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Why do buildings have gravel on their roof?

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The purpose of gravel on a flat roof. On many flat-roof (low-slope) commercial buildings, it's common to see gravel on top of the roof. Have you ever wondered why contractors install gravel on flat roofs? read more

A flat roof with a membrane that's adhered does not need gravel or rock. The only purpose of rock on a membrane roof is to hold the roof system down. Gravel surfacing on a asphalt built-up roof system is embedded in asphalt above the felt plies. This surfacing keeps the felts protected from the sun's UV rays which damage the felts over time. read more

Gravel Roofs are also know as composite roofs (to a certain degree) and they are an affordable roof material used to do large scale projects. Buildings often need to stay within budget an this material often works to the buildings favor by keeping costs low and maintenance at a bay. read more

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