Flat Roof Gravel Size

We recently had the building regs inspector around to sign off the extension we have had built.

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. Gravel to protect built up. To weigh down or secure the roofing material as is the case with single ply flat roofs. We need to top up the gravel in one spot on our flat tar and gravel roof.

To protect the underlying layer of roofing materials as is the case with built up roofs burs. There are different types and weights of gravel used on flat roofs for these purposes. 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. Email save comment 2.

Our roof gravel is available for delivery in tunnel lift bulk bags allowing an easy method of transporting the gravel onto a roof using a crane not provided. Gravel is used on flat roofs for two reasons. Thats if you dont want to use stone if you want to use pebbles. 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.

Roof gravel provides a protective layer to flat roofs reducing the weather damaging effects from uv rays and heavy snow hail and wind. Built up roofs or burs also called a tar and gravel roof is a well established and popular style of flat roof that is made up of alternating layers of roofing felt or fiberglass and asphalt that is applied with heat which combine to make a long lasting sturdy roofing system. He told me that i needed to lay some gravel on the flat roof.