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Our 5/20mm Limestone SUDS is a premium, primary quarried aggregate designed specifically for use within Sustainable Urban Drainage Systems (SUDS). This open-graded stone is meticulously washed and graded to ensure it contains no “fines” (dust), creating a highly permeable sub-base layer that allows surface water to drain away naturally and efficiently.
Depending on your project’s engineering specification, it functions as an ideal open-void sub-base or laying course for permeable block paving, porous asphalt, or pervious concrete.
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