To ornament an existing patio or path you can also cover a pre existing concrete slab with flagstones using the mortared flagstone technique.
How to lay flagstone on concrete porch.
A flagstone walkway dresses up a garden or lawn area and provides additional texture.
You cannot use normal thinset mortar with natural flagstones because of their varied thickness which means a bed of sand and concrete is required to cushion the stones and leave the finished surface uniform and flat.
In order to install flagstone patio with the help of a mortar go through the step by step guide mentioned below carefully.
Prepare the cement walkway for the flagstone.
You may start laying stone as soon as the concrete is hard enough to walk on.
However if the stones are not installed with a good solid base.
Installing a flagstone patio or path can give your landscape design a huge boost and really impress your guests or customers if you happen to be a pro.
Remove broken pieces of slab brush off debris and use a level to ensure that the cement sections are flat and even.
Pressure wash the flagstones.
They are more difficult to install than regulated flagstone and require significantly more physical effort.
Start in one corner.
Mix enough cement to lay these stones.
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.
Dry laid flagstone simply means that the flagstone pieces are placed on a bed of sand and gravel.
Wash all stones to make sure all quarry dust is off.
In this case you can skip the excavation stage and just work on top of the slab.
It is recommended that a patio or walkway base be at least 3 deep then filled with a layer of compacted gravel covered with coarse sand.
Now the top of the concrete slab is 2 below the finished grade and ready to lay flagstone.
Joints over a concrete base are also typically mortared.
For the mortared flagstone start the process with a reinforced concrete base that must have the proper slope for drainage.
How to lay a flagstone walkway using concrete.