In this article, get step-by-step instructions for how to roof a shed. There are many different types and styles of roof structures which you could choose for building your storage shed. A “shed” roof or “lean-to” is not always what you might imagine. In it’s basic form, it is simply a roof having only one plane or surface. If you’re building a free-standing shed in your backyard, you’ll likely be installing a gable roof (refer to illustrations below).
These types of roofs are most common and can be found in most neighborhoods across the country. Once you’ve determined the structure of your roof, it’s time to get going.
Tools to Consider For The Job:
As a refresher, remember that one “square” is an area equivalent to 10 ft by 10 ft, or 100 square feet. When you measure your storage shed roof (length multiplied by width), you will arrive at a number which is equal to square feet. Don’t confuse square feet with a square of roofing!
Example: Let’s say that the length of your roof is 20 feet, and the height (moving up the slope) is 10 feet. Multiply these two sides (10 X 20), and you’ll arrive at 200 square feet. Now, divide that number by 100 (remember a square is 100 square feet). Your answer is two (200 divided by 100). So, in this example, you’ll need two square of roofing for each side of your roof.
If this is a open gable roof example, with two slopes, you’ll need approximately four (4) squares of roofing to complete the job, if both slopes are 10 ft X 20 ft.
Three bundles typically equals one square. This would be the case if you are using typical 3-tab asphalt shingles to do the job. Each package (bundle) of shingles will provide details of the coverage for their specific product. The heavier the shingles, or if you choose laminated shingles, you should estimate four to five bundles per square.
Let’s say, for this example; you choose to install a 25-year, three-tab asphalt roof (not really a heavy gauge). You would calculate shingles at three bundles per square.
To continue with our example; if your shed measures out to require five square of shingles, you’ll need to pick up fifteen bundles, or 3 bundles per square.
Three bundles to a square is most common, which applies to most three-tab strip shingles and some lightweight laminated shingles. Heavier three-tabbed shingles and laminated shingles require four, or sometimes five, bundles to cover a square.
Important: When roofing a shed with shingles, you’ll most likely have a gable roof structure, or a shed roof structure. Most homeowners will use simple three-tab composition style shingles (or asphalt shingles).
Gable Roof: As a rule of thumb, add 10% to your calculations to accommodate the starter course, waste, and ridge cap.
Hip Roof: Add 15% to your calculations for starter, waste, and ridge cap.
Felt: Apply 15 pound felt. Work from bottom to top, being sure to lap the ridge (peak) over to the other slope of roof.
Drip Edge: Install the drip edge over the felt, front and back, but under the felt on the bottom edge of roof sides. Be sure to apply drip edge to all sides of the roof shed.
Apply Shingles: The starter-row shingles should be applied seemingly upside-down to prevent leaks passing through the top course of shingles. Nail each shingle with four nails, being sure to keep the nail inside of the adhesive strip—never below. Cover the peak of the roof (ridge) with cut shingles as shown in the video.
— Refer to the video below for detailed instructions on how to roof a shed.
Still need help? Call Restoration Roofing for a free consultation. (580) 324-3639