Metal roofing is a long-term investment that offers durability, energy efficiency, and great visual appeal. But here’s the catch: even the best materials won’t perform well if they’re installed incorrectly. At Aces Roofing, we’ve seen firsthand how poor installation can lead to problems, sometimes just months after a new roof goes on.
If you’re considering metal roofing for your home or business in the Comox Valley, here’s what you need to know about common installation mistakes—and how to avoid them.
1. Using the Wrong Fasteners
Metal roofing panels need specific fasteners designed to flex and hold under changing weather conditions. Using the wrong fasteners, or not installing them correctly, can cause leaks, rust, and even panel uplift during high winds. Overdriven or underdriven screws are also a common issue that compromises your roof’s integrity.
The fix: Always work with an experienced installer who knows exactly which fasteners to use and how to apply them to meet manufacturer specifications.
2. Skipping Underlayment
Some people assume metal roofs don’t need underlayment because the metal is water-resistant. That’s a costly assumption. Underlayment acts as a secondary barrier against moisture, especially in coastal climates like ours, where rain and humidity are common.
The fix: Ensure your roofer includes a high-quality underlayment—especially in valleys, around chimneys, and at roof edges.
3. Poor Panel Alignment
Even small misalignments during installation can throw off the entire look and function of a metal roof. Misaligned panels can create gaps, allow water infiltration, and affect how the roof expands and contracts with temperature changes.
The fix: Choose a roofing company that prioritizes precision and takes time to measure, align, and secure each panel properly.
4. Ignoring Expansion and Contraction
Metal naturally expands and contracts as temperatures change. If this isn’t factored into the installation—through proper spacing, floating clips, or slotted fastener holes—it can lead to buckling, fastener damage, or even panel warping.
The fix: Make sure your roofer accounts for thermal movement in their installation strategy.
5. Inadequate Flashing or Sealant
Poorly installed flashing is one of the leading causes of leaks in metal roofing. It’s essential around roof edges, chimneys, skylights, and vents—anywhere water might try to sneak in.
The fix: Hire roofers who know how to properly install flashing and use high-quality, UV-resistant sealants.
Choose Experience Over Guesswork
Metal roofing isn’t a DIY weekend project—or a job for an inexperienced crew. Mistakes made during installation often void warranties and shorten the life of your roof.
Considering a Metal Roof? Let’s Do It Right the First Time
At Aces Roofing, we specialize in expert installation of metal roofs for homes and businesses across the Comox Valley. We follow manufacturer guidelines, use trusted materials, and bring decades of experience to every project.
Book your free quote today and make sure your metal roof is installed to last.
We have been delivering high-quality, affordable roofing services in Courtenay, BC for more than 10 years.