INSULATE ROOFS WITH CRUSHED OYSTER SHELLS

“Fishermen have developed a market for reducing, reusing and recycling clam and oyster shells that used to be dumped. They are packaged up and sold bulk for a variety of uses, but crushed shells are used as an additive to paint for roofs. In France, more than 130,000 tonnes of oyster shells are thrown away every year. CRF takes a few tonnes of this waste and uses the outer part of the shell – which is made from calcium – to replace the traditional calcium in its paint. Cool Roof France’s oyster-enriched, thermo-reflective roof paint is applied in three layers. The first two layers make it a durable product which will last for around 20 years. By adding the third layer, the paint is able to reflect 90 per cent of the sun’s rays away from a building. This results in an average temperature reduction of six to seven degrees Celsius.

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