Installing a standing seam copper roof is a difficult task that requires precision and skill. It’s manageable for do-it-yourself enthusiasts, though, as long as they’re comfortable working on roofs. Learn how to install a standing seam copper roof, which is an especially durable, weather-resistant, and stylish roofing option, in our guide below.
Understanding Standing Seam Copper Roofs
Standing seam copper roofs are long-lasting, aesthetically pleasing, and especially weather-resistant. They consist of vertical panels that join together at raised seams that stand up from the roof’s surface. Read more about the benefits of this roofing type below.
Benefits of Standing Seam Copper Roofs
Standing seam copper roofs are among the most popular choices for residential and commercial buildings for the following reasons:
- Aesthetic value: The natural patina that develops on copper creates a unique appearance.
- Durability: Copper is highly resistant to corrosion and can last for decades if you maintain it properly.
- Energy efficiency: Copper reflects solar radiation, which helps to keep buildings cooler in the summer.
- Sustainability: Copper is recyclable and eco-friendly.
- Weather resistance: The standing seam design channels water away from the roof, which reduces the risk of leaks.
Minimum Slope Requirements
You must install a standing seam copper roof on a slope of at least 1/4 inch per foot or a 2% grade for it to function properly. The slope should be 3/12 inch or greater for optimal performance, though. This leads to proper water drainage and prevents water from pooling.
Gathering Tools and Materials for Copper Roof Installation
You’ll need the following materials and tools to install a standing seam copper roof:
- Chalk line
- Copper clips and fasteners
- Copper panels that are custom-made to fit your roof
- Copper valley flashing
- Measuring tape
- Metal snips
- Pliers
- Roofing felt
- Underlayment
- Vice grips
- Wooden mallet
Underlayment Installation for a Standing Seam Copper Roof
The first step in preparing the roof for installation is installing the underlayment. This layer provides protection against water infiltration and helps to create a smooth surface for the copper panels. Follow the steps below.
- Clean the roof deck, and make sure it’s dry and free of debris.
- Roll out the roofing felt, and overlap each course by at least 2 inches.
- Secure the felt with roofing nails, and cover them with the next course.
- Install a waterproof membrane in valleys and around any roof penetrations.
Importance of Proper Underlayment
Proper underlayment protects the roof deck from moisture and provides a level surface for the copper panels. High-quality underlayment helps prevent issues such as mold, rot, and leaks, and extends the life of your copper roof.
Installing the Valley Flashing
You must install valley flashing to direct water away from the roof’s valleys. This type of flashing directs water and prevents leaks.
Steps to Install Valley Flashing
- Measure and mark the area onto which you’ll install the valley.
- Cut the copper flashing to size, and allow for proper overlap.
- Bend the flashing along its center to create a slight V-shape.
- Install the flashing, and make sure it aligns properly with the valley.
- Secure the flashing with copper clips, and be careful not to puncture the copper.
- Make sure the flashing extends slightly beyond the eaves so that it channels water away from the building.
- Fasten the flashing securely, and use a high-quality sealant to reinforce vulnerable areas.
Installing the Copper Panels
Once you’ve completed the preparation, you can install the copper panels. Follow the steps below.
Panel Placement and Attachment
- Begin at the eave of the roof, and work your way up to the ridge.
- Place the first panel down, and make sure it’s square with the roof edge.
- Secure the panel using copper clips, which allow for thermal expansion and contraction.
- Continue installing panels, and interlock each with the previous panel’s standing seam.
Seaming the Panels
Once you’ve placed the panels, close the seams so that you create a watertight seal. Follow the directions below.
- Use a seaming tool to crimp the interlocking edges between adjacent panels.
- Start at the bottom of the roof and work your way up. Keep consistent pressure.
- Make sure you have properly closed and aligned all seams.
Installing Trim and Flashing
Follow the steps below to properly install trim and flashing, which protect vulnerable areas of the roof and create a polished look.
Ridge Caps and Hip Covers
- Measure and cut the ridge caps or hip covers so that they fit the roof’s dimensions.
- Install the ridge caps over the standing seams so that they properly overlap.
- Secure the caps with clips, and leave room for potential expansion and contraction.
Eave and Gable Trim
- Install eave trim along the bottom edge of the roof to direct water into the gutters.
- Attach gable trim to cover the edges of the panels at the roof’s sides.
- Use copper fasteners to secure the trim so that it fits snugly against the panels.
Finishing Touches for a Standing Seam Copper Roof Installation
The final steps in installing a standing seam copper roof include improving the appearance and functionality of the roof.
Sealing and Weatherproofing
- Apply a high-quality sealant to any exposed fasteners or weak points.
- Seal any gaps within flashing and trim.
- Inspect the entire roof, and attend to any issues.
Cleaning and Inspection
Once you’ve completed the installation, clear the roof’s surface of any debris or fingerprints. Perform a thorough inspection to make sure you’ve properly installed all necessary components, and use a garden hose to test how successfully the roof can shed water. Address any issues you notice immediately.
Maintenance and Care of Your Standing Seam Copper Roof
Perform regular maintenance and inspections to keep your roof in good shape. Perform visual inspections twice a year, during which you should look for the following potential issues:
- Clogged gutters or downspouts
- Damage from fallen branches or debris
- Loose or damaged panels
- Signs of water infiltration
Cleaning Recommendations
A copper roof is relatively low-maintenance, but occasional cleaning can help you to maintain its beautiful appearance. Use a soft-bristled brush and a mild soap solution to remove dirt and debris. Avoid using harsh chemicals or abrasive materials that could damage the copper. Rinse thoroughly with clean water once you’re done cleaning.
Preventative maintenance should include regular cleaning and clearing of gutters and downspouts to prevent water buildup and potential damage. Trim any overhanging branches to minimize the risk of debris falling on the roof.