Hastings Checker Block®, approved for H-20 loading, gives you the strength of concrete in areas where you wish to maintain a grassy look including overflow parking, service roads, tree pits, and fire lanes. It is also ideal for stabilizing embankments along streams, rivers, and lakes.
Checker Block® offers a ready solution when used as a tree grating. It provides high stability while offering maximum water percolation.
Checker Block® consists of steel-reinforced, waffle-like configurations which create voids for grass or crushed stone. It features a greater ratio of grass (almost 70%) to concrete than any similar material thereby improving aesthetic and environmental qualities.
Checker Block® is manufactured in Southern California and Long Island, NY in order to facilitate shipments throughout the United States.
Checker Block® also enhances surface drainage eliminating costly underground systems. Grass can easily be cut by standard lawn mowers.

A. Installation Procedures:
Base for Pavers shall be either undisturbed earth or fill compacted to 95% maximum dry density as determined by the Modified Proctor Test ASTM D- 1557-64 + (plus 4% or minus 2% optimum moisture). Remove from the setting bed rock or other materials which would create uneven bearing. Place sand in a
2" compacted layer over the base to present a true and even grade over entire area to receive pavers.
Set pavers and line up to abut.

B: Void Filler (By Others): Thoroughly mix fertilizer and other additives with the topsoil and spread loosely to fill void in Pavers. Water with a mist spray to settle. Add additional topsoil mix to bring the topsoil flush with top of the Paver. Seed at slightly less than normal rate and mulch. When grass is 2 1/2" high, cut to 13/4". Crushed gravel can be substituted for seeding and topsoil.