08/08/2026
1. Why Choosing the Right Roofing Contractor Matters
A qualified contractor must demonstrate:
Knowledge of local building codes (IRC, IBC, and local amendments)
Experience with metal roof systems, not just shingle installations
Proper installation of all system components, including underlayment, flashing, fasteners, closures, and drip edge
Ability to document installation steps for warranty and insurance purposes
Understanding of manufacturer specifications, which often exceed minimum code
Metal roofing is a precision system. Incorrect installation of even one component—especially drip edge—can create functional deficiencies and future leak points.
2. Code Requirements for Drip Edge (Key Issue You Mentioned)
Drip edge is not optional. It is a code‑mandated component on most roof systems, including metal.
IRC R905 and R905.10 (Metal Roofs) require:
Drip edge at eaves and rakes
Installed over underlayment at the rake
Installed under underlayment at the eave
Minimum 2-inch projection over the roof deck
Proper fastening to prevent wind uplift
Continuous installation with no gaps that allow water intrusion
A contractor who does not understand these requirements is not qualified to install a metal roof.
3. Why Drip Edge Is a Big Issue
Drip edge controls water flow at the perimeter. If it is missing, improperly installed, or undersized, you get:
Water running behind fascia
Saturation of decking edges
Premature rot and deterioration
Wind-driven rain intrusion
Compromised underlayment performance
Increased risk of interior leaks
Failure to meet code and manufacturer warranty requirements
On metal roofs, drip edge also helps maintain proper panel alignment, edge rigidity, and wind resistance.
4. Components a Qualified Contractor Must Install Correctly
A proper metal roof installation includes:
Drip edge (code-required)
Eave trim and rake trim
Underlayment (synthetic or high-temp depending on system)
Closure strips at panel ends
Properly seated fasteners with correct torque
Flashing at walls, chimneys, and penetrations
Sealant at laps and penetrations
Correct panel layout and fastening pattern
Ridge caps with appropriate venting (if applicable)
Missing or improperly installed components convert a new roof into a future claim.
5. How to Identify a Contractor Who Knows What They’re Doing
Ask them:
Which code section governs metal roof drip edge installation?
Do you install drip edge under the underlayment at the eave and over it at the rake?
Do you follow manufacturer fastening patterns or “just eyeball it”?
Do you use closure strips at panel ends?
Can you provide photos of each installation stage?
Do you provide a workmanship warranty?
A qualified contractor will answer confidently and correctly.
An unqualified one will hesitate, generalize, or dismiss the importance of drip edge.
6. How You Can Use This in Claims or Appraisal
If a contractor failed to install drip edge or installed it incorrectly, you can state:
The roof does not meet code
The roof does not meet manufacturer specifications
The installation creates functional deficiencies, not cosmetic issues
The contractor’s work voids warranty and increases risk of water intrusion
