The concrete masonry unit (CMU) block base is the structural foundation of every VistaScapes & Design outdoor kitchen in Broken Arrow — the material choice that distinguishes a permanent, durable outdoor kitchen from temporary modular systems and from the wood-framed outdoor kitchen structures that fail in Oklahoma’s outdoor conditions within 5 to 10 years. Understanding why CMU block is the correct structural choice for a Broken Arrow outdoor kitchen, and how the block base is constructed to handle Oklahoma’s soil conditions and weather exposure, helps homeowners evaluate the quality difference between a masonry outdoor kitchen and a wood-frame or modular alternative when comparing bids. VistaScapes & Design builds exclusively CMU block bases for outdoor kitchen structures in Broken Arrow — it is the right material for this application and we do not offer wood-frame alternatives.
Why CMU Block vs Wood Frame and Modular Systems
Wood-framed outdoor kitchen structures — stud-framed boxes covered with cement board and stone or tile veneer — are the most common alternative to CMU block in the Broken Arrow outdoor kitchen market, and they fail through a consistent mechanism: Oklahoma’s summer heat and humidity, combined with the wood’s natural moisture response cycle and the moisture that inevitably infiltrates any outdoor structure, cause the wood framing to rot, the cement board to delaminate at the fastener points, and the veneer to crack and separate as the framing moves seasonally. A wood-framed outdoor kitchen structure in Broken Arrow that is not perfectly waterproofed at every penetration point (appliance cutouts, access door frames, countertop edges) will begin showing delamination and veneer cracking within 5 to 8 years. CMU block does not rot, does not respond to moisture cycling with dimensional change, and does not delaminate — a CMU block base in Broken Arrow is essentially permanent. Modular aluminum-framed outdoor kitchen systems (the pre-configured outdoor kitchen base systems available at big-box stores) are more weather-resistant than wood-frame but are limited in size configurations, counter height options, and veneer finish choices; they are not designed for the scale of a full Broken Arrow masonry outdoor kitchen with appliances, bar seating, and covered patio integration. CMU block construction provides unlimited configuration flexibility, any veneer material (stone, stucco, tile), and the load-bearing capacity to support granite, quartzite, or porcelain countertops without additional structural reinforcement.
CMU Block Construction Process
The CMU block construction process for a Broken Arrow outdoor kitchen begins at the concrete slab: the kitchen base is laid out on the existing patio slab or on a new slab extension — the slab must be level, crack-free, and adequately thick (minimum 4 inches, 6 inches preferred for kitchen base loads) before block installation begins. Block laying: standard 8-inch CMU block (8 inches wide, 8 inches tall, 16 inches long) is laid in running bond (each row offset by half a block from the row below) with Type S mortar joints; the first course is set on the slab with mortar, leveled and plumbed, and each subsequent course is checked for plumb and level before the mortar sets. Vertical reinforcement: where the kitchen base height exceeds 32 inches (standard outdoor kitchen counter height requires a base of approximately 34 to 36 inches plus countertop thickness), or where the structure is free-standing rather than against a wall, vertical rebar (#4 or #5 rebar) is placed in the block cores at 32-inch centers and the cores are filled with grout to create a reinforced masonry structure with significantly higher lateral strength than unreinforced block — this is particularly important in Oklahoma’s tornado-risk environment. Appliance cutouts are framed out during block laying with steel angle iron lintels spanning the cutout openings to transfer load around the appliance space — each grill, refrigerator, or access door opening in the kitchen base is framed this way. After the block base is complete, the exterior surface receives the veneer material (mortar-set stone, stucco, or tile) and the countertop is fabricated and installed by the stone or tile fabricator. VistaScapes & Design’s masonry crews are experienced in CMU block outdoor kitchen construction throughout the Broken Arrow and Tulsa market.
Call VistaScapes & Design at (918) 779-1317 for a free outdoor kitchen consultation in Broken Arrow. We’ll explain our CMU block construction approach and why it produces an outdoor kitchen that lasts a lifetime in Oklahoma’s climate.
