Outdoor Kitchen Cabinet Materials
Stainless Steel Outdoor Cabinets
Stainless is the default for outdoor cabinets, but the grade matters. Grade 304 has 8% to 10.5% nickel and more chromium than 430, which has no nickel at all, and the nickel is what gives 304 its corrosion resistance. One hood maker calls 304 "a must" for outdoor kitchens. Grade 430 costs less and is fine inside the house. Ask for the grade in writing and check the hinges, slides and screws too: a 304 door on plain steel hinges will still rust at the hinge. In full afternoon sun, any metal door gets hot to the touch, so a covered patio or a shade sail makes stainless much more pleasant to use.
Marine-Grade Polymer Cabinets
Marine-grade polymer cabinets are cut from high-density polyethylene (HDPE) sheet, a sheet developed for boat building. One leading maker says its sheet is stabilized for harsh sun and won't rot, swell, splinter or delaminate when wet. Polymer comes in solid colors all the way through, so a scratch doesn't show a different layer underneath, and doors can be routed into a shaker profile. Plastic sheet expands and contracts with temperature, so the maker should leave expansion room at joints and use the fasteners the sheet maker specifies. Ask for a sample in the color you want and leave it in your yard for a few weeks.
Powder-Coated Aluminum Cabinets
Aluminum cabinets don't rust, weigh less than steel, and take a powder coat in solid colors or wood-grain patterns. The coating is what you're really buying. The architectural aluminum industry rates coatings to AAMA 2603, 2604 and 2605, in rising order, based on years of outdoor exposure in South Florida plus lab tests for color and gloss retention and chalking. AAMA 2605 is the ten-year top tier. A cabinet coated to a higher spec will fade and chalk more slowly in the sun. Ask the maker which spec the powder meets. If nobody can tell you, assume it's the basic grade, and expect a wood-grain finish on the south or west face to fade first.
Grill and Griddle Islands
The grill island is the structure the cabinets go into. It's framed in galvanized steel studs or concrete block, sheathed in cement board and finished in stucco, stone or tile, with openings sized for the grill, a griddle or flat-top, a side burner, an access door to the gas valve, and drawers. Get the grill and griddle models first, because each one's install manual sets the cutout size and whether the island needs an insulated jacket. HomeGuide puts a built-in BBQ island at $3,000 to $10,000 installed, for grills up to about 3 ft long with one or two drawers and cabinets. Gas lines, water and new circuits are permit work, and outdoor receptacles need GFCI protection under the 2021 IRC.
Why St. George homeowners call St. George Cabinet Makers
- Estimates are free, and you're under no obligation to hire
- Measured on site and drawn before you commit
- Written price with species, finish and hardware listed
- One local cabinet maker per request, not a call list
- You pay nothing for the referral itself
St. George Heat and Outdoor Cabinets
St. George's climate is why indoor cabinets fail on a patio. The NOAA 1991-2020 normals for the St. George station put the average July high at 101.9°F, with June at 96.4°F and August at 99.9°F. Winter nights drop below freezing: the normal January low is 28.4°F. Rain is scarce, about 9.31 in. a year, and the air is dry. Hourly humidity at St. George Regional Airport averaged 35% over 2021-2025 and just 17% in June.
That combination is hard on wood. According to the USDA Wood Handbook, wood shrinks and swells with moisture and can warp, check and split. Outside, a cabinet goes from dry summer air to an occasional soaking storm to a frost, every year. Paint and varnish slow that exchange but don't stop it. Strong sun adds fading and chalking on top. Metal and polymer don't take on moisture, so the trouble spots move to the finish, the hardware and how hot the doors get.
Orientation matters as much as material. A grill island on a west-facing patio takes the hottest sun of the day on its doors, while one tucked against the house on the east side is in shade by early afternoon. If you're placing a new island, put the cabinet faces where a roof, pergola or the house itself shades them, and keep the grill's exhaust side away from doors you open often.
If you want the look of wood, use it as a facing that can be replaced, or choose polymer or powder coat in a wood-grain pattern. Keep exposed wood under a roof.
Outdoor Kitchen Cabinet Costs
HomeGuide's national figures: a pre-built modular outdoor kitchen runs $7,000 to $16,000 installed, and a custom one $10,000 to $35,000. Outdoor cabinets and drawers alone are $900 to $4,000 for materials, and the island framework $200 to $700 per linear foot. These ranges don't include the grill, which can cost more than the cabinets, or the gas, water and electrical runs. Get the cabinet line priced separately from the island masonry and the appliances so you can compare bids.
Outdoor Cabinet Quote Checklist
cabinet material and grade
304 stainless, HDPE polymer, or aluminum with its powder-coat spec- hinge, slide, pull and fastener material (stainless, not plated steel)
- island framing (steel studs or block), sheathing and finish
- appliance list with model numbers, and cutouts taken from their install manuals
- insulated jackets where the grill maker requires them
- countertop material and edge, and overhang for seating
- gas, water, drain and electrical work, GFCI outlets, and who pulls the permits
- drain holes or venting in the boxes so trapped water and heat can escape
Planning a covered patio kitchen with a hood? See custom range hoods for duct and clearance rules. Indoors, the island counterpart is on the kitchen islands page.