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Flagstone Patio – How to build A perfect patio

Flagstone patio are exquisite, yet they nevertheless give the area a natural feel that brick or cement cannot. They may also be more lasting and require less upkeep to return. There’s no need to worry about rot like there is with wood patios or decks, and unlike cement and brick, they look better worn and stained.

Table of Contents

Essential Tips to Build a Flagstone patio

Ground granite is the best option. It behaves similarly to cement in that it does not track into the home and does not escape from fractures. It also provides excellent weed control as a bonus. 

Ground granite also outperforms all other materials regarding heaving and displacement. Crushed granite is typically less expensive than pea gravel or different types of Stone. 

Local quarries, granite processing factories, and compost yards may have crushed granite available for free. It is beneficial to shop around.

Building Your Flagstone Patio: Supplies you will need.


  • Grass (preferably crushed granite)
  • Sandbags (course, especially recommended for paving)
  • Cobblestone (the thicker lasts longer)
  • A few 2×4 boards will suffice for the project. O, you can also use metal or plastic edging.
  • Biodegradable ground marking spray paint o Landscaping cloth
  • Stone or plastic landscape edging

Tools For Flagstone Patio

  • water and hose 
  • Chisel 
  • Mallet 
  • Gloves 
  • Safety goggles 
  • Wheelbarrow 
  • Flat spade 
  • Round shovel 
  • Metal rake 
  • Level 
  • Leveler 
  • Tamper 
  • water and hose 
  • Chisel 
  • Mallet 
  • Gloves 
  • Safety goggles (wear when breaking Stone)
  • Boots with steel toes (protection from falling objects)
  • At least one assistance 
  • A shop broom and a light-duty broom

To begin, measure your patio area and go flagstone shopping. Make sure you buy enough to thoroughly pave the site, plus a little extra just in case. 

According to your calculations, you’ll need enough sand and gravel to fill in for at least double the depth of the pavers. This step implies you’ll need to dig 6 inches and add at least 2 inches of gravel AND 2 inches of sand if you’re using 2-inch stones. 


If you live in an arid region, such as a desert, or if your soil is already granite or pure sand, a foundation with a depth of 2 inches should suffice.

It would help if you also chose the shape, depth, and style of your pavers and your patio. Flagstone pavers are available in various colors and textures, as well as precut tiles, rough edges, and smooth edges. 

Precut tiles are fantastic because they lie evenly and snugly together. Many people enjoy the uncut versions’ rustic aesthetic, but they take some ingenuity and, preferably, some talent in putting them together, comparable to a jigsaw puzzle. 

Precut, rough-edged flagstone is also a good option because it fits together well and has a natural appearance.

Building Your Flagstone Patio : Step-By-Step

Fiesr Step  To build a Flagstone Patio

It’s time to start excavating after you’ve measured your patio and acquired the proper quantity of gravel, sand, and pavers. Hopefully, by this point, you’ve decided on your patio’s size and shape and marked it off. 

The construction of a Flagstone Patio is a simple process. Take the appropriate measures if you want square or rectangular patios. If you want a round or odd-shaped patio, use the spray paint to mark off where you want the patio edge to be.

Now comes the exciting part

Step 2

Begin digging. Dig down the desired depth all around the edge of the patio silhouette using the flat spade to cut into the dirt. Then, using the circular spade, start removing soil. 

Place this soil on a tarp or anywhere else. Continue excavating the foundation until the entire area has dried. Even if you build a raised patio, you’ll need to level the ground first.

Step 3

 You’re putting the patio up against a building, ensure the surface slopes away, so water runs away from it instead of towards it. 

If not, make sure you get flat ground. The foundation beneath the patio should be as level as possible and firmly tamped down. Air pockets or irregularities will cause problems down the road.

Step 4

Place the landscaping fabric on the ground at this point. Make careful to leave enough space for the edges to overlap. Then double-check that you’ve dug down past the edging material.

Step 5

If you’re using wood or another edging material, ensure the wood’s top edges are level with the Stone’s bottom edges. You might have to delve a little further. 

Alternately, you may use the wood as the final edging; make sure it’s level all the way around. Later on, space will utilize the 2x4s for screening. You might not need the 2x4s or edging material if you use edging or landscaping Stone.

Step 6

Use your 2×4 as screeding equipment to evenly distribute gravel on the landscape’s surface. It’s helpful to have a helper at this point since they can stand on the other side of the patio and help level it. 

Make sure your gravel is perfectly level. Fill up any air pockets or holes by tamping them down as necessary. If you’re using crushed granite, rock, or coarse sand, you’ll only need between 1 and 12 times the depth of your flagstone rock. 

You can wet the granite and leave it to sit overnight for at least 12 hours if you also use coarse sand as a layer.

This operation will harden it and make it feel like you’re working with cement. If you’re not using sand, you can skip this step.

Step 7

It’s time to start laying your pavers after applying your gravel, sand, or both base and ensuring their level. Whether you start on one side, along the perimeter, or in the middle is all up to you. 

It’s better to start in the middle of a patio or at one end of a walkway if you’re using large stones, precut stones, or want to ensure you have a finished edge. 

If you want a natural edge, it doesn’t matter where you start; Chisel the edges back far enough so that they’re all over your foundation layers rather than up into the earth, where they’ll heave even more.

Step 8

Use a level when laying your stones and either add sand or gravel under them or remove it as needed. They will wear poorly and crack if there are air gaps beneath them or if the stones shake or wobble. 

Make sure all of the stones are secure. Less water will seep through if you place your stones closer together, and they will require less upkeep in the long term. 

Provide enough space for water to seep through, or pooling will occur.

Step 9

Wear your safety eyewear when you get close to the edges. If you need to cut the stones to fit, lightly tap on a grooved edge on either side of the rock where the break should happen. 

Once the groove is deep enough, place the Stone so that the broken edge hangs over an edge and gently beat it with the Mallet. It should easily snap off.

Step 10

It’s time to mortar your Stone after you’ve set it down. If you’ve spaced your stones far enough apart from the crushed granite, or if you’re using granular granite sand or any other form of course sand, make sure to sweep it into the cracks and thoroughly fill them in. 

You may have to re-water the cracks and fill them.

Step 11

Keep some sand or gravel on hand to fill up any gaps that may arise. Heaving will occur if you live in a rainy swamp or a region that freezes and thaws frequently. 

Heaving is less likely if you use coarse sand or crushed granite instead of ordinary mortar or cement. If you opt to use the cement and mortar method, make sure you buy supplies developed for use with rock patios.

Step 12

The upkeep is simple. Temp it down and add more sand or gravel until it is level again if a stone has come out of position or displaced. 

Re-wet the area and fill in the cracks. In heavy heaving zones, you can expect the patio to need this maintenance once or twice a year, and less in the dryer, warmer regions. This tiny bit of extra upkeep is well worth the effort.

Why Flagstone Patio?


When correctly installed, flagstone can last up to 20 years. It has been able to withstand high traffic regions and the abuse of vehicles and equipment. 

Flagstone has been able to last for 30 to 50 years or more in some cases. And will outlast cement, asphalt, and brick if adequately maintained. Flagstone is both gorgeous and elegant, in addition to being long-lasting.

You can expect your flagstone patio to add beauty and elegance to your outdoor space for many years if you lay it down properly and use suitable materials. 

Plus, by constructing the patio yourself, you’ll contribute “sweat equity” to your home. You’ll not only save a lot of money on labor, but you’ll also increase the value of your house.


Flagstone is a long-lasting material that can survive for over fifty years with little maintenance. Flagstone patios are a good option if you want something natural and robust. They’re not as lasting as concrete, but they appear more traditional and natural.