Installing Flagstone Over Concrete Slab

To install flagstone in this method wet mortar is applied either directly on a subbase of compacted gravel and sand or to an existing concrete slab.

Installing flagstone over concrete slab.

Keep this drainage slope in mind when adding your pavers and make sure the edge that drains water stays low and permeable. Prepare the cement walkway for the flagstone. The biggest problem with laying pavers over a concrete slab is the inability for water to drain through the blocks and down into the earth. Flagstone its beautiful and rustic appearance makes it the perfect choice for homeowners that are looking to build a new patio driveways or walkway or just want to update an existing patio.

Fluctuating soils soil erosion and maturing root systems should be the only concerns one has when deciding to to pour a concrete slab. Rectified flagstones are those that have been machine tooled to a regulated thickness and size. Installing pavers over concrete enables you to get creative with the look and style of your patio. Remove broken pieces of slab brush off debris and use a level to ensure that the cement sections are flat and even.

Lay bricks around the concrete slab s outside edges with brick narrow sides facing outward. This page will focus on the installation of the random flagstone. Before you begin make sure your concrete is properly sloped and doesn t puddle. While it s recommended that you lay a 4 to 6 inch base layer of pea gravel or sand beneath your flagstone path do it yourselfers laying flagstone over cement generally skip this step.

Because you already have the concrete patio you are eliminating the often time consuming task of having to pour a slab of concrete before laying your stones. These are the easiest type of flagstones to use as they install similarly to ceramic tile. Since they are uniformly sized you can spread an even layer of thinset mortar on top of the concrete and install the flagstones like tiles. Cut flagstone is easier to work with but is more expensive.