Roofing materials, compared for Colorado

Most Colorado homes have asphalt shingles, and most roof decisions here come down to three forces: hail, wind and wildfire. This page helps you figure out what you have now, how the options compare, and which local rules might narrow your choices before you ever talk price.

Each material has its own page with more detail. If you're not sure how old your roof is or how much hail it has seen, the free Roof Report pulls the hail history for your ZIP.

Identify your roof from the ground

You don't need a ladder. Stand across the street, or use binoculars or your phone's zoom, and look for these cues.

• 3-tab asphalt shingles look flat and uniform, with evenly spaced slots that make a neat brick pattern. They were the standard on homes built before about the 2000s and are less common on new roofs.
• Architectural asphalt shingles have a layered, uneven look with shadow lines, as if the shingles were thicker in places. They have no regular slots. Most Colorado roofs today are this type.
• Class 4 impact-resistant shingles usually look exactly like architectural shingles. You can't tell from the ground. Check your paperwork, your permit or the shingle wrapper if any was left in the garage.
• Standing-seam metal shows long, flat panels running from ridge to eave, separated by raised ribs with no visible screws.
• Exposed-fastener metal has corrugated or ribbed panels with rows of screw heads across the surface. It's common on barns, sheds and some mountain homes.
• Stone-coated steel is shaped to look like tile, shake or shingles but has a sandy, textured finish and crisp, thin edges.
• Tile is thick and heavy-looking. Clay is often terra cotta red or orange, and concrete comes in many colors. Profiles range from S-shaped barrel tile to flat slabs.
• Natural slate is thin, flat stone with slight color variation (gray, green, purple, black) and sharp edges. It's found mostly on older and historic homes.
• Synthetic slate or shake looks like slate or cedar but is more uniform in color and thickness than the real thing.
• Wood shake is brown when new and weathers to silver-gray, with irregular thickness and rough, split surfaces.
• Flat or low-slope roofs are often invisible from the street. If you can see one from a window or a neighbor's second floor, look for a white or gray sheet (TPO), black rubber (EPDM), a granulated rolled surface (modified bitumen) or gravel (built-up).

How the materials compare

Life ranges below are InterNACHI's national guideline estimates, not promises. In hail country, a storm often ends a roof's life long before age does. Costs are This Old House's Colorado per-square-foot averages, which are rough and tend to run low for full insurance-scope jobs on the Front Range.

Hail and weight descriptions are general trade knowledge except where a figure is given. Concrete tile and asphalt weights are from a 2001 Journal of Light Construction article. Cost figures were updated June 2026 and are averages, not quotes; see roof costs for more.

How to choose for Colorado

Start with the rules, because they can make the decision for you. Then weigh hail, weight and budget.

Hail

The Front Range sits in what the insurance industry calls Hail Alley, and damaging hail season runs from mid-April to mid-September. That makes impact resistance the first question for most homeowners. A Class 4 rating improves your odds, but it's a lab test, not a warranty. Independent testing by IBHS in November 2025 rated none of 24 impact-resistant shingles "Excellent." Read Class 4 roofs before you pay extra, and see Colorado's climate for how hail, wind and sun wear roofs here.

Local Class 4 mandates

Some places now require Class 4 asphalt shingles on replacements. As of October 2026, these include:

• Fort Collins, when 50% or more of the roof is replaced
• Unincorporated Larimer County, for replacements and repairs over 25%
• Unincorporated Boulder County, for permits submitted on or after March 31, 2025 (not the City of Boulder)
• Johnstown, with exceptions for matching and repairs
• Lafayette, as reported by the Colorado Municipal League

We found no such requirement for Denver, Aurora, Colorado Springs or Lakewood. Rules change, so confirm with your building department.

Wildfire and Class A

A Class A fire rating is the highest rating under the ASTM E108 / UL 790 test. Under the Colorado Wildfire Resiliency Code, homes in Low or Medium/High hazard areas on the state map need a Class A roof covering or assembly, plus ember blocking, metal valleys and noncombustible gutters. Local governments with wildland-urban interface areas were due to adopt the code by April 1, 2026. When it applies to a re-roof varies; Centennial, for example, applies it to replacements of 25% or more of the roof. Fort Collins requires Class A whenever the roof material changes. This matters most for wood shake owners.

Weight and structure

Tile and slate are several times heavier than asphalt, and Colorado's snow loads add to the burden at higher elevations. If you're switching to a heavier material, have an engineer check the framing first. Going lighter, such as from shake to shingles, often means adding solid decking instead.

HOA rules and historic districts

Many homeowners associations limit roof materials, colors or profiles in their covenants. Get written approval before you sign a contract, especially if you want metal or a change of color. In Denver, homes in landmark or historic districts also go through a roofing design review.

Insurance

Some insurers discount impact-resistant roofs, but Colorado law doesn't require it and amounts vary. Ask your agent before you choose, and read your policy for cosmetic-damage exclusions if you're considering metal. Our insurance guide explains what to ask.

Material guides

• Asphalt shingles: 3-tab vs architectural, wind ratings and what ages them
• Class 4 impact-resistant roofs: the tests, the ratings, mandates and grants
• Metal roofs: standing seam, exposed fastener and stone-coated steel
• Tile roofs: clay vs concrete, weight and repairs
• Slate roofs: long life, specialist care
• Synthetic slate and shake: composites and how to judge them
• Wood shake: looks, fire concerns and replacement
• Flat and low-slope roofs: TPO, EPDM, modified bitumen and built-up

Common questions

What is the most common roofing material in Colorado?

Asphalt shingles, by a wide margin, mostly in the architectural (dimensional) style. That's what most Front Range neighborhoods have, and what most insurance replacements put back. See asphalt shingles.

What roof holds up best to hail?

No common material is hail-proof. Class 4 impact-resistant shingles, stone-coated steel and some synthetics are built and tested for impact, but they can still be damaged, and metal can dent cosmetically. Read Class 4 roofs for what the ratings do and don't mean.

Can I switch from asphalt to tile or slate?

Often, but both are much heavier than asphalt. Have an engineer check that your framing can carry the extra weight plus Colorado snow loads before you commit.

Do I need a Class A fire-rated roof?

If your home is in a mapped wildfire hazard area under the Colorado Wildfire Resiliency Code, a Class A roof covering or assembly is required, though when it kicks in varies by town. Some places, like Fort Collins when the roof material changes, require it regardless. Check with your building department.