Build a DIY Reinforced Concrete Barbecue for Epic Grill Outs 2026

Hosting a barbecue for eight people doesn't have to break the bank. With about €47 worth of building materials — hollow concrete blocks, bricks, cement, sand, and lime for mortar — you can build a sturdy, reinforced concrete barbecue that will last for years. Add some metal rebar and reclaimed wood for the formwork, and you're ready to create a permanent outdoor cooking station. Before you start, make sure you have the right home improvement tools and materials on hand for a smooth build.

Step-by-Step Construction Guide

Build the Concrete Cooking Surface

Start by constructing a wooden formwork. Place a grid of rebar inside for reinforcement, and position a bucket as a mold for the ventilation hole. Pour the concrete and let it dry for a few days. After about two hours, rotate the bucket slightly to prevent it from sticking. Once fully cured, remove the formwork to reveal your sturdy concrete slab. For the base and supports, you'll want to ensure you have a solid foundation — check out our garden supplies collection for leveling tools and ground preparation essentials.

Assemble the Side Supports

Create two side supports using three courses of hollow blocks (200x200x400 mm) and half-blocks, bonded with mortar in staggered joints. After the second course, insert a reclaimed marble slab as an intermediate shelf. This creates a handy storage area for your grilling tools and plates. Once the supports are set, place the dried concrete slab on top. For a clean, organized workspace, consider adding a storage bench nearby for extra prep space.

Build the Brick Enclosure

Dry-fit the bricks on the concrete slab to determine how many you need and to verify their position in a U-shape. Once satisfied, assemble them permanently with mortar. While the mortar is still fresh, clean out a groove in the side joints where the grill grate will slide. After five courses, the wall is complete. Clean excess mortar from the bricks with a wire brush and finish the joints with a metal rod. For the final touch, add a outdoor lighting setup above the barbecue so you can grill well into the evening.

Materials and Tools You'll Need

• Hollow concrete blocks (200x200x400 mm)
• Bricks and half-bricks
• Cement, sand, and lime for mortar
• Metal rebar for reinforcement
• Reclaimed wood for formwork
• Bucket (as mold for ventilation hole)
• Water-cooled clipper saw (for cutting grooves)
• Wire brush and metal rod (for finishing joints)

Tips for a Perfect Barbecue Build

• Use a water-cooled clipper saw to cut a 15 mm groove on the inner side of the bricks for the grill grate to slide smoothly.
• Rotate the bucket after a couple of hours to prevent it from bonding to the concrete.
• Let the concrete cure for at least 3-4 days before removing the formwork.
• Choose reclaimed marble or stone for the intermediate shelf — it's durable and adds character.

Frequently Asked Questions

How long does it take to build this barbecue?

The concrete slab needs several days to cure, but the actual assembly of the supports and brick enclosure can be completed in a weekend. Plan for about 5-7 days total, including curing time.

Can I use this barbecue for charcoal or gas?

This design is ideal for charcoal grilling. The ventilation hole and open front allow for excellent airflow. If you prefer gas, you can modify the design by adding a gas burner — just ensure proper ventilation and safety. For charcoal, stock up on supplies from our BBQ grills and outdoor cooking supplies.

What size grill grate should I use?

The groove you cut should match the thickness of your grate. Standard grates are about 5-8 mm thick. Measure your grate before cutting the groove to ensure a perfect fit. You'll find a wide selection of grates and accessories in our outdoor patio furniture collection.

Is this barbecue weather-resistant?

Yes, concrete and brick are naturally weather-resistant. However, to extend its life, consider applying a concrete sealer and covering the top during heavy rain or snow. For additional outdoor protection, browse our outdoor decor for covers and weatherproofing solutions.

Can I add a chimney or smoke box?

Absolutely! You can extend the brick enclosure upward to create a chimney for better smoke ventilation. A smoke box can be added by building a small compartment on the side. For inspiration, check out our pergolas and gazebos for outdoor structure ideas that complement your barbecue area.

Enhance Your Outdoor Cooking Space

Once your barbecue is built, consider adding comfortable seating and a dining area nearby. A sturdy dining table and coordinating sofas or benches will make your backyard the go-to spot for gatherings. For chilly evenings, an outdoor heater extends the grilling season. And don't forget a rug to define the lounge area and add a cozy touch.

For more DIY projects and outdoor living inspiration, explore our full range of home improvement and garden supplies at GrandGoldman.com.

Browse Grand Goldman Home Decor

Discover unique craftsmanship home decor and furniture at the Grand Goldman Shop.