How to Install a Tin Roof
If your local building codes allow, you can install a tin roof instead of a normal shed or garage roof to save money. A tin roof, while relatively inexpensive, still maintains its reputation for excellent durability. Install one by following these simple instructions.
Disclaimer: Before completing this project, check with your local building codes and ordinances to ensure installing a tin roof, instead of another type of roof, where you want to is legal. If it is, ask for any specifications regarding its measurements or extra steps you must take to ensure that it is up-to-code.
Step 1 – Select a Tin-Roof Type
Decide what type of tin roof you want by selecting either an R-panel or V-crimp style. For an R-panel style, you will need to install it with 5/16 inch lap screws; however, with a V-crimp style, you don’t need to use any screws.
Step 2 – Take Measurements
Measure the roof length and width on each side to determine how much edging you will need to install. Then, measure the roof height by adding 2-4 inches for the overhang.
Step 3 – Buy the Materials
With your measurements, visit your local roofing supply store to purchase the materials you will need. Don’t be afraid to ask an employee for help and recommendations.
Step 4 – Remove the Current Roof and Line It
Remove all of your old shingles and paper, down to the roof planking, before installing the tin roof. The process you will use to remove the shingles will depend on their type. For instance, you can use a pry bar or shingle ripper and the appropriate safety gear to remove asphalt shingles. Then, use new tar paper or felt to line the roof.
Step 5 – Install Slat Boards and Metal Edging
Install slat boards to the roof so that you can easily attach the new tin. Lay the slats at 2-foot intervals length-wise, as you work from the roof’s bottom and upward. Secure the slats with 3-inch metal-to-wood screws. Then, nail the metal edging by using a hammer and roofing nails.
Step 6 – Lay Tin Panels
Screw the first panel by using wood screws at 2-foot intervals, following the slat boards as a guide along the center and inside edge of the sheet only.
Step 7 – Overlap the Panels
The second and subsequent sheets need to overlap the ones before them. If they are V-crimp, one crimp in the sheet above will overlap one crimp in the sheet below. When using R-panels, one ridge should overlap another panel’s ridge.
Step 8 – Secure Panels to Slat Boards
Next, secure each panel to the slat boards. Complete this step by using 1/4 inch screws every 2 feet.
Step 9 – Cut Along the Edge
The last panel will need to be cut to fit when you reach the roof edge. Wear the proper safety gear, like gloves, and use metal snips to cut it. Mark the ridge or crimp that runs along the roof edge with a chalk line to guide your tin cutter and cut before screwing the last panel in. Then, repeat this step for the other side.
Step 10 – Install Screws for R-Panels
If you’re using R-panels, you must install them by using 5/16 inch lap screws every 4 feet, where the metal sheets will overlap.
Step 11 – Install the Trim
Install metal trim along the roof edge and across the peak. Notch the trim to lay it over the peak, and secure it with 1/4 inch metal-to-wood screws. If you used V-crimp style tin, you are finished. If you used R-panels, complete the last two steps.
Step 12 – Install R-Panel Closures
Install your R-panel closures that are 36-inch foam-rubber lengths with self-adhesive strips. Push them into the openings to prevent animals from entering. Make sure to screw the bottom of all sheets down.
Step 13 – Install an R-Panel Ridge
Screw the R-panel ridge at the high point every 2 feet using 5/16 inch lap screws. When you're finished, you may paint the tin roof if you'd like.