20x20 Outbuildings

249+ Consumer Affairs Reviews

13550+ SiteJabber Reviews

105+ Shopper Approved Reviews

284+ Google Reviews

Recommended Use:

Farm Buildings, RV Garage, Workshop

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20×20 Outbuilding

The 20x20 metal outbuilding kit is one of the most popular choices for a personal building. Whether you need storage space for equipment or recreational vehicles, outbuildings are a versatile building solution that can be designed to accommodate your functional and aesthetic preferences. The clear span framing of our steel kits provides up to 300 square feet of column-free interior, allowing you to maximize your space.

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Framing Detail, Warranties and Service

Brand General Steel

Available Products I-Beam Framing: 26 Gauge Sheeting: 26 Gauge Sheeting

Add Colors Roof, Walls and Trim

Structural Warranty 50 Years

Paint Warranty 40 Years

Standing Seam Roof Warranty 25 Years

Galvalume Roof Warranty 20 Years

Project Coordinator Included at No Additional Cost

Popular Outbuilding Components

A steel building package from General Steel is an ideal fit for an outbuilding because of its versatility. The basic building package includes the primary and secondary framing, but it’s the components that truly make an outbuilding your own. Framed openings allow building owners to choose where sectional doors, roll-up doors, and windows will be located on the structure. Liner panels can be added to protect insulation, ridge vents installed for ventilation, and exterior color schemes added for aesthetic value.

Primary and Secondary Framing
1:12 Roof Pitch
26 Gauge Roof and Wall Sheeting
Fasteners
Sealants and Flashing
Deluxe Trim Package
Ridge Cap
Plans and Drawings

3070 Man Door
Sectional Door
Roll Up Door
Horizontal or Vertical Slide Windows
Insulation
Insulated Stucco Panels
Light Transmitting Panels
Gutters and Downspouts

Metal Building Framing Details

Frequently Asked Questions

Customize the Look and Functionality

There are hundreds of ways to personalize & improve the functionality of your Outbuilding.

Color Choices

Your General Steel metal building can come in a variety of colors. Browse our metal building color...

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Components

The interior and exterior building accessories you choose for your project will make your building...

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Insulation Options

Find out everything you need to know about insulation for metal buildings including why you need...

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Siding

Siding is one of the easiest ways to make your steel building look less like a steel building. From...

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Resources Selected for You

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Buy Land Secure Loans

Before purchasing land for your new building, use this guide to make sure you are considering all...

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Buying vs Renting Commercial Building

From location to cash flow, there are several key factors when looking to rent or buy commercial...

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Forecast

Experts underestimated increases in steel prices every year since 2017. Learn how the pandemic and...

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Measure My Lot Size

Use our map app to find your property and measure your lot size. You can even place various steel...

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How to Measure My Land

Measuring your property size is an important step in deciding what size building to buy. Explore...

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Green Building Material

Learn how the production, quality, and life cycle of steel has made it one of the most popular &...

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Wood Framing and Second Story Inside Metal Building

Framing Inside a Metal Building

We recommend framing interior walls with wood inside a metal building. That way you save money while...

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Storage Building Sizes

Not sure what size storage building kit you need? Discover small storage buildings, large storage...

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Digital Downloads

20x20 Outbuilding Brochure

Our I-beam building packages come with an impressive list of standard features and warranties. Explore popular components, color choices and reasons why a General Steel building is the right choice.

20x20 Brochure

Standard Features Infographic

From the primary and secondary framing to the fasteners, sheeting, sealants, and pre punched components, this is what makes a General Steel metal building system the most durable building available.

Standard Building Features

249+ Reviews on Consumer Affairs

"Great experience. I would give 10 stars if the site would allow it. Doak the salesman was awesome. He really went above & beyond for my project. I'm very happy I chose General Steel."
Patrick, Putnam Valley, NY

284+ Reviews on Google

"Great experience, I have had many compliments on the building the quality is outstanding. The whole General Steel team did a fantastic job. I have already recommended General Steel to others and will continue to do so, couldn't ask for a better company!!"
Randy, Roosevelt, UT

13550+ Reviews on SiteJabber

"The experience was awesome. I was given great information on the building and given an excellent deal. I really appreciate the help what was given to me as it guided me towards the correct size building needed for my purposes."
Brenda, Richmond, TX

105+ Reviews on Shopper Approved

“Really Good experience, the salesman was great he explained everything in detail, with no high pressure. I am glad I chose General Steel for my project.”
David, Urbana, VA

13550+ Reviews on SiteJabber

"Excellent customer service. Questions were answered promptly. Would definitely recommend General Steel to others."
Todd, Fairhope, AL

249+ Reviews on Consumer Affairs

"I am thoroughly impressed with the General Steel team. Everyone I have spoken with has been extremely helpful. I am very happy with my decision to go with General Steel for this project and would recommend General Steel to anyone looking for a steel building."
Charles, Ripon, CA

284+ Reviews on Google

"All about the customer service. Through all phases of my job, concerns, and support throughout! Really appreciate all the attention and personal touch. Felt like I was talking and dealing with friends. Luke and Bruce really helped me out. Thanks again. Last stop shop for metal garage/building."
Chris, Felton, CA

105+ Reviews on Shopper Approved

"Really good experience, the project coordinator was very helpful, it's nice dealing with someone who seemed truly interested in my project. He made suggestions that allowed me to get accessory items I wanted and stay within budget, without high pressure. I am happy I chose General Steel."
Gary, Floyd, VA

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20x20 Outbuildings

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