Cold Melt® – when it’s raining cats and dogs
Battersea Dogs and Cats Home in London, the best-known animal sanctuary in the world, is currently undergoing the biggest development in its 154-year history – a £5million scheme delivered by main contractor, Sir Robert McAlpine.
It includes an innovative new waterproof membrane – Cold Melt® from Proteus – a seamless application designed to work in harmony with the roof infrastructure and so tough that it has been BBA certified to last for the lifetime of the building.
The development will bring the charity’s existing buildings and facilities into the 21st century and will include a new build, state of the art veterinary hospital with three operating theatres, a laboratory and X-ray suite and recovery wards.
As an integral part of this transformation was the built up roofing system of 1,200 square metres, specified by Jonathan Clark Architects to improve thermal efficiency, create visual interest and support inner city wildlife whilst at the same time offering a high performance solution in a complete service package.
Applied by Proteus Licensed Roofing Contractor, Allard Construction, a 5 layer built up system was employed to offer a bespoke specification tailored to the client’s needs and budget and offering the versatility and sustainability of green roofing that leads the way in the construction industry.
The built up system from Proteus consisted of a layer of Cold Melt®, Proteus’ own innovative, cold-applied liquid membrane, over which an insulation layer of Pro-Therm XPS was laid. A separator sheet of Proteus Low-K was then added followed by an attenuation mat and then three different finishes in three different areas of the roof – paving slabs, a green roof and decking.
The attenuation mat was of vital importance in the roofing system to help to reduce the flow of water into the drainage outlets as the local Victorian sewers are out of date and unable to cope with the heavy rainfall we now experience.
Working in cities always presents a number of safety issues that need to be addressed. Proteus’ liquid applied systems are cold installed and therefore negate all the elements of fire risk when working in confined spaces. Of particular importance was the low odour that Cold Melt® exhibits, meeting all the health and safety criteria necessary especially when working in close proximity to the dogs and cats home’s residents.
Cold Melt® incorporates recycled rubber-crumb and other organically grown products and when covered, creates an elastomeric, seamless and cold applied membrane which has a life expectancy longer that the design life of the building on which it is installed.
With the help of Proteus’ built up roofing system, Battersea Dogs and Cats Home can continue to provide a waterproof roof over the heads of abandoned and abused pets since it first opened its doors in 1860 and on into the 21st century and beyond.