While there are many roofing options for sheds, metal roofing is ideal. Besides being affordable, the installation process is also relatively easy and simple. Nevertheless, many homeowners have not had metal roofing installed in their houses yet and wish to know how it is done. So, how do you install corrugated metal roofing on a shed?
Step-by-Step Tutorial on How to Install Corrugated Metal Roofing on a Shed
1. Thoroughly clean the roof
Before beginning the installation, it is crucial to prepare the roof surface. If there are old shingles, they should be removed to create a clean, flat surface. Also, ensure all debris, nails, and old adhesive are cleared.
For those insulating their roofs, it is essential to install plywood or OSB sheathing, which provides a stable base for the metal panels. If you plan on heating the shed, using an underlayment, such as a waterproof self-adhering membrane, is recommended to prevent condensation and protect the sheathing from moisture damage.
2. Install the edging and underlayment
Edging is crucial as it guides water off the roof. Start with the eave edging, followed by the rake edging. The eave edging should be screwed to the underside of the eave, while the rake edging overlaps the eave edging.
If your manufacturer suggests, install underlayment beneath the metal panels for protection. Ensure all edging is securely fastened with screws, not nails, for long-lasting durability.
| Step | Action | Recommended Tools/Materials |
|---|---|---|
| 1. Clean Roof | Remove old shingles, nails, and debris. | Pry bar, hammer, waste disposal. |
| 2. Install Edging and Underlayment | Attach eave and rake edging. Install underlayment if necessary. | Screws, stainless steel finishing nails, underlayment membrane. |
| 3. Install Metal Panels | Overlap each panel, secure with screws every 18-24 inches. | Metal panels, screws, silicone sealant, neoprene washers, power drill. |
| 4. Vent Installation | Cut and install roof vents. Seal edges with silicone. | Jigsaw, metal cutting blade, silicone sealant. |
| 5. Install Ridge Cap | Overlap ridge cap by 6 inches, secure with metal lap screws. | Ridge cap, metal lap screws, butyl tape, foam, silicone sealant. |
3. Install the corrugated metal roofing
Start from the bottom edge when installing the metal panels and work your way up. For optimal security and to avoid leaks, it’s recommended to fasten screws through the flat (low) part of the corrugated panels, ensuring each screw sits snug but not overly compressed.
Maintain a screw spacing of about 18 to 24 inches for stability, but never exceed 24 inches. After all panels are in place, apply a silicone sealant along the seams and edges for extra water protection.
4. Install ventilation pipe
Look for the right spot on your roof to install a ventilation pipe. An ideal place would be the center part of the roof. You need to make a hole in your roof and attach the vent using a circular saw and silicone sealant.
5. Add flashing
The last thing to install on your shed is the flashing. This material protects your metal roofing and sheds against water. You can place the flashing wherever there are two pieces of metal roofing. It would help if you used your hands to bend the flashing into a V shape.
Then, secure the flashings with washers and screws. Now, your shed has double protection against water.
If you are confident in your ability to do this yourself, you will obviously save a lot of cash.
Roofing a shed roof with a metal roof might cost you around $240 or more. Rather than spending money to hire someone to do the job for you, consider installing the roof yourself by following the tutorial above.
