Placing unit pavers on a subslab

Where you need a stable, permanent pavement, one solution is to mortar individual unit pavers (or simply pavers) such as brick, paver blocks, flagstone, or tile over a subslab of poured concrete. However, this method increases your cost and also the environmental impact because that concrete has to come from somewhere. Plus, once you mortar those puppies down they can't easily be reused in the future.

Make your subslab 4 inches thick, and give it a rough broom finish that you'll stick the pavers to with thin-set mortar mix. If you're pouring onto an expansive soil (gooey clay that moves in response to changes in soil moisture), use a sand subgrade under the subslab, and install a grid of #3 steel rebar (steel rod used to strengthen) at 24 inches on center to keep the subslab from cracking.

^ If your soil is stable, you could leave the rebar out, which would make the y^jL subslab reusable as urbanite if the pavement is ever taken up (rebar makes ■ VQJ ■ reuse nearly impossible). Without the rebar, you may get some cracking, but perhaps that's a small price to pay to improve the integrity of the project.

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All You Need To Know About Organic Gardening

All You Need To Know About Organic Gardening

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