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London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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Howard
JonoMarshall
Yep, continuous background ventilation with 98% heat retained. No need to punch holes in the external walls (100mm PIR).
We'll be well beyond the performance of an average new build at around £1k materials and many days of faffing! Should pay for itself in ~2 years.