How to Make Concrete Pavers with Molds (DIY Patio & Path)

This guide covers the full process: choosing molds, mixing concrete, casting, curing, and setting pavers in a sand bed. For the underlying math on how much concrete you'll need, the calculator below handles it.

What You Need

Materials

Item	Notes
80-lb bagged concrete mix	1 bag = ~3–4 standard pavers
Paver molds (plastic, 12"×12" or similar)	Reusable; buy 3–5 for batch production
Cooking spray or form release oil	Coat molds before every pour
Concrete pigment (optional)	Add to dry mix before water
Fiber reinforcement (optional)	1/2 lb per 60-lb bag; reduces edge chipping
Coarse sand	For setting bed (2 inches under pavers)
Plastic sheeting	Curing cover

Tools

• Wheelbarrow or mixing tub
• Concrete hoe or drill with paddle mixer
• Trowel
• Level
• Rubber mallet
• Screed board (straight 2×4)

Choosing Molds

Pre-made plastic paver molds are available at home improvement stores and online for $5–25 each. They come in squares, rectangles, hexagons, and decorative brick patterns. Most are reusable 20–50 times.

DIY wood molds: Cut pieces from 3/4-inch plywood to your desired size and screw 2×2 border strips around the edges. A simple 12×12-inch frame is quick to build and can be disassembled for easy release.

Size consideration: Standard manufactured pavers are 4×8 inches (1/3 cubic foot at 2.5" thick). DIY pavers at 12×12 inches are more practical to cast in quantity at home — fewer mold fills to hit the same square footage.

How Much Concrete Do You Need?

Calculate your patio square footage, then add 10% for waste. Use this quick table for 12×12 pavers at 2-inch thickness:

Patio Size	Pavers Needed	80-lb Bags
6×6 ft (36 sq ft)	36	10 bags
8×8 ft (64 sq ft)	64	18 bags
10×10 ft (100 sq ft)	100	28 bags
10×12 ft (120 sq ft)	120	33 bags

Open the full Concrete Slab Calculator →

Step-by-Step: Casting Pavers

Step 1: Prepare Molds

Coat the interior of each mold with cooking spray or form release oil. Set molds on a flat, level surface — a sheet of plywood or your driveway works well. The bottom of the mold forms the visible face of the paver, so the surface you pour onto matters.

Step 2: Mix Concrete

Add water to the wheelbarrow first, then add dry mix. Blend until uniform and lump-free. Target a stiff consistency — the mix should hold shape when squeezed and not run off a shovel.

For colored pavers: Add dry pigment to the dry mix and blend thoroughly before adding water. This ensures even distribution. See the colored concrete guide for color ratios and options.

For the correct water-cement ratio that balances workability with strength, see our concrete water ratio guide.

Step 3: Fill Molds

Scoop concrete into each mold and press into corners with a trowel. Fill in two layers, tamping down each layer. Slightly overfill the mold, then screed the top flat with a straight board.

Tap the sides of the mold with your hand or a rubber mallet to release trapped air bubbles.

Step 4: Cure the Pavers

Cover filled molds immediately with plastic sheeting. After 24 hours, carefully flip each mold over and tap the back to release the paver. Set released pavers face-side up on a flat surface and cover again with plastic.

Cure for 7 full days before setting, with occasional misting if weather is hot or dry. Full compressive strength is reached at 28 days.

Step 5: Prepare the Setting Bed

For a patio or path, prepare the base before setting pavers:

1. Excavate 4 inches below desired finished height
2. Add 2 inches of compacted gravel base
3. Add 1 inch of coarse sand, screeded flat and level

See our concrete subgrade preparation guide for base compaction details — a solid base prevents pavers from settling or rocking.

Step 6: Set the Pavers

Lay pavers on the sand bed with 1/4-inch gaps between them. Use a level to check each paver and tap into place with a rubber mallet. Fill gaps with polymeric sand (sand with a binding agent) and sweep into joints. Tamp lightly and mist with water to activate the binder.

Key Specs at a Glance

Spec	Recommendation
Thickness (pedestrian)	2 inches minimum
Thickness (light vehicle)	3.5–4 inches
Concrete type	Standard 80-lb mix or sand mix
Cure time before setting	7 days
Setting bed	2" compacted gravel + 1" coarse sand
Joint spacing	1/4 inch (fill with polymeric sand)

Common Mistakes

Releasing molds too early. Pavers released before 24 hours often crack at corners and edges. Patience saves pavers.

Setting in soil instead of sand. Placing pavers directly on soil leads to uneven settling and tipping. A proper sand bed is what keeps a DIY patio looking level after years of use.

Inconsistent mix consistency. Batching concrete with slightly different water amounts batch to batch causes color variation across pavers. Mix one batch at a time and keep measurements consistent.

Related Guides

• DIY Concrete Stepping Stones — Similar casting process for garden paths
• Concrete Subgrade Preparation — How to properly prepare the base before laying
• Stamped Concrete Guide — Texture and pattern options for a finished surface