Quick Answer: How To Lay Flagstone Over Concrete?

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.

Can you lay stone over concrete?

Paving stones have become an increasingly popular material for driveways, patios, pool decks and walkways in the California Bay area. With proper installation, concrete pavers can be installed over existing poured concrete slabs if they’re in relatively good condition.

Can you lay patio slabs on top of concrete?

According to several paver manufacturers, paving blocks can be installed on top of concrete without mortar if you first lay down a 1/2″ to 1” bed of coarse sand. Drainage: 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.

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What is the best material to put between flagstone?

Sand: Sand is the most common joint filler, but it is challenging to keep in place and needs to be refilled. Rocks: You can use small rocks to fill large gaps, and gravel or crushed rock can be used to fill smaller gaps. Mulch: Bark and lightweight chunks of mulch are a great option for in-between flagstone.

What do you grout flagstone with?

The basic recipe for this sort of mortar is 9 parts sand, 2 parts cement and 1 part hydrated lime. Mix these together well before adding the water. Add the water slowly until it reaches a texture that stands up when shaped. Don’t mix more mortar than you can use in just a few hours as it begins to stiffen over time.

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.

How do you attach concrete to old concrete?

When using a liquid bonding agent, paint the bonder onto the existing concrete and allow it to dry until it is tacky. This usually takes only a few minutes. Then apply the repair material. Just as in the process described above, after the bonder has become tacky apply a scratch coat and then apply the repair material.

Can you pour new concrete over old cracked concrete?

There are situations when pouring new concrete isn’t the most suitable option. For instance, surfaces with larger cracks, heaving or settling conditions, or where height cannot be raised, replacement is a better solution. However, in most cases, you can pour a new layer of concrete onto the existing one.

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What can I use to cover my concrete patio?

You can‘t turn back time on spalling or cracks, but you can cover them up with the right concrete repair products. For example, a layer of Quikrete’s Re-Cap Concrete Resurfacer will give your patio a smooth and wear-resistant finish with the look of freshly poured concrete, but with a shorter working and wait time.

How do you lay a patio for beginners?

Here’s how to lay a patio for beginners in 6 easy steps.

  1. Dig 150mm into your patio area.
  2. Lay a compacted sub-base of 100mm.
  3. Cover the area with 40mm of concrete mix.
  4. Lay paving slabs 15mm into the concrete with a 10-15mm gap.
  5. Leave to set for at least 24 hours.
  6. Fill the gaps between the paving slabs with concrete mix.

Can you lay a patio without cement?

Adding sharp sand



If you‘re not confident about making a concrete bed, don’t worry – sharp sand is easier, and works just as well. It holds just as firm as cement and still allows water to escape beneath.

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 do you put under flagstone walkway?

Add Sand. With the weed block material in place, spread a few inches of sand out, making sure to keep it somewhat level (Image 1). For better drainage, make the middle of the pathway a bit higher than the sides for better run off. Tamp sand down for compaction (Image 2).

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What is the best base 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. The flagstones are then placed in the desired pattern, starting at the perimeter and working inward.

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