EXTERNAL ENVELOPE
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a challenging environment, a softwood fascia board is unlikely to survive more than a decade, especially if it doesn’t receive regular maintenance including re-painting at least once every three years or so.
Cellular PVC – the material of today
Cellular PVC is probably the most efficient material for use at the roofline because it costs roughly the same as timber to install, requires no maintenance and so suits the exposed and inaccessible location at the eaves. Most importantly, especially from any landlord’s point of view, when it is installed correctly it will probably last the lifetime of the dwelling. As far as roof void ventilation is concerned, the preferred method these days is to use a continuous venting unit that sits on top of the fascia board and supports the roofing felt and the lower row of tiles. This method does away with slots or ugly vent discs set into the soffit board. On a very practical note, Cellular PVC
roofline systems are also good at providing both visual and physical support for the other essential components in rainwater management – guttering and downpipe systems with all the attendant bracketry and fixings.
Co-ordinating finishes
Cellular PVC is an extruded, foamed material with an integral smooth and durable skin. A wide range of colours and foil finishes are available, providing a considerable degree of flexibility in co-ordinating with popular window and door styles as well as coloured rainwater management systems. Cellular PVC can be cut, drilled, nailed
and routed using conventional tools. It is light to handle, easy to fix and does not require any painting or subsequent treatment after installation. Cellular PVC Roofline products from my
own Company, Swish Building Products, also represent an environmentally responsible use of plastics. Not only do they not contain CFCs, lead or cadmium, which are consid- ered harmful to the environment, but the Company itself has also taken huge strides over the last decade in reducing its CO2 footprint and use of water in manufacturing. Cellular PVC also has a very long-life span and when replaced, can be fully recycled.
Complementary Rainwater Systems
Swish also manufactures a complementary range of rainwater management systems –
guttering, fall pipes and attendant bracketry – all designed to efficiently collect and dispose of rainwater run-off from building roofs. Swish standard rainwater systems all contain a high proportion of recycled materials and the Company is the only UK plastics manufacturer to be awarded BES 6001 Responsible Sourcing Certification for both their roofline and rainwater products.
Swish standard rainwater systems are made with a high proportion of recycled materials. Swish is the only UK plastics manufacturer to be awarded BES 6001 Responsible Sourcing Certification or both their roofline and rainwater products.
Dave Osborne is Technical Manager
for PVC roofline and rainwater systems specialists, Swish Building Products. For more information on Swish Cellular
PVC roof line products, contact Swish Building Products.
01827 317 200
www.swishbp.co.uk
Swish Cellular PVC is an extruded, foamed material with a smooth and durable skin.
ADF OCTOBER 2017
WWW.ARCHITECTSDATAFILE.CO.UK
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