Class A fire-resistant roofing carries the highest fire-resistance rating and is required for new and replacement roofs in Colorado's high-hazard wildland-urban interface under the CWRC. Blaze Blocker installs Class A shingles, metal, tile, and composite systems, and provides a completion certificate for your insurer.
A Class A roof resists flame spread and ember ignition — the leading roof failure mode in wildfire. Pairing it with ember-resistant vents and clean gutters protects the whole roof assembly.
Why your roof comes first
A roof presents the largest horizontal surface for wind-driven embers to land and collect. Ignition here can spread to the entire structure before flames ever reach the property.
Replacing or upgrading to a Class A assembly is often the single highest-impact hardening step — and increasingly a condition of insurability in high-risk Colorado ZIP codes.
What does a Class A fire rating mean?
Roof coverings are tested for fire resistance under the ASTM E108 / UL 790 standard and assigned one of three classes. The class describes how well the roof resists fire spreading to it from an outside source — exactly the threat a wildfire poses through wind-blown embers and radiant heat.
- Class A — the highest rating, offering the greatest resistance to severe fire exposure. This is what is recommended — and increasingly required — for homes in Colorado’s wildland-urban interface.
- Class B — moderate fire resistance, suitable for lower-exposure conditions.
- Class C — light fire resistance only. Untreated wood shakes and shingles often fall here or carry no rating at all, which is why they are a leading cause of home loss in wildfires.
An important point most homeowners miss: a Class A rating applies to the whole roof assembly, not just the shingle. The underlayment, roof deck, drip edge, valleys, and the detailing where the roof meets walls and vents all affect real-world performance. We install the complete system to the rating — not just the top layer — and align it with the Colorado Wildfire Resiliency Code. For budgeting, see what wildfire home hardening costs in Colorado.
Class A roofing systems we install
- Class A architectural shingles — Cost-effective Class A protection with a wide range of profiles and colors.
- Metal roofing (steel & aluminum) — Non-combustible, long-lived, and excellent at shedding embers.
- Concrete & clay tile — Durable, non-combustible systems suited to many Colorado homes.
- Synthetic & composite roofing — Class A composites that mimic wood shake or slate without the fire risk.
All materials and installation methods meet the Colorado Wildfire Resiliency Code (CWRC). We document completed work so your insurer can use it for premium review, and align every project with the IBHS Wildfire Prepared Home™ standard.
What a roofing project looks like
We start with a free on-site assessment of your existing roof, underlayment, edge details, and vents. Embers exploit gaps — at the eaves, valleys, and vent penetrations — so we address the full assembly, not just the surface.
You receive an itemized quote, a clear timeline, and on completion, documentation your insurer can use for premium review and for IBHS Wildfire Prepared Home™ certification.
Common Questions
Is Class A roofing required in Colorado?
What is the most fire-resistant roofing material?
Can you re-roof an existing home, or only new builds?
Will a new roof lower my insurance premium?
How long does a fire-resistant roof last in Colorado?
Does a metal roof attract lightning?
What roofing is best for Colorado mountain homes?
Serving Colorado's Wildfire-Prone Communities
From the Front Range foothills to mountain communities, we serve homeowners across Colorado's highest wildfire risk areas.
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Get in touch today for a free wildfire home assessment. No job is too big or too small for our expert team.