Build a Single Car Garage/Large Storage | Step-by-Step

Introduction

This tutorial provides a comprehensive guide on how to build a single-car garage or large storage shed, approximately 200 square feet, without the need for city permits in many locations. By following these step-by-step instructions, you can enhance your property value while managing costs effectively.

Step 1: Gather Materials

Before starting your project, ensure you have all necessary materials. Here’s a detailed list:

• Lumber

  • 52 pieces of 2x4 (92 5/8” long)
  • 18 pieces of 2x4 (8’ long)
  • 36 pieces of 2x6 (8’ long)
  • 52 feet of pressure-treated 2x4
  • 20 feet of 2x10 (header)
  • 40 feet of 2x8 (ridge block)

• Plywood

  • 10 sheets of OSB (4’x8’)
  • 14 sheets of T1-11 siding plywood (4’x8’)
  • 1 sheet of 3/8” plywood (for soffits)

• Felt Paper and Trim

  • 600 sq ft of #15 felt paper (sides)
  • 400 sq ft of #30 felt paper (roof)
  • 80 ft of 1x3 primed SPF trim board (corners and garage door)
  • Additional trim boards for facia and corners

• Roofing Materials

  • 14 packs of architectural shingles
  • 1 pack of starter shingles
  • 1 pack of ridge cap shingles

• Other Supplies

  • 6 gallons exterior primer
  • 4 gallons paint for exterior
  • 14 j-bolts for concrete
  • Nails and assorted screws
  • 36” steel door with pre-made jamb
  • 8’ by 7’ basic garage door

Step 2: Prepare the Foundation

• Concrete Pad
  • Hire a professional or do it yourself to install a 4-inch concrete pad, which serves as the foundation for your garage. Ensure it's level and cured before starting construction.

Step 3: Frame the Walls

• Construct Side Walls

  • Use 92 5/8” pre-cut studs to frame two long walls. Mark out 16-inch centers using a tape measure and secure with nails.
  • Ensure the crown of each stud faces outward for stability.

• Frame the Garage Door

  • Construct an opening for an 8’ wide by 7’ tall garage door using two 2x10s for the header, sandwiching a piece of ½” plywood in between. Use king studs and jack studs to support the header.

• Man Door Installation

  • Frame the wall that includes a man door, ensuring to leave a quarter-inch gap on each side for proper fitting.

Step 4: Assemble the Structure

• Stand Up Walls
  • With assistance, raise the framed walls and secure them with j-bolts to the concrete pad. Ensure everything is squared and plumb.

Step 5: Build the Roof

• Install Ridge Block and Rafters

  • Create a ridge block using a 2x8 and attach it at the center of the roof. Cut rafters at a 22.5-degree angle and secure them to the ridge block.
  • Use toenailing or brackets to attach rafters to the top plates.

• Sheathing

  • Install OSB sheathing over the rafters and ensure proper spacing. This adds structural integrity.

Step 6: Install Siding and Roof

• Felt Paper and Siding

  • Apply felt paper as a vapor barrier before installing T1-11 siding with 2” siding nails.

• Roofing

  • Install drip edges along the roofline and apply roofing felt. Follow with architectural shingles, ensuring proper alignment and staggering.

Step 7: Finish the Exterior

• Painting

  • Apply primer to all exterior surfaces. Once dried, paint the garage to match your home.

• Install Doors

  • Follow manufacturer instructions to install the garage door and man door, ensuring proper sealing and alignment.

Step 8: Final Touches

• Caulking and Sealing
  • Caulk around doors and windows to prevent leaks. Consider applying a concrete sealer on the pad for a finished look.

Conclusion

Building a garage can be a rewarding project that adds value to your property. This guide covered the essentials, from gathering materials to finishing touches. Ensure you follow all safety protocols and local regulations. For further assistance, consider consulting professionals for specific tasks. Happy building!