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Glebe Manor – ground stabilization beneath unit interlocking pavers. Unit interlocking pavers are a designer go-to product

Glebe Manor – ground stabilization beneath unit interlocking pavers


The paving stones come in a multitude of colors, sizes and finishes and can be used for various applications from pathways, tree root protection, driveways and sidewalks, just to name a few.

There is an underlying, no pun intended, problem with unit pavers that is more common in cold weather areas. There is an inherent risk of shifting, lifting and heaving of the stones due to fluctuations in temperature and resulting frost heave. There are many municipalities that have forbidden the use of unit paving stones due to potential tripping hazards.

The designer for this project used the Ecoraster grid to stabilize the base beneath the unit pavers.

The grid segments lock together eliminating the risk of movement from the pavers. The grid, when installed acts as a floating and permeable floor beneath the stones. The strength is similar to that of concrete however the Ecoraster grid is much easier and faster to install and will not crack or be effected by cold weather.

The contractor in this case was able to reduce his base depth considerably. He installed the grid on top of a 4-inch base filled with clear, drainable aggregate. The grid was then filled with small, clear, angular stone and the unit pavers were placed upon a levelling course of clear bedding. The installation was faster than conventional methods and the risk of heaving, shifting and lifting of the pavers is eliminated.
Installed in November 2015.