Flat Roof Repair
Occupied office buildings
Click image to enlarge.
- Project Co-operative Building, London
- Roof Area 1500mē
- Substrate Asphalt
- Product Kemperol 2K-PUR
- Requirement Following an upgrade to the building services at this London office building, new air conditioning plant was installed on the roof which meant the existing asphalt waterproofing needed to be renewed, a timely refurbishment as failures had started to occur at the upstands and penetration details. As a high rise building in a busy city location, removal of the existing roof substrate would have proved costly and disruptive to tenants, whilst the proximity of air-conditioning plant to the repair area meant fume-emitting (solvent-based) materials would cause temporary evacuation or shutdown both options the Project Manager was hoping to avoid. Torch-applied (bituminous) repair had been discounted from the start because of the risk of fire and fumes. With the numerous protrusions and penetrations presenting potential repair weakspots, this was a difficult roof to work on, demanding a system that could minimise the risk of technical failure or operator error and easily handle the complex detailing.
- Solution Kemperol 2K-PUR was chosen for its proven performance (now BBA certified) whilst also being the only solvent-free formulation available in the UK. The method of application a resin-impregnated reinforcing fleece that could easily be cut and formed around the protrusions, creating a seamless membrane when cured that was permanently elastic reassured the Project Manager that this would be a long-term solution despite the demanding environment a confidence strengthened further with the knowledge that Kemperol can only be applied by fully trained and certified contractors, Being solvent-free there were no noxious fumes to inconvenience tenants and no need to disable the air conditioning plant. And because Kemperol 2K-PUR can be applied onto almost any existing roof material, the cost and inconvenience of substrate removal was also avoided, further helping to minimise the repair period.
