Buying a Roof
What a Standing Seam Roof Really Costs (and Why Bids Vary So Much)
Panel gauge, finish, trim packages, tear-off, and roof complexity — the real reasons two bids on the same house can be thousands apart.
Homeowners call us all the time with two bids on the same roof that are $15,000 apart. Both say "standing seam." Both use the word "Galvalume." One is half the price of the other. So which one is honest? Usually neither is lying — they're pricing very different roofs.
Panel gauge and finish
Steel comes in gauges. 24-gauge is what belongs on a house. 26-gauge is thinner, cheaper, and more prone to oil-canning. Finish matters even more. A true PVDF (Kynar 500) paint system carries a 30–40 year finish warranty and holds its color. SMP or "polyester" finishes look identical the day they're installed and fade noticeably within a decade. Two bids, same panel profile, one uses 24ga PVDF and the other uses 26ga SMP — that alone can be a five-figure spread.
Trim and flashing packages
The panels are the cheap part. Ridge caps, rake trim, valleys, endwall and sidewall flashing, pipe boots, snow retention — that's where a metal roof actually gets built. A bid that quietly assumes stock trims, face-screwed ridge, and rubber pipe boots will come in thousands lower than a bid that includes hemmed rakes, vented ridge assemblies, and high-temp silicone or soldered flashings. It's the same roof on paper and a completely different roof in five years.
Tear-off vs. overlay
Overlaying metal on top of old shingles is faster and cheaper. It also traps heat, hides rotted decking, and eliminates the chance to install proper underlayment. We tear off. That costs more up front and is the reason the roof still works twenty years in.
Roof complexity
A simple gable is one thing. Multiple valleys, dormers, sidewall transitions, a chimney, and skylights are another. Every transition is hand-flashed. A cut-up roof can easily take twice the labor of a rectangle of the same square footage. Any bid that doesn't reflect that either didn't measure or is planning to caulk its way through the details.
The cheapest bid
The cheapest bid usually cuts the details this site is about — the transitions, the trims, the underlayment, the flashings. The panels will still look great on day one. The failures show up on year seven, long after the check has cleared.