Readers ask: How To Install Flagstone Over Concrete Patio?

Can you put flagstone over concrete?

While traditionally flagstones are set in a bed of compacted sand and gravel over raw dirt, they can also be installed on top of an existing concrete surface.

How do you attach flagstone to concrete?

Spread out enough cement, approximately 1″ deep to set one stone. Tap the stone into the cement with a rubber mallet or heavy hammer and block of wood. Use a straight edge across the top of the stone and across the top of the outline boards. If the stone is too low, lift up the stone and add more cement.

What do you put under flagstone?

You can use a course sand for under the flagstones, sure. Back when I used to lay brick patios I would use course sand or quarry screenings inter-changeably and it was fine. Them patios still look good. Those are brick patios however, where the space between the paving units is about a quarter inch wide.

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Do you need sand under flagstone?

You won’t need more than 1-2” of sand between the flagstone and the compacted crusher stone. Irregularities in the depth of the natural stones may influence how much sand you lay for each individual piece of this puzzle.

How much does it cost to put in a flagstone patio?

The national average materials cost to install a flagstone patio is $4.89 per square foot, with a range between $3.90 to $5.88. The total price for labor and materials per square foot is $18.04, coming in between $15.72 to $20.35.

How much base do I need for a flagstone patio?

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.

Can you lay flagstone on dirt?

Flagstone is a common landscaping stone used for patios, small retaining walls and walkways. Because flagstone is fairly heavy it can be laid directly on dirt, allowing low growing plants to grow in between.

What is the best base for flagstone walkway?

Concrete, aggregate, bark, gravel, and stones can be set directly on stable soil; paths made of of other materials need a base. Sand is a good choice, but it can wash out from under pavers and bricks, making them settle unevenly. To prevent washout in rainy areas, layer sand over a 2-inch gravel base.

What kind of mortar do you use for flagstone?

Mix 1.5 parts Portland cement, 3 parts sand, 0.5 part hydrated lime. Mix only as much mortar as you will use in 1 or 2 hours and do not add more water if mixture starts to get thick.

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How do you prepare the ground for flagstone?

  1. Step 1: Plan Your Patio.
  2. Step 2: Dig.
  3. Step 3: Add 3-4″ of Packed Gravel Base.
  4. Step 4: Install 1″ of Leveling Sand.
  5. Step 5: Puzzle Together The Flagstone.
  6. Step 6: Level the Flagstone.
  7. Step 7: Fill In The Gaps.

How long does a flagstone patio last?

How Long Will A Flagstone Patio Last? Both materials, flagstone, and pavers, are remarkably durable, lasting up to 10 years under normal conditions.

How do you put sand between flagstone?

Polymeric sand, or “poly-sand” seemed great at first. As easy to install as regular sand, almost. You simply sweep the material into the flagstone (or other paver) joints, lightly hose down, then it solidifies. Once it dries and hardens, the sand stays in place.

How do you grout a flagstone patio?

Take your grout sponge and dip it in water–then squeeze it out real well, you want a rather dry sponge for this. Take one corner of the sponge and wipe down the one side of the flagstone mortar joint. Then, use a different corner of the sponge and clean the other side of the joint. Okay, now you’re good.

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