6mm granite roof chippings are small-sized stones that are specifically designed for use in roofing applications. These chippings are made from natural granite material and are approximately 0-6mm in size.

6mm Granite stone chippings, generally used as flat roof gravel on roofs constructed of traditional roofing felt.

This aggregate is typically dark grey in colour but this will vary due to its own natural source.

Application of granite flat roof gravel stones

It is advisable to bond all the perimeter areas with either hot bitumen or cold gritting adhesive.

It is recommended to use a Cold Gritting Adhesive around the perimeter area at least. This will help to secure the chippings to the roof area and reduce the chance of the chippings being blown or washed over the perimeter edge of the roof.

Other uses for granite stones

Granite stones are often used in external works, garden projects. When mixed with shingle & sand they can be used in drainage, as a sub-base material for paving or for decorative purposes around the lawn and garden.

Available alternatives to granite stone chippings

We also stock 6mm Limestone chippings, should you require a lighter colour.

Delivery information

This item is available for click and collect at our depot and for direct delivery by our courier network partners.

Product information

Please note that this a natural product and so the colour, shape and size can vary. The images are representative only. The chippings will be a mix of sizes up to 6mm in general. These can also be wet once bagged and so you may get wet chippings in the bag. 

If you require further assistance please contact our professional team at Southern Roofing supplies on 01634 869823 - shop@southernroofingltd.co.uk or by using the live chat service.

Why put gravel on flat roofs?

There are four main reasons for putting gravel on a flat roof:

1) The weight anchors the felt membrane, acting as ballast and preventing it from lifting in high winds

2) The stone chippings afford some protection to the waterproof membrane, should people or animals walk on it

3) They offer protection from the weather. Mostly from damage from the sun in the Ultra Violet (UV) rays, but also from severe rain and hail

4) Gravel traps any debris that might end up on the roof - such as leaves & twigs - and be washed into the gutter & drains, thus preventing a blockage
 

What are the best gravel stones for a flat roof?

The best gravel stones for flat roofs are approximately 6mmin diameter, with rounded edges, so they do not pierce the membrane when walked on. Generally this includes granite , limestone & pea shingle.

What are the maintenance recommendations for flat roof gravel?

Felt and bitumen based flat roofs should be checked at yearly intervals for any defects , such as cracking. Additionally, you should check for any bare patches where chippings have washed away, and replace them.

It is also advisable to check gutters, as loose gravel that's been washed away, can often end up causing blockages.

Can you put stone chippings on EPDM rubber roofing?

Yes it is fine to put gravel chippings onto EPDM rubber roofing if you wish, but it is not needed. If you do, it's advised to use a geotextile covering between the membrane and the gravel chippings.