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20-40mm Roofing Pebbles - Available Online in Bulk Bags or Loose by the Tonne with Nationwide Delivery
20-40mm Roofing Pebbles - Available Online in Bulk Bags or Loose by the Tonne with Nationwide Delivery
![]() 850kg Bulk Bags including delivery including delivery from |
![]() Loose Tonnes Obtain a bespoke quote for loose delivery |
![]() 500g Sample including delivery including delivery from |
Take a metric tape measure and measure the length, width and depth of the area to be filled. The length and width measurements should be recorded in metres and the depth in millimetres. Now take these figures and enter them into the quantity calculator to reveal the approximate quantity required for your job.
Remember:
1 metre is equivalent to 1000mm or 100cm
1 centimetre is equivalent to 10mm
Naturally rounded 20-40mm Pebbles shaped over thousands of years by aquatic erosion. These pebbles are ideally suited for use in green roof systems, providing effective protection for underlying membranes against sun exposure, hail, and general weathering. In addition to their protective qualities, they serve an essential role in ballasting flat roofs to resist wind uplift and facilitate efficient drainage. Mainland Aggregates Ltd pride ourselves on being one of the leading suppliers of 20-40mm Roofing Pebbles in the UK.
Green roof systems, general drainage,
Loose or Bulk Bags
10 Tonnes Loose or 1 Bulk Bag
1 x Bulk Bag will cover approx 10sqm at 50mm depth
850kg per bag
Approx 1.7 tonnes per cubic metre.
Yes

Complete the form to receive your free, no-obligation quote. We aim to respond within 1 hour during business hours.