-PUR liquid waterproofing solution was specified to refurbish the Calvary Charismatic Baptist Church in Poplar.

The church, which was experiencing severe water ingress due to the failure of the existing single-ply and felt roof system, was built in 1951 as a ‘Live Architectural Exhibition’, part of the Festival of Britain. The building is a heritage site with an unusual design to the structure of the roof.

The original single-ply specification was changed to Kemperol 2K-PUR by architects, A&RME, to provide a liquid waterproofing solution capable of addressing the complex design of the building with its concrete gutters and columns, as well as a number of round rooflights - meaning Kemper System’s seamless waterproofing solution was ideal for the level of detailing required.

The Stratex Warm Roof system, comprising Kempertherm insulation and Kemperol 2K-PUR cold applied liquid waterproofing membrane, was quick and easy to apply, minimising possession times on site and allowing the community to enjoy the church at its best once more.

Roofing contractor, Capital Roofing Co Ltd of Blackheath in Greenwich, installed the roof system which involved application of a primer and vapour control layer, followed by a hard-top insulation board between the concrete beams and upstands which provide the main support for the building.

The Kemperol 2K-PUR system was then installed on the flat roof area, providing a seamless membrane around the skylights and the base of the concrete upstands.

Commenting on the project, Chris Shulver at Capital Roofing Co Ltd, said: “This was a challenging refurbishment not only because the church is a heritage site, but a long-term waterproofing solution was needed following many failed refurbishment attempts in the past, using alternative waterproofing systems. We have installed Kemperol many times before and its versatility made it the ideal choice.”

“A temporary roof had to be erected prior to installation of the system to help keep the building as watertight as possible. Thanks to Kemperol’s quick and easy application, we could tackle the high level of detailing required on site with ease. It also decreased the time required for the temporary roof because of the single, wet on-wet application process that doesn’t require the base coat to cure before subsequent site visits and further coatings are applied, unlike wet-on-dry systems.”

Steve Henderson, technical manager at Kemper, added: “We worked closely with Capital Roofing and architects, A&RME, to develop a specification which met the needs of the project and we are delighted with the result.”

“The Stratex Warm Roof system and Kemperol 2K-PUR liquid waterproofing solution was a perfect choice for the church, and its odourless solvent-free qualities were a bonus for the contractors and congregation alike.”

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Kemper System

Kemper System

Kemper System is the company behind KEMPEROL®, globally renowned liquid resin waterproofing systems for the long-term protection of roofs, critical structures and buildings. Including green roofs, eco-roofs and warm roof build-ups.

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