To avoid this not only do you need a concrete base thick enough to not crack under the weight of foot traffic but also a well formed layer below the concrete.
Flagstone thickness over concrete.
How to estimate flagstone.
We used cement pavers concrete patio blocks for the border and clay pavers for the field.
Length x width square footage 1 ton of flagstone at an 1 thick covers 100 ft.
Solid one piece bluestone or other natural stone blocks 6 in.
What kind of mortar to lay flagstone over concrete.
Multiply the length by the width to find the area of the space to be covered with stone.
Choose material and color.
As you pour the concrete pull the 6 x6 concrete wire mesh up into the concrete or place small pieces of flagstone under the concrete wire mesh prior to pouring so the wire mesh is approximately 2 off the ground.
Thick can be installed as complete steps.
If the length of the patio was.
The ones that will be laid over the strong concrete patio can be only one inch thick or.
A difference of more than 3 4 in.
If your laying it on dirt or gravel no thickness will save you from cracks in the mortar.
Figure area and amount of stone.
Do not pour concrete if it is to soupy it should be fairly stiff but workable.
That thickness difference will allow for a bed of sand under the field.
The flagstones that you are laying over the enlarged sand base should be about two inches thick for strength.
Determine what the maximum thickness is allowed for cabinet elevations and door sills.
If it concrete you are laying the flagstone over and you re bedding it in mortar it makes no difference how thick the flagstone is.
Prepare sub floor with wonder board or concrete.
1 mark the area for the walkway.
They are more difficult to install.
Ask an assistant to hold one end of a measuring tape at one end of the area to be paved.
Extend the tape to one end of the area to be.
If you can t find thick pavers you like consider retaining wall cap blocks for the border.
They are comfortable using dribond up to 1 2 of an inch if that helps achieve your leveling goals.
Flagstone or bluestone could be used as a veneer over concrete steps that are in sound shape and can allow for the extra 2 inches that the bluestone veneer will add.
That being said the minimum thickness is 1 4 inch thick which is the recommended thickness for a standard project.