Bradstone, Building Materials Permeable Drainage Aggregate 20mm - Bulk Bag

Coverage(m2) £/m2
( inc. VAT )
( inc. VAT )
Bulk Bag 2.85m2 £45.61 £129.99
Delivery usually within 3-5 days


When laying Bradstone Infilta concrete block permeable paving, conventional MOT Type 1 is not used in the sub-base as it is not free draining, the Bradstone 20mm open graded drainage is used.

In free draining applications, a suitable geotextile should be placed at formation level (overlapping joints by 300mm), below the Drainage Aggregate sub-base. When the sub-base is designed to hold water an impermeable memebrane lining should be used.

The depth of the sub-base will be governed by the strength and type of the underlying ground, but typically you will need to be around 200mm deep on soils of good strength and 500mm in areas of poor soil strength.

It is best to prevent vehicles running on the sub-base during construction if possible, as they will cause rutting in the loose surface. The blocks are restrained in the conventional way with a kerb or edging and provide more than adequate support to traffic.

Laid to a depth of 200mm, 1 Bulk Bag covers 2.85m2

Laid to a depth of 500mm, 1 Bulk Bag covers 1.1m2


Deliveries normally occur between 7am and 6pm. Once your order has been placed you will be contacted and provided with an exact date of delivery.

This vehicle will lower the product to the ground using an electric lift. The pallet of products is then pulled off using a manual pallet truck. It is imperative that the ground that the pallet is unloaded onto is flat and solid. Access may be needed for a rigid lorry (up to 20ft) otherwise additional delivery charges may be made. For larger orders alternative delivery methods can be arranged. Please call our office to discuss any delivery requirements or for clarification.

Our customer services team will advise how to prepare for receipt of ordered goods. Our delivery team are not responsible for any additional lifting or carrying of your goods.

We do not deliver items to multiple addresses.

All full packs and all orders containing at least one full pack will be delivered free of charge*.

Delivery charges for individual units usually have a flat charge of £30. *Delivery is free on orders with full packs except for deliveries to the postcodes AB, BT, DD, GY, HS, IM, IV, JE, KA27-28, KW, PA20+, PH, P030-41, TR21-25 and ZE (please call 0800 032 6306 for a quote).

Delivery will normally be less than 7 days (typically 3-5 working days). Simply Paving will aim to contact you by email or directly by phone within two working days of your order to suggest a delivery date. If the date provided is unsuitable please get in touch and we will re-arrange the delivery date.

For further information please refer to our Delivery Policy.