Flat Roof Gravel Size

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Flat roof gravel size.

Are there any specific requirements for the gravel size type colour etc that we should keep in mind when we re buying a bag. There are different types and weights of gravel used on flat roofs for these purposes. There are so many tipes of gravel out there now all different colours and shapes. Their is silver fire proof paint out there now thats is painted on the roof you might get this fire proof paint in black or other colours.

To protect the underlying layer of roofing materials as is the case with built up roofs burs. It also provides protection from foot traffic. The idea of putting gravel on flat roofs was to stop sparks landing on the roof and starting a fire. Can i use pea shingle size 10 15mm does anyone know what sort of area one of the bags from a diy store would approx cover.

Thats if you dont want to use stone if you want to use pebbles. Gravel is used on flat roofs for two reasons. Roof gravel provides a protective layer to flat roofs reducing the weather damaging effects from uv rays and heavy snow hail and wind. Gravel to protect built up.

We recently had the building regs inspector around to sign off the extension we have had built. He told me that i needed to lay some gravel on the flat roof. We need to top up the gravel in one spot on our flat tar and gravel roof.