Installing a metal roof can increase durability, energy efficiency, and resale value. This guide explains planning, materials, tools, step-by-step installation, safety, common mistakes, maintenance, and cost considerations for anyone researching putting on a metal roof.
| Topic | Quick Tip |
|---|---|
| Benefits | Long lifespan and energy savings |
| Roof Types | Standing seam vs. screw-down panels |
| Key Tools | Metal shears, drill, seamers |
Why Choose A Metal Roof
Metal roofing is popular because it offers longevity often exceeding 40–70 years, strong resistance to wind and fire, and improved energy efficiency due to reflective coatings. Homeowners considering putting on a metal roof often prioritize reduced long-term maintenance and lower insurance premiums.
Metal roofs also come in many aesthetic styles, from traditional corrugated panels to modern standing seam systems, making them suitable for different architectural designs.
Planning And Permits
Start by measuring the roof area and pitch to calculate material needs. Accurate measurement reduces waste and cost when putting on a metal roof.
Check local building codes and HOA rules; many jurisdictions require permits for re-roofing. Verify required underlayment, fastening patterns, and wind rating standards.
Types Of Metal Roofing
Common types include exposed fastener panels (screw-down), standing seam, metal shingles, and stone-coated steel. Each type affects installation complexity and warranty.
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- Standing Seam: Hidden fasteners, premium weather protection, requires specialized equipment.
- Exposed Fastener Panels: Easier DIY option, lower material cost, more vulnerable to fastener maintenance.
- Metal Shingles: Traditional look, modular installation, higher cost.
Materials And Components
Key materials for putting on a metal roof include metal panels, underlayment, roof felt or synthetic underlayment, starter strips, ridge caps, closures, flashing, fasteners, and sealants.
| Component | Purpose |
|---|---|
| Underlayment | Moisture barrier and secondary protection |
| Flashing | Seal roof penetrations and edges |
| Fasteners | Secure panels; may be exposed or concealed |
Tools Required
Essential tools for putting on a metal roof include a circular saw with metal cutting blade or tin snips, drill/driver, screw gun with depth-sensitive nosepiece, seaming tool for standing seam, chalk line, tape measure, and safety harnesses.
Using the right tools speeds installation and protects the panels from damage.
Safety And Weather Considerations
Always use fall protection (harness, anchor points) and non-slip footwear. Metal becomes slippery when wet, and panels can reflect sunlight intensely.
Avoid installing in high winds or when surfaces are icy. Work during moderate temperatures to prevent panel deformation and ensure proper fastening.
Step-By-Step Installation
Remove Old Roofing Or Install Over Existing Deck
If the roof deck is damaged, remove old material and repair sheathing. Some local codes allow metal roofing to be installed over one existing layer of shingles, but leaving old layers may hide deck issues.
Inspect And Prepare The Deck
Ensure roof sheathing is clean, dry, and structurally sound. Secure loose boards and replace rotten sections. Install roof edge drip, eave flashing, and ventilation per code.
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Install Underlayment And Ice/Water Shield
Lay ice and water shield in valleys and eaves where snow or ice damming is likely. Then install synthetic or felt underlayment across the deck. Proper underlayment improves leak resistance.
Install Starter Strips And Panels
Apply starter strips at eaves to align panels. For exposed-fastener panels, align the first panel and fasten per manufacturer spacing guidelines. For standing seam, ensure panels interlock and run continuous clips along the seam.
Fastening And Sealing
Use manufacturer-recommended screws with neoprene washers for exposed fasteners. For standing seam, use concealed clip systems and seaming tools. Seal around penetrations like vents and chimneys with compatible flashing and high-quality sealant. Do not overtighten screws to avoid crushing panel ribs.
Install Ridge Caps, Flashing, And Trim
Install ridge caps to finish the roof peak, ensuring proper ventilation allowances. Install sidewall and valley flashing, and use closures at panel ends to block pests and water.
Common Mistakes To Avoid
- Using Incorrect Fasteners: Wrong length or type causes leaks or panel movement.
- Skipping Underlayment: Increases risk of leaks and voids certain warranties.
- Poor Panel Alignment: Leads to aesthetic issues and increased water infiltration.
- Improper Cutting: Using abrasive blades that leave debris can cause galvanic corrosion.
Cost Considerations And ROI
Metal roofing costs vary widely: exposed-fastener panels are the most affordable, while standing seam and specialty finishes cost more. Labor often equals or exceeds material cost for professional installation.
Lifetime value is high: lower maintenance, energy savings from reflective finishes, and extended roof life can justify higher upfront costs. Consider local climate and energy rates when calculating ROI.
Maintenance And Longevity
Maintenance for metal roofs is relatively low. Recommended tasks include checking fasteners and sealants after major storms, clearing debris from valleys, and inspecting flashings annually.
Expect 40–70 years of service with proper installation and maintenance, depending on the metal type, coating, and climate exposure.
Warranty And Manufacturer Guidance
Review manufacturer warranties for finish and substrate corrosion coverage. Warranties often require adherence to specific installation practices and use of approved fasteners and accessories.
Retain installation records and product codes to support warranty claims and future resale value.
When To Hire A Professional
DIY installation is feasible for experienced, safety-equipped homeowners using exposed-fastener panels on simple roof layouts. Complex roofs, steep pitches, or standing seam systems generally justify professional installers with specialized tools.
Hiring a contractor ensures code compliance, accurate installation, and valid warranties when manufacturer terms require certified installers.
Cost And Materials Comparison Table
| System | Approx. Material Cost Per Sq Ft | Typical Lifespan |
|---|---|---|
| Exposed Fastener Panels | $3 – $6 | 30–50 Years |
| Standing Seam | $7 – $15+ | 40–70+ Years |
| Metal Shingles | $6 – $12 | 35–60 Years |
Frequently Asked Questions About Putting On A Metal Roof
Can A Metal Roof Be Installed Over Shingles?
In many areas, metal roofing can be installed over one layer of shingles if the deck is in good condition. Local code and manufacturer instructions must be followed.
How Noisy Is A Metal Roof?
Proper underlayment and solid sheathing reduce rain noise significantly. Metal roofs are quieter than many assume when installed correctly.
Does A Metal Roof Attract Lightning?
Metal roofs do not increase lightning strikes. They are non-combustible and can actually improve fire performance compared to combustible roofing.
How to Get the Best Roofing Quotes
- Prioritize Workmanship
A roof is one of your home’s most important investments. Always choose a contractor based on experience and reputation — not just price. Poor installation can lead to expensive problems down the road. - Compare Multiple Estimates
Don’t settle for the first quote you receive. It’s always a smart move to compare at least three bids from local roofing professionals. You can 877-801-4315 to get local quotes from roofing contractors in your area, available across the United States. - Use Negotiation Tactics
After selecting a trusted roofer, be sure to use our proven tips — How to Negotiate with Roofing Contractors — to secure the best possible final price without cutting corners.
Final Installation Checklist
- Confirm permits and code requirements
- Order correct panels and accessories
- Inspect and repair deck
- Use recommended underlayment and fasteners
- Follow manufacturer fastening patterns and sealing guidelines