Installing Flagstone Over Concrete Slab

Cut flagstone is easier to work with but is more expensive.

Installing flagstone over concrete slab.

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. 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. 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.

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. The flagstones are placed in the bed of mortar and then the joints are filled with either sand or additional mortar or colored grout. 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. Before you begin make sure your concrete is properly sloped and doesn t puddle.

These are the easiest type of flagstones to use as they install similarly to ceramic tile. Fluctuating soils soil erosion and maturing root systems should be the only concerns one has when deciding to to pour a concrete slab. Prepare the cement walkway for the flagstone. Remove broken pieces of slab brush off debris and use a level to ensure that the cement sections are flat and even.

Keep this drainage slope in mind when adding your pavers and make sure the edge that drains water stays low and permeable. Called soldier rows these outside bricks create a stable frame for the inside pavers. 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. This page will focus on the installation of the random flagstone.