Alpha Flow Traditional Multi Size Tumbled Sett Paving

Brett Alpha Flow permeable paving with tumbled edges provides a durable, aesthetically pleasing solution for a wide variety of environments.

Alpha Flow is compatible in colour and style with the full Brett block paving range.

Key Information

• Manufactured and tested to BS EN 1338: 2003
• Install in accordance with BS 7533
• Surface permeability 3386 mm/h when tested to BS DD 229: 1996
• 3 standard colours available; others made to order
• 3 plan sizes available
• 2 thicknesses to suit various trafficking requirements
• Alpha Antique circle packs available (please note that these are not permeable)
• Complementary kerb range available
• Complementary permeable aggregates available

Product Specification

Add AG/BR/CL to specify colour. For example, the code for an 80mm thick large block in Autumn Gold (AG) would be NLAFL80AG.

Product Code Thickness
Plan Size
per m²
Area (m²)
per pack
No. per
Pack weight
Small NLAFS60 60 105 x 140 68 10.32 702 1320
Medium NLAF60 60 140 x 140 51 10.35 528 1260
Large NLAFL60 60 210 x 140 34 10.35 352 1260
Small NLAFS80 80 105 x 140 68 7.50 510 1200
Medium NLAFM80 80 140 x 140 51 7.53 384 1220
Large NLAFL80 80 210 x 140 34 7.53 256 1220

All Alpha Flow products are ex stock. Other colours made to order.


Additional Information

For even more information why not visit our Knowledge Hub?

Brett Landscaping partner with NBS to provide complete NBS Plus product listings to help specify our products into your next project. Simply select, copy and paste the relevant NBS Clauses below into your document using standard web editing tools.

We are also working with The NBS to provide a full suite of BIM objects for our products within the National BIM Library. Any of our BIM objects can be accessed via the National BIM Library and imported into a variety of commonly used BIM environments.

Please use the links below to access this information.

Generating bespoke permeable pavement designs for SuDS applications. PermCalc is a powerful software tool to help paving professionals design cost effective permeable pavement solutions for SuDS applications quickly and easily.




All Brett Landscaping products have been extensively tested and proven to conform to the relevant European Standard(s), where they exist ensuring that they are safe to use and fit for purpose. If you want to obtain a copy of the CE Certificate or Declaration of Performance (DoP) relating to the Brett products you have purchased please click here and enter the product name into the relevant field.

Should you have any questions regarding these certificates, or the technical specification for any of our products, please contact the Brett Landscaping Technical Services Department by e-mailing or calling 0345 60 80 579. Please note – CE certification is not required for any materials where there is no harmonized European product standard available.


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