Metal roofing is an excellent alternative to asphalt shingles due to its durability and aesthetic appeal. It can, however, be challenging to install without proper guidance. Knowing the correct process and materials can significantly enhance the longevity of your metal roof.
Here’s a step-by-step procedure on how to install metal roof components efficiently and correctly.
Tools Required
- Basic Carpentry Tools
- Metal Snips
- Hand Seamer
- Fall Protection
- Metal Shears
- Drill/Driver
- Angle Grinder
Materials Required
- Metal Roofing Panels
- Ice and Water Shield
- Roofing Nails
- Eave Trim
- Gable Trim
- Ridge Cap
- Sidewall Flashing
- Self-Tapping Roofing Screws
- Metal Roofing Sealant
- Inside Foam Closure Strips
- Outside Foam Closure Strips
- Butyl Tape
- Roofing Vent Boots
- Tar Paper
- Building Paper
How to Install a Metal Roof
Step 1: Apply the Underlayment
Start by laying down an ice and water shield on your plywood roof deck. This underlayment acts as a protective barrier against moisture. Then, cover the entire roof with tar paper or roofing felt. Secure this layer with staples or roofing nails. Ensure the underlayment is flat and wrinkle-free for effective installation.
Step 2: Order Panels to Fit
Measure the dimensions of your roof to order appropriate lengths of metal roofing panels. Include the necessary overhang in your measurements. Make use of modular panels for easier installation. Order panels that extend from the ridge to the eave to reduce the need for seams.
Step 3: Bend Trim Ends Closed
Using metal snips or a compatible blade, bend the ends of your trim pieces closed. This process is crucial for preventing water from seeping into the gaps. Securely fasten these trim pieces around the edges and ridges of your roof. Proper bending technique ensures a watertight seal and contributes to the longevity of your roof.
Step 4: Fasten Eave Trim
Install the eave trim along the roof’s outer edges to direct water into the gutters. Fasten this trim with the appropriate roofing screws. Use neoprene washer heads to ensure a secure seal. Align the eave trim properly for effective water flow and a polished look. Spacing the screws consistently ensures stability and durability.
Step 5: Splice and Overlap Trims
To join multiple trim pieces, apply a strip of sealant tape where they overlap. Ensure the trims are spliced securely for an uninterrupted water barrier. Press the trims together firmly to activate the adhesive properties of the tape. Check for alignment and adjust as necessary. Reinforce with additional screws if needed.
Step 6: Snap a Square Reference Line
Before placing the panels, snap a square reference line across the roof. This line helps ensure your panels are installed straight. Use a chalk line to create a visual guide from ridge to eave. Align the first panel with this line to maintain uniformity. Double-check measurements before proceeding.
Step 7: Set the Panels
Start laying the metal roofing panels from the eave and work your way up to the ridge. Place the first panel along the reference line for accuracy. Overlap the edge of each panel with the next one as you proceed. Secure each panel with metal roofing screws every 12-16 inches. Use foam closure strips under the panels for added waterproofing.
Step 8: Drive Screws Just Right
When driving the screws, ensure they are tight enough to hold the panels but not so tight that they deform the metal. Use a drill/driver with a controlled torque setting. Position the screws symmetrically along the panel ribs. Drive screws through the built-in fastener flange for hidden fastener panels. Inspect each screw for proper placement.
Step 9: Overlap the Panels
Overlap the subsequent metal panels by at least one rib to ensure proper sealing. Use self-tapping roofing screws to attach the panels. Apply metal roofing sealant between the overlapping areas. It prevents water from getting under the metal roof panels. Make sure each overlapping section is securely fastened.
Step 10: Cover the Rake Edge
Install gable trim along the rake edges of your roof. This trim not only enhances the aesthetics but also provides extra protection against wind and rain. Secure the gable trim with additional screws. Ensure the trim covers the edge completely. Any exposed edges need to be sealed with butyl tape.
Step 11: Secure the Ridge Cap
Finally, install the ridge cap to cover the roof’s peak. Lay down a foam closure strip along the ridge before placing the cap. Secure the ridge cap with screws and ensure they penetrate deeply into the underlayment. The ridge cap should be aligned perfectly to prevent leaks. Inspect the installation for any gaps or misalignments.
How to Install Metal Roofing Over Plywood
- Measure the plywood roof deck to determine the required number of panels.
- Ensure the plywood sheathing is in good condition and securely fastened.
- Apply an ice and water shield layer for added moisture protection.
- Install the metal roofing panels as described above.
- Fasten with appropriate screws and sealant for long-lasting results.
How to Install Metal Roofing on a Shed
- Start by installing plywood sheathing if not already present.
- Apply a water shield or roofing felt over the plywood.
- Measure and cut metal panels to fit the dimensions of the shed.
- Fasten the metal panels with screws through the built-in fastener flange.
- Seal any overlaps and install trim around the edges for protection.
Planning for a New Roof Installation? Contact Roofs by Warren Today
Metal roofs are a durable and long-lasting option for both residential and commercial properties. They offer superior protection against the elements while enhancing the aesthetic appeal of your building. However, professional installation is crucial for optimal results.
If you are planning for a new roof installation, Roofs by Warren is here to help. Our team specializes in high-quality metal roofs, along with expert siding and gutter solutions. We ensure your property is both well-protected and visually appealing.
Contact us today for a comprehensive quote, or visit our website to request an online estimate. Let Roofs by Warren handle your roofing needs with professionalism and expertise.