Redhills Primary School in Exeter is safe from leaks and more energy efficient thanks to the installation of a warm roof and waterproofing system from Kemper System.


The existing three-layer felt roof on the 30+ year old building was widely failing and needed to be replaced so Devon County Council’s appointed consultant, NPS, specified Kemper System’s solvent-free 2K-PUR cold liquid applied system along with the company’s Kempertherm PIR insulation board.


Main contractor, Skinner Construction Ltd, appointed Stormforce Roofing to install the roofing system, in a project that was carried out both during the school holiday and within term time.

Andrew Sturgess from Skinner Construction Ltd explains: “Obviously having children on site while the work was on-going presented some health and safety challenges. The Kemperol 2K-PUR system was the ideal choice in this regard: as a cold-applied wet-on-wet system it is quick to install and avoids the need for any hot works on site.  What’s more, the choice of the solvent-free product which is based on a castor oil formulation means that there are no unpleasant odours during or after the project, allowing staff and pupils to get on with school life on a business-as-usual footing.”


Stormforce installed the new roofing system on top of the old substrate with minimal preparation, effectively recycling it as a vapour control layer.  The insulation board was cut to shape and laid directly onto the existing roof before installation of the Kemperol 2K-PUR system in a single process.  The result is a monolithic, seamless, durable yet flexible waterproof membrane which can not delaminate and will keep Redhills’ children dry for at least the next 25 years.


Stuart Hicks, marketing manager at Kemper System said: “Kemperol 2K-PUR is the first solvent-free, odourless, cold liquid applied, wet-on-wet waterproofing system available in the UK.  This makes it ideal for school roof refurbishment, which is traditionally carried out during school shutdown periods, or for construction projects where environmental considerations are important or where buildings are occupied and work needs to continue without the disruption caused by the heavy fumes and strong odours from solvent based products.”


%d bloggers like this: