
MORTARLESS MASS
Goldilocks-zone thermal performance with stamina and stability. Pay attention to your guests not your oven.
View specificationsINTRODUCING: Opus One
Mortarless. Multi-fuel. Made-to-Last.
A true retained-heat oven engineered for versatility, serviceability, and decades of use. U.S. Patent Pending. Founder's Edition, from $6,795
Traditional masonry retained-heat
Live-fire only metal ovens

I'm Jim. I've spent 20+ years making the most reliable VW engine swap system on the market. VW Vans and Alloy Ovens may seem like worlds apart, but as I like to joke they're almost the same thing: both are exterior sheet metal and internal combustion.
Outdoor cooking might be my favorite thing, and I wanted a real retained-heat wood oven without the scale and pricetag of a home addition. So I built what I couldn't find: a low-hassle, true retained-heat oven that can move with you. I'm ready to build yours.
Jim, Founder & Engineer
The culmination of 6 years of design and four generations of prototypes.

Goldilocks-zone thermal performance with stamina and stability. Pay attention to your guests not your oven.
View specifications
The tight gaps, overlaps, and multi-layers of the stainless outer shell and cassette core manage flow instead of mortar. Result: true retained-heat efficiency of a mortared oven, minus the failure points.
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Six years. Four generations. Hundreds of hours of instrumented fires. We set out to preserve the soul of a brick oven and redesign everything that made it fragile and permanent.
THE CASSETTE SYSTEM
A cassette is our modular brick holder: a stainless steel frame that holds four firebricks in precise alignment without mortar. Think of it as a cartridge: slide out a damaged brick, slide in a replacement. No mason required.
This is the core innovation that makes Alloy different. Traditional ovens use mortar to hold bricks in place, but mortar cracks from thermal cycling and moisture. Our cassettes use gravity, geometry, and stainless bands (for mobile/trailer applications). Bricks are locked together, with gaps controlled by the stainless frame.

THE FLUE
Moving the flue further from the operator isn't just nice for not getting smoke in your face, it also has additional function. It allows better firebrand (ember) settleout, and provides room for catalyst inserts if needed to satisfy local regulations. Because we did it correctly, all this happens while not degrading the flow and draft, and without changing the traditional front vent location relative to the dome.
THE DOOR SYSTEM
The front door uses a multi-hinge system that works either direction. Open it with your right hand and it swings left. Open it with your left hand and it swings right. Grab it with both hands and pull straight back to remove it completely for full open-flame access.
This isn't just a convenience feature; it's designed for real cooking workflows. When you're managing a fire and food at the same time, you need access from whichever side your hands are free.

DESIGNED FOR REALITY
My wife and I don't plan to stay in this house forever. Building a traditional permanent oven would mean leaving thousands of dollars in concrete behind. Honestly, buyers often see them as a liability, not a feature. That's why I needed an oven that could move with us.
During the pandemic, brick became hard to source, and we had to switch suppliers multiple times. That's when we discovered how much 'standard' bricks actually vary, sometimes by as much as 3/8 inch. Traditional masons account for this with thick mortar joints. We took a different approach: we designed the mortarless cassettes to accommodate the full range of variation. The result is a system that works with real-world materials, not just spec sheets.
This also means you can source your own brick if you prefer. We offer the oven system without firebricks for people who want to buy locally or tune their own configuration.

Built to be repaired, not replaced. An outdoor centerpiece designed to serve for decades.
Alloy Oven Opus One. U.S. Patent Pending.

Patent-pending stainless rib-and-spar frame with replaceable brick cassettes. No mortar, no curing cycles, no vulnerability to over-firing or moisture.
Mix brick densities and suppliers to balance heat-up speed with multi-hour retention. Includes Pyrogel® insulation for unmatched thermal efficiency.
Wood & gas by default, with door-module options for charcoal, pellet, and electric. Swap or combine fuels to match your cooking style.
Replace individual bricks or cassettes, not the oven. Modular construction and rear-door access reduce downtime and extend usable life for decades.
True retained-heat performance without permanent construction. Assemble with basic tools, then relocate without demolition, cranes, or contractors.
Front-origin duct flows over the dome to a rear insulated chimney, improving draft, settling embers, and keeping the outlet farther from the cook.
Sleek stainless form with engineered weather resistance. Crafted to elevate outdoor kitchens while withstanding the elements.
Early build slots, launch pricing, and trade-only spec packs for qualified pros.
Two 16" pizza capacity, large 1,260 sq in cook floor

Common questions about the Opus One retained-heat oven.
Opus One Core is the oven skeleton at $6,795. It allows you to choose your own source and densities of firebricks. The oven requires 212 standard 2.5" firebricks. We suggest purchasing 220 to account for any breakage. Opus One includes the skeleton plus all firebricks at $8,795. Both use the same patent-pending cassette system and skeleton.
Opus One Core is $6,795 (firebricks not included). Opus One is $8,795 (firebricks included). The matching stainless stand is $2,495. Founder's Edition pricing: Core at $6,795, Full at $8,795, stand at $2,195. Founder's Edition is limited to the first 75 units.
Beyond the pricing, Founder's Edition buyers get free shipping and can choose their hinge block accent color. Standard production units ship with a warm bronze Cerakote finish on the hinge blocks. Founder's Edition buyers can pick from additional color options to match their outdoor space.
We're targeting Founder's Edition production starting March 2026, in time for next season. Join the launch list for updates and first crack at build slots when ordering opens.
Designed and built in the US.
No. Pizza is the obvious one, but bread, roasts, and long bake-downs on stored heat are really where this thing shines. You fire it once and cook for hours. Neapolitan pies first while it's ripping hot, then bread as it settles, then a roast as it slowly cools down.
This is the whole point of retained heat vs. live fire. After a full firing, you'll have usable baking temps (400°F+) for 8 to 12 hours or more. Fire it Friday evening, bake bread Saturday morning without relighting.
Same oven, same performance. One option lets you source your own firebricks.
Source Local, Save More
$7,995 regular price
Ships UPS Ground (free for Founder's Edition)
Everything Included
$9,995 regular price
Split ship: UPS + LTL freight (free for Founder's Edition)
Both options use the same patent-pending cassette system and skeleton.
Stand sold separately ($2,195 Founder's Edition).
FOUNDER'S EDITION — LIMITED TO 75 UNITS
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