# Steel Roofing Boise ID | Galvalume & G90 Panel Systems | Metal Roofing Boise

> Steel panel roofing in standing seam or exposed-fastener systems — the most common and most cost-effective metal roofing material for Treasure Valley homes and buildings, with a written per-square price before any work starts.

URL: https://metalroofingboise.net/steel-roofing-boise/

## Price

$800-$1600 roofing square (100 sq ft) installed. 2026 published national installed pricing for steel panel systems ($10-16/sq ft standing seam, $7-12/sq ft exposed-fastener, HomeGuide), depending on panel system chosen.

## What's included

- On-site inspection and a written per-square price before any work starts
- Steel panel system selection — standing seam or exposed-fastener — matched to budget and roofline
- Galvalume AZ50 or G90 galvanized coil coating, with Kynar 500/PVDF finish options
- Fastening system engineered for Boise's thermal swing, floating clip or manufacturer-spec through-fastened
- High-temperature synthetic underlayment and ice-and-water membrane where needed
- Custom-fabricated flashing and trim
- Attention to galvanic corrosion risk where steel panels meet dissimilar metal (copper gutters, etc.)
- Full site cleanup and haul-away

## Process

01. **Free on-site inspection** - We walk the roof and hand you a written per-square price for the steel system and finish that fit your roof.
02. **Permit and panel order** - We pull the permit and order steel panels in the coating and gauge your roof calls for.
03. **Install** - Underlayment, flashing, and panels go in per manufacturer spec, with attention to any dissimilar-metal contact points that could cause galvanic corrosion over time.
04. **Inspection and walkthrough** - Final inspection, cleanup, and we walk the finished roof with you.

## When it's needed

- Choosing between steel and aluminum for a new metal roof
- Existing lower-grade galvanized roof showing early edge corrosion
- Want the most cost-effective metal material without giving up durability

## FAQ

**Is steel or aluminum better for a Boise roof?**

Steel is the more common and typically more economical choice here, and Boise's inland, low-humidity climate doesn't demand aluminum's coastal corrosion resistance the way a marine environment would. Aluminum is worth considering mainly for weight-sensitive applications or specific finish preferences — see our steel vs. aluminum guide.

**Will my steel roof rust?**

Not under normal conditions with a proper Galvalume or galvanized coating — but lower-grade galvanized panels can show premature edge corrosion where something like sprinkler overspray regularly mists a lower roof or valley. We spec Galvalume or better specifically to avoid that.

**What gauge steel should I use?**

24-26 gauge is standard for standing seam residential work; exposed-fastener panels commonly run 26-29 gauge. Heavier gauge costs more but resists oil-canning and denting better — we'll recommend the right gauge for your roof and budget at the inspection.

**Does a steel roof lower my homeowners insurance?**

Some Idaho insurers offer a discount, particularly for Class 4 impact-rated steel panels — it varies by carrier, so it's worth asking yours directly. See our insurance guide for what to ask.