The best flat top grills for backyard cooking are 36-inch, 4-burner models like the Blackstone 36″ Culinary Griddle, Weber Slate 36″ Griddle, and Traeger Flatrock for most families, while 28-inch 2-3 burner models like the Blackstone 28″ Original Griddle and Camp Chef Gridiron 36 are better if you have a smaller patio or need to store the grill between cooks.
Choosing comes down to how much cooking area you actually need, how many independently controlled burners you get, and how the grease system and assembly will fit your backyard routine. A larger surface is not automatically better if it means uneven heat or a grease trap you hate cleaning.
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Our Top Picks
Royal Gourmet PD4001 4 Burner Propane Gas GriddleLarge22.64 x 55.31 x 37.99 Inches63.9 PoundsCheck on Amazon
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Royal Gourmet GB4000P 4 Burner Propane Gas Griddle4-Burner+Hard Cover63.94 x 28.07 x 37.72 inches125.8 PoundsCheck on Amazon
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How to Choose the Right Size and Layout
For backyard use, flat top grills cluster into three useful classes. Your household size and cooking style should dictate the class, not just the biggest grill you can afford.
| Class | Example Models | Cooking Area | Burners | Total BTU | Best For |
|---|---|---|---|---|---|
| Compact 28-inch | Blackstone 28″ Original, Pit Boss Sportsman 2-Burner | 470 – 505 sq in | 2 | 34,000 – 38,000 | 2-4 people, balconies, infrequent cooks |
| Standard 36-inch | Blackstone 36″ Culinary, Weber Slate 36″, Camp Chef Gridiron 36 | 680 – 770 sq in | 4 | 48,000 – 62,000 | 4-8 people, burgers + sides at once, weekly backyard cooking |
| Premium 36-inch | Traeger Flatrock, Loco Cookers 36″ SmartTemp | 690 – 750 sq in | 3 | 45,000 – 60,000 | Built-in wind guards, consistent low-temp control, outdoor kitchen setups |
BTU alone does not tell you much. What matters is BTU density and how it is split across burners. A 36-inch grill with 60,000 BTU across four U-shaped or straight burners gives you four controllable zones, which lets you sear steaks on high on the left while toasting buns on low on the right. A 36-inch grill with the same BTU but only three burners gives you larger zones but less granular control.
Worked Calculation: Heat Density and Propane Runtime
To compare heat potential and operating cost, calculate BTU per square inch and expected runtime from a standard 20 lb propane tank.
1. Heat density: Divide total BTU by cooking area. Example: Blackstone 36″ Culinary is rated around 60,000 BTU over 769 sq in = 78 BTU per sq in. A Weber Slate 36″ is around 48,000 BTU over 703 sq in = 68 BTU per sq in. Both are sufficient for searing, but the higher density model will recover temperature faster after you place a large load of frozen smash burgers or vegetables.
2. Propane runtime: A 20 lb propane tank holds about 430,000 BTU of energy. Runtime = Tank BTU / Burner BTU per hour.
- At full blast on all 4 burners (60,000 BTU/hr): 430,000 / 60,000 = ~7.1 hours
- At typical mixed cooking (two burners on high, two on medium, ~38,000 BTU/hr effective): 430,000 / 38,000 = ~11.3 hours
- At low-and-slow or holding temp (~24,000 BTU/hr): 430,000 / 24,000 = ~17.9 hours
This is why a 4-burner grill does not waste propane if you use zone control. You rarely run all burners on high for a full cook, so real-world use is closer to 10-12 hours per tank, not 7.
Burner Layout and Heat Consistency Compared
Backyard flat tops use three main burner shapes, and they behave differently in wind and during preheat.
4 Straight Burners (Blackstone 36″ Culinary, Weber Slate 36″)
Four individually ignited H-style or tubular burners running front-to-back create four north-south zones. This layout gives the best side-to-side control for backyard cooks who want to work across the griddle. Preheat is typically 8-10 minutes to reach 400F in calm conditions. Heat consistency is strongest in the center of each burner and cooler at the front edge and corners, which is actually useful for holding cooked food without overcooking.
3 U-Shaped Burners (Traeger Flatrock, Loco Cookers SmartTemp)
Three U-shaped burners provide more even coverage per burner and fewer cold spots between burners, but each zone is wider. The Traeger Flatrock adds three chromed valves and a wind-block design marketed as TruZone control, which significantly reduces the left-to-right temperature swing that plagues open-frame carts on windy patios. The trade-off is you have three dials instead of four, so you cannot run as many distinct temperatures simultaneously.
2 Burners on 28-Inch Models
Two burners on a 28-inch surface leave a noticeable cooler strip in the middle where the burners divide. That is manageable for 2-person meals but frustrating if you try to cook a full breakfast of bacon, eggs, and pancakes at once, because you will be constantly shuffling food to the hot spots.
For wind performance, look for a recessed cooktop and integrated wind guards. Flat tops without them, especially older open-frame Blackstone 28″ models, can lose 50-75F on the windward side in a 10-15 mph breeze. The Weber Slate and Traeger Flatrock both recess the griddle into the firebox, which helps heat retention and reduces propane use outdoors.
Grease Management: Rear vs. Front vs. Through-Cooktop
Grease management determines how much you will enjoy owning the grill after the first month. There are two dominant systems in 2026:
- Rear grease trap (most Blackstone models, Camp Chef Gridiron): A trough along the back edge funnels grease through a hole into a hanging cup or small drawer at the rear. It keeps the front clean and leaves the full front edge usable for spatulas, but you have to reach behind a hot griddle to remove the cup, and on a deck against a wall it can be awkward.
- Front-access or integrated drawer (Weber Slate, Loco Cookers): Grease is channeled to a front or side-accessible drawer or cup. The Weber Slate uses a front-access grease drawer that slides out without reaching around the back, which is much easier if your grill is built into an outdoor kitchen or pushed near a fence. It also reduces the risk of spills on the patio when you pull the trap.
- Through-cooktop rear port (Traeger Flatrock): The Flatrock uses a P-shaped opening near the rear of the cooktop plus a dual-wall U-shaped channel to an enclosed rear catch. Food cannot easily fall through, and wind does not blow grease off the back.
Cooktop seasoning also affects grease. Rolled carbon steel (Blackstone, Camp Chef) requires initial seasoning and regular thin oiling but develops non-stick over time. The Weber Slate comes pre-seasoned carbon steel and is marketed as rust resistant, which shortens the initial setup. The Traeger Flatrock uses a separate 3/16-inch carbon steel griddle plate variation with a different seasoning requirement. None are stainless, so all need a light oil layer after cleaning to prevent rust, especially if stored uncovered.
Assembly and Backyard Footprint
Assembly demands are the most underestimated part of buying a backyard flat top. Weight and complexity vary a lot:
- Blackstone 36″ Culinary / 28″ Original: Usually ships as cooktop, firebox, cart frame, side shelves, and propane bracket. Expect 60-90 minutes with two people. The 36-inch cooktop alone weighs 60+ lbs, so lifting it onto the base without a second person is difficult. Wheels are basic and work best on concrete, not grass or gravel.
- Weber Slate 36″: More pre-assembled out of the box, typically 45-60 minutes. Heavier overall due to thicker steel and enclosed cabinet base. Larger footprint but more stable on uneven pavers and includes better locking casters.
- Camp Chef Gridiron 36: Moderate assembly, with foldable side shelves and a lower total weight, making it easier to move through a gate or store in a garage. Usually $500–$700 market range, lighter gauge steel trades some heat retention for portability.
- Traeger Flatrock: Heaviest and most furniture-like, with an enclosed cabinet and integrated wind guards. Assembly is often 75-100 minutes and the unit is less portable once placed. Designed to stay in one outdoor kitchen position.
Measure your space before ordering. A 36-inch griddle with both shelves extended is typically 62-65 inches wide and 22-24 inches deep. You need at least 36 inches of clearance behind it for lid operation and rear grease access if you choose a rear-trap model, and 6 inches from combustible walls for safety. For small patios, a 28-inch model on a folding stand or a 36-inch without fixed side tables saves 12-15 inches of width.
Decision Matrix: Which Grill Fits Your Backyard Situation
| Your Situation | Pick This Class | Why |
|---|---|---|
| Cook for 6+ regularly, want burgers on one side and veggies on low on the other | 36-inch 4-burner (Blackstone 36″ Culinary, Weber Slate 36″) | Four zones give true simultaneous temps; 700+ sq in prevents crowding and steaming |
| Windy backyard or deck, grill sits in open area | Traeger Flatrock or Weber Slate | Recessed cooktop and built-in wind management holds temp better, uses less propane |
| Need to move grill through a gate or store in garage between cooks | Camp Chef Gridiron 36 or Blackstone 28″ Original | Lighter, foldable shelves, smaller cart rolls easier over uneven ground |
| Want lowest maintenance and easiest grease handling | Weber Slate 36″ or Loco Cookers SmartTemp | Front-access grease drawer, pre-seasoned plate, enclosed storage |
| Cook for 2-3, balcony or small patio under 80 sq ft | 28-inch 2-burner | Smaller footprint, faster preheat, enough area for two steaks plus sides |
What to Check Before You Buy
Ignore marketing and verify these five items in the spec sheet:
- Individual burner ignition: Each burner should have its own igniter, not one igniter that lights the next burner by crossover.
- Grease capacity: Rear cups hold 6-10 oz; front drawers hold 20+ oz. If you cook fatty foods like bacon for a crowd, a small rear cup will overflow mid-cook.
- Lid type: A hinged hard cover protects the cooktop from rust and can be closed briefly for melting cheese, but it is not an oven lid. A soft cover alone means you must oil more often.
- Regulator and hose length: Standard is a 3-foot hose for 20 lb tanks. If your tank sits inside a cabinet, you need a longer hose or cabinet clearance.
- Steel thickness: 3/16-inch (4.7mm) plates like on the Flatrock hold heat better between batches than thinner 7-gauge plates, reducing recovery time when you load cold food.
Frequently asked questions
Can a flat top grill be used effectively in windy conditions?
Yes, models with a recessed cooktop and integrated wind guards generally retain heat better outdoors. The Weber Slate and Traeger Flatrock use recessed griddles, while the Traeger Flatrock also has a wind-block design. Open-frame models can lose 50-75F on the windward side in a 10-15 mph breeze, making wind management especially important on exposed patios and decks.
How much propane does a backyard flat top grill typically use?
A standard 20 lb propane tank holds about 430,000 BTU of energy. At full blast on all burners, a grill rated at 60,000 BTU/hr would run for about 7.1 hours. Typical mixed cooking at approximately 38,000 BTU/hr lasts about 11.3 hours, while holding temperature at approximately 24,000 BTU/hr lasts about 17.9 hours.
What maintenance does a carbon steel griddle plate require?
Carbon steel griddle plates need initial seasoning and regular thin oiling to develop a non-stick surface and prevent rust. After cleaning, apply a light oil layer, particularly if the grill is stored uncovered. The Weber Slate arrives pre-seasoned and is marketed as rust resistant, but it is still carbon steel rather than stainless steel.
Can these grills be moved or stored between cooking sessions?
Yes, but portability varies substantially by model. The Blackstone 28″ Original is suitable for smaller patios and storage between cooks, while the Camp Chef Gridiron 36 has foldable side shelves and a lighter cart. The Traeger Flatrock is heavier, furniture-like, and designed to remain in one outdoor kitchen position. Wheels work best on concrete rather than grass or gravel.
How much space should be left around a 36-inch flat top grill?
A 36-inch griddle with both shelves extended is typically 62-65 inches wide and 22-24 inches deep. Plan for at least 36 inches of clearance behind it if the design requires lid operation or rear grease access, and leave 6 inches from combustible walls for safety. A 28-inch model or a grill without fixed side tables can reduce the required width.
Final Recommendation
For most backyards in 2026, a 36-inch 4-burner flat top is the right default. Choose the Blackstone 36″ Culinary if you want the largest cooking area and widest availability of accessories, usually in the $350–$550 range, and you do not mind a rear grease cup. Choose the Weber Slate 36″ if you prefer front-access grease, better wind handling, and a more enclosed cart, usually $900–$1100. Choose the Traeger Flatrock if your grill lives in a fixed outdoor kitchen and you value heat consistency over having four separate zones, usually $800–$950.
If space or storage is tight, drop to a 28-inch model. You give up simultaneous zone cooking but gain easier assembly and a grill that actually fits your patio without dominating it.
