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Grade D Sand

Grade D Sand

Washed Treepit Subsoil

A medium/coarse washed sands used in the base of tree pits for optimum drainage.


In order to move the water away from the base of the tree pit we would recommend a layer of a washed medium coarse silica sand. Our Grade D Sand drains at around 470mm per hour and is perfect for laying in the bottom of your tree pit in both Soft & Hard Landscaping situations. We have other sands available if this does not suit your specification.

Technical Data

Permeability: 484 mm/hr
pH: 6.4
Total Porosity: 35.1
CBR (Top): 18
Medium Sand: 54%


icon-technical-document-alt-normal-text 19-7885-SS - Bourn...