Another form of secondary drainage is performed with a gravel band drainer.  The gravel band drainer cuts a channel in the turf 100 to 350 mm deep, 25 mm wide.  This channel can be filled with a variety of back fill material, via a hydraulic vibrating gravel box, and then a wheel is rolled over the surface to compress the fill and leave the turf flat.  The channels link into the primary drainage system enabling efficient water disposal.

We use a Shelton Gravel Band Drainer and use it to backfill with gravel or in some cases Lytag which is a very efficient hydro-conductor.  Where conditions allow, surfaces are playable within hours from the gravel bands being installed.