What’s Included
- FREE State-Stamped Engineered Blueprints
- FREE Building Design Consultation
- EASY DIY Construction
- 50-year warranty**
- 100% of arch panels pre-cut to fit with prepunched holes and only two size bolts.
- Comes with: Steel arches, hardware, blueprints & instructions
Design and build your perfect Quonset today. You’ll save on building materials and labor while enjoying an unbeatable 50-year warranty on your garage, workshop, shed, or storage building. Quonset arch kits combine steel’s natural strength with the convenience of prefabricated construction.
*Sales and use tax are not included in price. Buildings are designed using standard keyway foundation and SteelMaster does not provide installation services. All projects are sold as DIY.
**Exclusions apply; see warranty for details.
- Add-ons: Endwalls, doors, window frames & insulation
- Steel gauge minimum: 22-gauge*
- Steel grade: Premium 80 grade
- Corrugation depth: Standard 7.5in
- Corrosion protection: Galvalume Plus
- Standard hardware: Grade 2 hex bolts NZF3000 commercial grade coating & serrated hex head locking nuts
*Arches are priced in standard 22-gauge and may not meet your snow and/or wind load requirements. Buildings can be designed in thicker steel to meet higher wind and heavier snow loads. Consult with your building specialist for further details.
- Minimal maintenance, especially for structural integrity, versus traditional buildings
- Strongest steel, and at 80,000psi, it’s 4x stronger than competitors.
- Snow & wind-rated, Quonsets withstand up to 300psf of snow load and hurricane-force 190mph winds.
- State-stamped blueprints, engineer-approved and in most cases required for permitting.
- DIY construction with cut-to-fit panels, pre-punched holes, and minimal cutting or drilling required.
- 50-year warranty from the date of purchase.
- Open floor plan with 100% usable interior space.
- Anti-corrosive, thickest coating (AZM180) of Galvalume Plus — maintenance-free, no painting required.
Every aspect of your Quonset can be designed to fit your needs. SteelMaster offers add-ons, or you can locally source these building options.
- Steel-framed openings
- Steel endwalls
- Custom endwalls
- Overhead & canister garage doors
- Man door/service doors
- Heavy-duty roof skylights
- Turbine & louver vents
- Insulation
- Window frames
Choose between four models, depending on the look or engineering standards you want. When you work with SteelMaster, you get access to experienced building engineers who are certified in all 50 states to help you select the right Quonset model for you.
- A Model – Straight side walls with pitched roof
- S Model – Straight side walls with an arched roof
- X Model – Angled walls with pitched roof
- Q Model – Arched walls and arched roof
Not sure if a Quonset is for you? Learn more about arch building kits.