The timber used for most fascias may come from renewable resources, but how sustainable is it? How much might it cost a housing provider, private or public, to re-paint the exposed timber (eg roofline and windows) of the homes it owns over a period of 35 years?
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Timber must be repainted every 5 years (source: BRE Green Guide) to maintain its protection and reach a service life of 35 years.
PVC and timber fascias cost roughly the same fo install. The BRE gives both timber and PVC a 35 year reference service life. A Reference Service life is based on real time evidence of a material’s lifetime performance. PVC has only been around in construction for 35 years, timber for considerably longer.
The BRE estimate the Service Life of a dwelling to be 60 years. Swish estimates that its PVC cladding and fascias are capable of lasting longer than this.
Housing providers procure maintenance services in different ways, some as one off contracts and some as part of long term general maintenance agreements.
Which ever way maintenance is paid for there is a cost. The money paid could be better used to provide insulation, invest in solar power or other green energy sources.