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Complete Buyer's Guide

Everything You Need to Know
About Metal Garages

A practical guide to steel framing, roof styles, sizing, doors, foundations, permits, and installation across Northern California.

Structural Framing & Materials

NorCal Garages utilizes premium galvanized steel coated in heavy zinc to resist weathering, rust, and corrosion. We offer two primary framing thickness levels depending on your lot exposure, local snow load requirements, and budget.

14-Gauge Standard

2.5" x 2.5" steel tubing. The industry standard, offering excellent strength and economic value for most residential storage needs.

12-Gauge Heavy-Duty

Thicker 2.25" x 2.25" steel tubing with higher tensile strength. Highly recommended for structures with spans over 30 feet or high-altitude sites.

20-Year Warranty

Standard on all 12-gauge framing purchases, giving you long-term protection against frame rust-through.

Technical Specifications

Steel Material Galvanized USA Steel
Standard Gauge 14-Gauge (2.5" Tubing)
Heavy Duty Gauge 12-Gauge (2.25" Tubing)
Frame Warranty 20-Year Rust-Through

Roof Styles & Wind Loads

Selecting the right roof style is essential to match your home's aesthetics and handle local elements like leaf debris, high winds, and winter precipitation.

Regular Roof

The most economical design. Panels run horizontally from front to back. Ideal for budget-conscious carports and smaller detached garages.

Boxed-Eave Roof

Offers a traditional residential look with horizontal roof panels. Great for matching nearby residential shingles at a moderate price point.

Vertical Roof

The strongest configuration. Steel panels run vertically from peak to eave, letting water, snow, and pine needles slide off easily. Mandatory for buildings 31' or longer.

Technical Specifications

Regular Roof Limit Up to 30 feet wide
Vertical Roof Benefit Best debris/snow shedding
Standard Wind Rating Up to 140 MPH certified
Standard Snow Rating Up to 35 PSF certified

Sizing & Layouts

Our structures are fully customizable. Widths range from single-car setups to large commercial spans, and heights can accommodate oversized vehicles or high clearances.

Standard Widths

Single-Car (12' wide), Double-Car (18' to 24' wide), Triple-Car (26' to 30' wide), and Commercial/Triple Span (32' to 60' wide).

Custom Lengths

Standard lengths start at 20' and can grow indefinitely in 5' increments (e.g., 20', 25', 30', 35'...).

Side Heights

Heights range from 6' up to 20' for commercial lift clearances, RV parking, or boat coverage.

Technical Specifications

Width Range 12' to 60' (custom spans)
Length Increments 5-foot spacing limits
Leg Heights 6' to 20' clearance
Door Layouts Front, side, and corner designs

Doors, Windows & Add-ons

Add access points and ventilation to customize your metal garage into a highly functional workspace or storage facility.

Roll-Up Garage Doors

Standard manual doors ranging from 6'x6' up to 14'x14' commercial roll-ups. Chain hoists and automatic openers are easily installed.

Walk-in Entry Doors

Heavy-duty steel pedestrian doors (36"x80") with locks provide secure, quick entry without opening main garage doors.

Windows & Insulation

Optional 30"x30" single-pane windows can be added to bring in natural light, along with vapor barrier insulation to prevent condensation.

Technical Specifications

Standard Door Size 9'x8' (for double-car garages)
Commercial Door Size Up to 14'x14' vertical track
Window Dimensions 30"x30" white aluminum
Lean-to Add-ons 10' or 12' open side shelters

Site Preparation & Foundation

Before our professional crew arrives to install your steel garage, you must ensure the foundation is fully prepared, level, and accessible.

Level Site Policy

The installation site must be level within 3 inches across the entire pad to ensure square framing and prevent door binding.

Anchor Types

We anchor to concrete (using heavy wedge anchors), asphalt (using rebar pins), or ground/dirt (using mobile home helix anchors).

Concrete Slab Specs

We strongly recommend a 4" thick concrete slab (4000 PSI) reinforced with wire mesh and a 12" perimeter footing for local builds.

Technical Specifications

Site Level Tolerance Within 3" front-to-back
Concrete Slab Specs 4" minimum (4000 PSI)
Footing Depth 12" thick perimeter edge
Anchors Included Yes (matching foundation type)

Permitting & California Codes

Permit requirements depend on your local city limits or county guidelines. We offer structural engineered drawings to assist with the municipal approval process.

Local Permits

Obtaining permits, verifying boundary setbacks, and easement compliance are customer responsibilities.

Engineered Drawings

Standard engineered drawings can be provided with your deposit to submit to your local zoning department.

Title 24 & Fire Codes

Standard structures meet structural wind and snow loads. Special fire-resistant modifications are available for urban zones.

Technical Specifications

Wind Certification 140 MPH standard
Snow Load Standard 35 PSF (custom up to 60+)
Engineered Plans Available upon order deposit
WUI Compliance Custom framing adjustments

Ordering & Installation Timeline

Our streamlined process ensures your custom steel garage goes from order placement to a completed 1-day installation as quickly as possible.

1. Small Deposit

Secure your building order with a 12% to 15% deposit. The rest is due only after installation is completed.

2. Fabrication Schedule

Once your site prep is ready, your materials are fabricated and we schedule a delivery date.

3. 1-Day Install

Standard carports and garages are completely assembled and anchored by our professional crew in just 3 to 6 hours.

Technical Specifications

Down Payment 12% to 15% (credit/check)
Final Balance Paid after installation is complete
Installation Duration 3 to 6 hours for standard setups
Professional Crew Delivery & assembly included
FAQ

Metal Garage Guide FAQ

Which metal garage roof style is strongest?

The A-frame vertical roof is the strongest option because panels run from peak to eave, helping rain, snow, and debris shed more efficiently.

Is 12-gauge steel worth it?

12-gauge steel is recommended for heavier wind, snow, larger buildings, and buyers who want the added confidence of a thicker frame and rust-through warranty.

Can a metal garage be installed without concrete?

Yes, metal garages can be installed on compacted dirt or asphalt, but a concrete slab is strongly recommended for the best seal and long-term performance.

Who handles permits for a metal garage?

Permit requirements vary by location, so customers should check local zoning and building departments. Engineered drawings and calculations can be provided if required.

Ready for Your New Garage?

Get a free quote today. Our American-made steel garages are built to last — delivery and installation included across Northern California.

Call (916) 385-2138 Email Us