Do you need gravel under a concrete patio?

Not all surfaces need concrete rebar reinforcement, but adding it makes concrete stronger and more resistant to large cracks. ... Without rebar reinforcement, concrete is highly prone to cracks due to tension forces. Rebar helps prevent cracks from growing wider largely by preventing cracked slabs from moving apart.

With a brief look, a 16x16 area at 6 inches deep, you would need approximately 6.73 tons or 4.74 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas.

With a brief look, a 20x20 area at 6 inches deep, you would need approximately 10.52 tons or 7.41 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas.

The good news is that you can pour the concrete in water. ... The biggest issue with pouring concrete under water is movement. If the water is moving, it can wash away the cement paste that's holding the sand and gravel together. But if the water is calm, then it's not a problem at all.

The good news is that you can pour the concrete in water. ... The biggest issue with pouring concrete under water is movement. If the water is moving, it can wash away the cement paste that's holding the sand and gravel together. But if the water is calm, then it's not a problem at all.

Most exterior slabs do not need a vapor barrier. ... In general, place the concrete slab directly on top of the vapor barrier, with the subbase below. ... The vapor barrier can be placed under the subbase, if the building is closed in when the dry subbase material is placed.More items...

Do concrete patios need rebar? Even though it's possible to build a concrete patio without rebar, it's not recommended. All concrete is subject to cracks, but rebar holds all the cracks together and keeps the slab level and even. Without rebar, the cracks would become quite wide and the concrete would become uneven.

Do concrete patios need rebar? Even though it's possible to build a concrete patio without rebar, it's not recommended. All concrete is subject to cracks, but rebar holds all the cracks together and keeps the slab level and even. Without rebar, the cracks would become quite wide and the concrete would become uneven.

When concrete patios are left to their own devices, nature may compromise durability and appearance. Winter freezing/thawing cycles could create cracks and flaking, and UV rays may whitewash the surface. Sealing your patio will help prevent this, deter stains and revive appearance with the color of your choice.

Not only is thinset a critical component underneath cement board but the other critical component is the fasteners.

And you won't have the fasteners if you are trying to install it over concrete..

How To Install Tile Over An Existing Concrete PatioMaterials:Step 1: Prep your surface.Step 2: Do a dry-lay.Step 3: Install your tile.Step 4: Grout your tile.Step 5: Seal your grout.Step 6: Enjoy your new patio!Jul 25, 2017

Project Instructions Check the forms for level (¼ inch for every 12 feet is sufficient to allow for rain run-off). Patio and sidewalk forms should slope evenly away from structures. Evenly spread 3 to 4 inches of QUIKRETE All Purpose Gravel and then level the gravel. Compact the gravel base using a tamper.

In general, if you are doing any work which is going to modify your floor plan, then, you do need a permit. If you are going to pour concrete for a patio in your backyard, then, yes, you do need a permit.

ANSWERRemove the concrete when you can afford it. Get some prices. ... Consider cutting the concrete patio lengthwise along the house and installing a perforated pipe to take the water away. ... Remove the concrete and put in a smaller patio. ... Consider replacing the patio with colored concrete.

You don't need any cement board under the tub. It is far more important to have a sturdy layer of ply under the tub.

In general, if you are doing any work which is going to modify your floor plan, then, you do need a permit. If you are going to pour concrete for a patio in your backyard, then, yes, you do need a permit.

spray the patio down with white vinegar and leave it on long enough to kill the odor. Then apply baking soda. Thank you for reporting!

Laying a concrete driveway over an existing gravel one is possible, but it is not generally recommended. ... The kind of gravel that is intended to go under cement is typically a smaller grade than what is used for gravel driveways.

Mix the dry materials in a ratio of 3 parts gravel toHow to Coat Over a Pea Gravel Patio | DoItYourself,Pour or sprinkle the binding solution over the pea gravel in long, even, and light strokes.

A hot tub requires a stable surface — whether it's a concrete slab, reinforced deck, or firmly compacted soil with crushed gravel.

There's also the option to have the hot tub installed in the ground but that still requires a concrete vault..

Install a Gazebo or Umbrella. One of the easiest ways to keep a concrete patio nice and cool is to install something that offers shade from the sun. ... Paint the Patio. Bare concrete tends to get hotter than painted concrete surfaces. ... Lay Down a Rug. Sign up to get the latest DIY Projects and Advice! ... Use Water.Jan 29, 2010

You don't need any cement board under the tub. It is far more important to have a sturdy layer of ply under the tub.

Applying a bead of polystyrene-compatible caulk or mastic to the top of the insulation board minimizes water infiltration behind it. For under-slab applications, the rigid foam insulation typically should be installed over a gravel base, with a poly vapor diffusion retarder between the gravel and insulation.

Four inchesFour inches is the minimum thickness for a concrete patio. You'll want to make it six to eight inches thick if the patio will support a structure such as a gazebo or hot tub.

To create the base, spread a 4-inch layer of gravel over the excavated area. Level the gravel, following the initial grade, and cover it with a 1-inch layer of sand. Tamp the gravel and sand down with a plate compacter before laying the blocks.

Pour concrete over a solid, well-drained base Because concrete slabs “float” on the soil, soft ground or voids underneath may cause unsupported areas to crack under heavy weight like vehicles. Pack about 4 in. of sand or gravel over clay and other poorly draining soils to provide even support.

can you make concrete without gravel? A typical concrete mix cannot be made without gravel. Concrete is made from a mixture of cement, sand, gravel (crushed stone), and water. A mix ratio of 1 part cement, 2 parts sand, 3 parts gravel, and water, will give you a strong concrete mix.

Registered User. permanent wood foundations require gravel, not concrete or soil for the footings - every situation is a little different, but all footings need to bear on the soil/gravel/bedrock/ whatever is supporting the structure equally, or it's going to settle at different rates.

Concrete porch and patio paints are frequently low-luster acrylic latex paints designed to conceal imperfections and resist fading, scuffing, cracking and UV damage. Epoxy-based paints provide high durability and stain resistance, making them ideal for garage or patio floors.

Do I need a DPM under laminate flooring? Simply put yes. In order to prevent damp rising through the concrete floor and causing issues, a DPM should be used under all final floor types including wood flooring, laminate, vinyl and floor tiles.

You only need one coat of bonding primer. It goes on white then dries clear in about 4 hours. After waiting the recommended 4 hours of dry time, you can apply your first coat of Behr Porch and Patio Paint.

InstructionsDig Under the Concrete. Dig out the soil, gravel, or other material from under the concrete, using a shovel and a pickax. ... Strike the Concrete. Lightly sprinkle the concrete with water to minimize dust. ... Pry Off Stubborn Pieces. ... Move the Concrete Chunks With a Hand Truck.Feb 19, 2020

Gravel is a whole lot cheaper than a concrete, asphalt, or other paved surface. It can cost less than 1/2 of paved driveways. Even though you will have to maintain the gravel, it is inexpensive to do so.

You really do not want the patio level with the house threshold, too easy for water to get in to the house. As for the slab, it will not settle if you prepare the subgrade correctly. You need the footers to support the structure, the slab is just there to walk on, and has no structural importance.

The application of vapor barrier in exterior concrete is unnecessary due to the fact that water penetration does not matter. Any slab on grade that is enclosed and on the interior of a building should have a vapor barrier installed prior to pouring concrete, especially if flooring will be applied.

Installing pavers is very similar to concrete installation. You must start with a solid base and foundation. Most frequently, this involves digging down into the ground and removing the existing dirt and replacing it with gravel and sand.

Registered User. permanent wood foundations require gravel, not concrete or soil for the footings - every situation is a little different, but all footings need to bear on the soil/gravel/bedrock/ whatever is supporting the structure equally, or it's going to settle at different rates.

For a concrete patio slab the best method of providing reinforcement is to use either wire mesh or steel bars (rebar) placed in a grid pattern. The use of rebar requires that each of the intersections of rebar be tied together with rebar tie wire. ... This must be done as soon as the concrete is poured.

One reason it is used as a backfill or sub-grade material. As with all material, it has to be placed correctly and compacted properly. Sand needs to remain damp as well as other material before placement of the concrete. If you want to build a road, use gravel, but this does not mean you will not have issues.

Excavate the slab area to a depth of about 7 inches, allowing 3 inches for a gravel base and 4 inches for concrete.

2 Answers from MyBuilder Landscape Gardeners You need approximately 0.75 cubic metres of gear. A ton bag of sharp sand is around 0.5 cubic metres so 2 bags will be plenty and 10 cement.

Whether you pour concrete for a walkway or patio, a strong gravel base is required to prevent the concrete from cracking and shifting.

Gravel is especially important in clay soil because it doesn't drain well, which results in water pooling under the concrete slab and slowly eroding the soil as it finally drains..

Not only is thinset a critical component underneath cement board but the other critical component is the fasteners. And you won't have the fasteners if you are trying to install it over concrete.

InstructionsDig Under the Concrete. Dig out the soil, gravel, or other material from under the concrete, using a shovel and a pickax. ... Strike the Concrete. Lightly sprinkle the concrete with water to minimize dust. ... Pry Off Stubborn Pieces. ... Move the Concrete Chunks With a Hand Truck.

Wash the concrete patio with a degreasing cleaner and a scrub brush. ... Sand the concrete patio using large-grit sandpaper anywhere that the surface is rough or uneven. ... Make any necessary repairs to the concrete patio. ... Use a paint roller with a telescoping handle to apply a coat of masonry primer.More items...

An average 1:2:3 mix contains one part cement, two parts sand and three parts gravel. To make 1 cubic yard of concrete, you'd need seven 94-pound bags of cement, about 1/2 cubic yard of sand and just over 3/4 cubic yard of gravel. The amount of water you use depends on how wet the sand is.

4 inchesThe minimum thickness of any concrete slab is 4 inches. However, if the concrete patio will have heavy features added to it, you may want to thicken it to 6 or 8 inches. The concrete is typically laid on a 2-3 inch base of gravel, sand, limestone, or other aggregates.

4 inchesWe generally try to maintain a minimum thickness of any slab at 4 inches, if the patio will have heavy features added on it, you may want to thicken it to 6 or even 8 inches, at least under the area where the feature will be added..

One cause of a sinking patio is weight. The soil under your home is strong, but concrete is heavy. Over time, this weight will cause the concrete patio to naturally sink a bit. ... In this case, even if the patio is replaced, the problem will continue until you've addressed the drainage issue.

Laying a concrete driveway over an existing gravel one is possible, but it is not generally recommended. ... The kind of gravel that is intended to go under cement is typically a smaller grade than what is used for gravel driveways.