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How to Pour a Concrete Patio

Lowe's Editorial Team

By Lowe's Editorial Team
Published September 21, 2026

A concrete patio creates a durable, low-maintenance foundation for an outdoor living space. Learn how to pour a concrete patio, from preparing the site and building concrete forms to mixing, finishing and curing a concrete slab.

Key Takeaways

  • Plan and mark the concrete patio area, making sure the layout is square before digging. 
  • Excavate the site and prepare a stable, compacted gravel base for the concrete slab. 
  • Build and level concrete forms, adding proper slope away from the home when needed. 
  • Install rebar or other reinforcement when required for the project. 
  • Mix, pour and spread the concrete evenly, then screed and float the surface. 
  • Edge the slab, add control joints and apply a textured finish for improved traction. 
  • Cure the concrete properly before walking on it, adding heavy furniture or applying stains and sealers.

Tools and Materials

Tools

Materials

Note

Product costs, availability and item numbers may vary online or by market.

Before You Begin

  • Pouring a concrete slab is a large DIY project that requires careful planning and preparation. Before digging, call 811 to have underground utilities marked.
  • Wet concrete can irritate or damage skin and eyes. Wear gloves, eye protection, protective clothing and other personal protective equipment recommended by the concrete manufacturer. Wear appropriate respiratory protection when handling dry concrete mix.
  • Check local building codes and permit requirements before beginning your project. Follow the concrete manufacturer’s instructions for mixing, placing, finishing and curing.
  • Choose your workday carefully. Moderate temperatures and overcast conditions can make concrete easier to work with. Avoid pouring concrete during rain, extreme heat, extreme cold or intense direct sunlight when possible.

How to Pour a Concrete Patio

Here are steps for pouring a concrete patio. Keep in mind your steps may vary greatly depending on the project details.

Step 1: Plan and Mark the Patio

  • Determine the size and location of your concrete patio. The patio in this project measures 10 feet by 8 feet.
  • Measure the area and drive stakes beyond each corner. Run mason line or string between the stakes to establish the perimeter.
  • Check that the corners are square using the 3-4-5 method. Measure 3 feet from a corner along one side and 4 feet along the adjacent side. The distance between those two marks should be 5 feet.
  • You can also check the layout by measuring diagonally between opposite corners. The two diagonal measurements should be equal when the layout is square.
  • Once you're satisfied with the dimensions, mark the patio perimeter with landscape marking paint.

Step 2: Excavate the Patio Area

  • Remove the soil inside the marked area. Dig deep enough to accommodate the gravel base and planned concrete slab thickness.
  • Remove roots, vegetation and other organic material from the excavated area. A stable, well-prepared base helps support the finished concrete patio.

Step 3: Build the Concrete Forms

  • Build a form around the perimeter using straight 2 x 4 lumber. The forms contain the wet concrete and establish the shape and finished height of the slab.
  • Drive stakes outside the forms and secure the form boards to the stakes with screws. Add additional stakes along longer sections to help prevent the boards from bowing outward under the weight of the wet concrete.
  • Use a long level to check the forms.
  • If the concrete patio is next to your house or another structure, establish the appropriate slope away from the structure to help direct water away. Check local requirements and project specifications for the proper slope.

Step 4: Prepare and Compact the Gravel Base

  • Add a layer of gravel or crushed stone inside the forms to create a stable base for the concrete.
  • Spread the material evenly and compact it thoroughly with a hand tamper or plate compactor. Check the depth and grade as you work.
  • A properly compacted base helps provide support for the concrete slab and can reduce settlement.

Step 5: Install Rebar

  • Depending on the project, local requirements and expected loads, reinforcement may be used to help strengthen the concrete slab.
  • Cut and arrange rebar in a grid pattern. Secure the intersections with rebar tie wire.
  • Place the grid on rebar chairs so the reinforcement is properly positioned within the concrete rather than resting directly on the gravel. Maintain the required clearance between the rebar and forms.

Good to Know

Reinforcement requirements vary. Check local building codes and follow the specifications for your project when determining whether to use rebar or another type of concrete reinforcement.

Step 6: Calculate How Much Concrete You Need

  • Before mixing, calculate how much concrete you'll need based on the length, width and thickness of your patio slab.
  • For this project, the finished concrete slab is approximately 4 inches thick. Use a concrete calculator to estimate the amount of concrete mix required and purchase a little extra to account for variations in the base and potential waste.

Good to Know

Larger concrete patio projects may require enough material that ordering ready-mix concrete is more practical than mixing individual bags.

Step 7: Mix the Concrete

  • Mix the concrete according to the manufacturer's instructions. Measure the water carefully because adding too much can affect the concrete's performance.
  • The mixed concrete should be workable without being excessively wet or runny.
  • Before placing the concrete, lightly dampen the gravel base and forms if appropriate for the product and conditions.

Step 8: Pour and Spread the Concrete

  • Place the mixed concrete inside the forms. Use a shovel and rake to distribute the concrete evenly and work it into corners and around reinforcement.
  • Work continuously so sections of the slab don't begin setting before adjacent concrete is placed.
  • Consolidate the concrete along the forms to help eliminate voids. Avoid disturbing the forms or reinforcement while you work.

Step 9: Screed the Concrete

  • Screeding removes excess concrete and levels the surface to the height of the forms.
  • Place a straight 2 x 4 across the forms. With a helper if necessary, move the board across the surface using a back-and-forth sawing motion.
  • Fill low areas with fresh concrete and screed them again until the surface is even.

Step 10: Float the Concrete

  • After screeding, use a bull float to smooth the surface and help prepare it for finishing.
  • Move the bull float across the slab perpendicular to the direction you screeded. Keep the tool relatively flat and avoid overworking the surface.
  • For a small concrete pad, a hand float may be sufficient.

Step 11: Edge the Concrete

  • Use a concrete edger to create a clean, rounded perimeter.
  • First, use a hand float to smooth the concrete near the forms. Run the edger between the concrete and form, slightly raising the leading edge of the tool to avoid digging into the surface.
  • Make several passes as needed, then lightly float the area to blend in tool marks.

Step 12: Add Control Joints

  • Control joints create planned locations for shrinkage cracking as concrete cures.
  • For smaller slabs, joints can be formed while the concrete is workable using a concrete groover. Run the groover across the slab at the planned joint locations, then lightly float away unwanted tool marks.
  • Control-joint placement, spacing and depth depend on the slab dimensions and project requirements. Follow accepted concrete construction practices and local requirements when planning joints.

Step 13: Finish the Concrete Surface

  • For a traditional outdoor concrete patio finish, use a concrete broom to create a textured surface.
  • Once the concrete has set enough to hold the texture, gently pull the broom across the surface. A broom finish provides additional traction, which is useful for an outdoor surface that may become wet.
  • Other decorative concrete finishes can also be used depending on the look you want.

Step 14: Remove the Forms

  • Allow the concrete to set sufficiently before removing the forms. Follow the concrete manufacturer's recommendations for timing.
  • Carefully remove the stakes and form boards without damaging the edges of the slab.
  • Backfill around the patio as needed once the concrete has cured enough to avoid damaging the slab.

Step 15: Cure the Concrete

  • Proper concrete curing helps the slab develop strength and reduces rapid moisture loss that can contribute to cracking.
  • One method is to keep the concrete damp during the initial curing period. You can also cover the damp slab with plastic sheeting to help retain moisture.
  • Another option is to apply an appropriate concrete curing compound using a garden sprayer or roller. Follow the product instructions for application and coverage.
  • Avoid walking on the new concrete until it has gained enough strength, and wait longer before placing heavy furniture or other significant loads on the slab. Follow the concrete manufacturer's recommendations for curing times.
  • Wait until the concrete has adequately cured before applying paint, stain or sealer. Check the coating manufacturer's instructions for the required concrete cure time.

Step 16: Saw-Cut Control Joints if Needed

  • Instead of tooling control joints into wet concrete, some patio designs use saw-cut joints after the slab has hardened enough to cut without damaging the edges.
  • Use a concrete saw or an appropriate saw equipped with a diamond blade rated for concrete.
  • Decorative saw cuts can also be incorporated into the patio design, but they shouldn't interfere with the control joints required to help manage cracking.

Caution

Cutting concrete creates significant dust and debris. Wear appropriate eye, hearing and respiratory protection and follow the saw manufacturer's safety instructions.

Finish Your New Concrete Patio

  • Once your concrete patio has properly cured, add outdoor furniture, planters and other finishing touches to create a comfortable outdoor living space.
  • Learning how to pour a concrete patio takes planning, preparation and attention to timing, but a properly installed concrete slab can provide a durable foundation for years of outdoor use. Shop concrete mix, concrete tools and other project supplies at Lowe's or Lowes.com.

Pouring a Concrete Patio FAQs