Serving the Colorado Front Range with offices in Denver and Colorado Springs(303) 524-1000google guaranteed bannerRequest free inspection


Class 4 impact resistant shingle roofing in the Denver Metro Area

Hailstorms damage homes across the Denver metro area each year. Class 4 shingles, also referred to as Class 4 impact resistant shingles, are the best choice homeowners can make to protect their roof. There is no such thing as a hail proof roof, but impact resistant roof shingles offer the best protection against future storm damage.

Metro City Roofing is the best Colorado roofing company to serve all your roofing needs with quality installation and superior customer service. We offer a FREE UPGRADE to your next Class 4 shingle roof.


99% success rate insurance claim approval when we recommend you file an insurance claim after your free inspection


$0 additional cost beyond your insurance deductible with no hidden surprises throughout your entire roof replacement process


28% average savings on homeowners insurance premiums with your free upgraded impact resistant shingles


The Best Class 4 Hail Storm & Wind Resistant Shingles

Colorado homeowners interested in upgrading their asphalt roof shingles often ask, what are the best Class 4 shingles?

There is no single best brand of Class 4 shingles. Manufacturers include Owens Corning, GAF, CertainTeed, Malarkey, and more. Asphalt shingles are manufactured to meet industry-defined standards. Impact resistant shingles with a Class 4 rating are designed and tested to provide better quality, durability, and overall resistance to hailstorms, as determined by independent testing company Underwriter Laboratories (UL). UL 2218 is the Class 4 hail rating for asphalt roofing shingles that are tested by dropping a 2-inch steel ball multiple times from 20 feet, simulating hail.

Metro City Roofing offers a FREE UPGRADE to Class 4 shingles for our roof replacement customers. Homeowners can save 28% on their homeowners insurance policy with their new Class 4 impact resistant roof. This represents an $863 average savings.

Beyond hail, strong winds can have a significant impact on a roof. Wind that hits the side of a home will travel up and over the roof creating pressure on the roofing materials. This uplift pressure may lift shingles off a roof deck. Class 4 hail resistant shingles are also designed to be wind resistant shingles, able to withstand high winds up to 130 miles per hour. The American Society for Testing Materials (ASTM) provides these shingles with the ASTM D7158 for wind resistance.

Impact resistant shingles (also referred to as Class 4 shingles) are roofing products specially designed to withstand extreme winds, snow, and hail damage. Class 4 shingles are manufactured with an SBS (styrene-butadiene-styrene)-modified asphalt formula, which is also called rubberized asphalt. These impact resistant shingles earn an impact resistance rating by UL, specifically the UL 2218 classification, which is the highest impact resistance rating.

When you have roof damage and need a roof replacement, some products offer better protection – and that’s impact resistant shingles. The professionals at Metro City Roofing look forward to discussing the merits of each brand and various design and color options in more detail that best suit your home and budget.

Layers of Class 4 impact resistant shingles by Owens Corning in brick red color

Impact resistant shingles better withstand hail damage Most insurance companies give discounts for these shingles

Class 4 Shingles History, Testing, and Ratings

No Hail Resistant Roof Standard Until 1997

Until 1996, it was common knowledge that certain roofing materials offered better wind and hail damage protection than did others, but there was no defining standard in the roofing industry. In 1996, several property insurance experts partnered with the Institute of Business and Home Safety (IBHS) and the Underwriter’s Laboratory (UL) to develop the UL 2218 classification – the Standard for Impact Resistance of Prepared Roof Covering Materials. UL 2218 became the national standard for roof impact resistance with a material rating from Class 1 through 4, with a Class 4 rating as the toughest. The result is based on a roofing shingle’s resistance to impact testing with steel balls simulating 90-mph hailstones of varying sizes.

Roofing manufacturers began producing affordable Class 4 shingles for residential roof replacement projects previously unavailable before 1997. Insurance companies within established hailstorm locations started an information campaign informing policyholders, agents, roofers, and state insurance departments about the advantages and impact of these new hail impact resistant shingles, which offered reduced roof maintenance and replacement costs.

With impact resistant shingles (also called modified asphalt shingles), the rubber-like quality prevents hail from fracturing the fiberglass mat and eliminates early deterioration. Further, the flexibility increases wind resistance, making it harder for high winds to blow these shingles off a roof when properly installed.


80% of US houses have asphalt shingle roofs

Class 4 roof shingles have been manufactured from aluminum, copper, plastic, and resin for years. The higher price has been the primary disadvantage for many homeowners and multi-family property managers. With the modified asphalt shingle, many homeowners became able to better protect their roof and home against wind and hail.

UL 2218 Becomes the Impact Resistant Roof Standard

Underwriter Laboratories’ steel ball test simulates a hailstone’s impact using a steel ball on a roof shingle, focusing on the shingle’s most vulnerable areas, including the edges, corners, unsupported sections, and joints.

The simulation includes the following:

  • Steel balls are dropped – from 12 feet for a 1.25-inch ball and from 20 feet for a 2-inch ball
  • Impact resistant shingles remained intact, even with the 2-inch steel ball
  • To successfully pass the UL 2218 standard, the roof covering, the exposed surface, the back surface, and underneath layers all must show no evidence of tearing, fracturing, cracking, splitting, or rupturing.
class 4 impact resistance test

Non-impact resistant shingles will endure cracks and ruptures from the same steel ball test. The roof shingles granules will be knocked off, leaving it exposed to harmful UV damage. Over time, UV rays will degrade a roof and make it vulnerable to leaks.

This hail simulation test is performed on new shingles – not aged shingles that may already be brittle with age or more susceptible to hail damage. Another factor to consider for your home is your roof’s pitch, or angle. Steeper pitched roofs are less vulnerable to most hailstorms than lower pitched roofs. Additional considerations include the type of underlayment used, the existing roof decking condition, tree coverage, and more.

A Class 4 rating offers the best impact resistance for your asphalt shingle roof

The following lists the four impact ratings and the description of the sample’s impact.

Sample did not crack when hit twice in the same spot by a steel ball 1.25 inches in diameter
Sample did not crack when hit twice in the same spot by a steel ball 1.5 inches in diameter
Sample did not crack when hit twice in the same spot by a steel ball 1.75 inches in diameter
Sample did not crack when hit twice in the same spot by a steel ball 2.00 inches in diameter

We manage every detail of your roof replacement for you and treat your home like our own.

Aerial view of a recent roof replacement with light brown asphalt shingles and cream color exterior by Metro City Roofing in Denver, Colorado

Denver home with Class 4 shingles Specially designed to withstand extreme winds, snow, and hail damage

At Metro City Roofing, we start with a FREE ROOF INSPECTION. Our skilled professionals are also licensed adjusters who will inspect your roof just like your insurance company’s inspection. Our team will also gladly inspect the homes of past customers to ensure their roof continues to operate optimally following a hailstorm.

Request free roof inspection


Why Class 4 Impact-Resistant Shingles are Worth The Investment?

If you want added protection for your home and like saving money on your insurance, then Class 4 roof shingles are a smart investment. And there’s no better roofing company in Denver metro for quality installation and superior customer service than Metro City Roofing.

In general, a roof with Class 4 impact resistant shingles have many advantages and is a worthwhile investment because of the added protection and the material’s longevity. The need for impact resistant shingles, however, largely depends on where you live. In a hail-prone area like Colorado, homeowners need this type of hail resistant roof.

Following a hailstorm, you may notice your Class 4 roof shingles have some minor damage and granule loss. The real value is that impact resistant shingles are designed for strength in these extreme weather conditions, are much less likely to crack, and reduce the possibility of water entering a home than traditional shingles.

Benefits of Installing Impact Resistant Roof Shingles

Class 4 impact resistant shingles have many benefits, including savings from maintenance and repairs, premature roof replacement costs, and a likely discount to your homeowners insurance premium.

  • Versatility – Impact resistant roof shingles are versatile, working well in most neighborhoods, including ones with Homeowners Association (HOA) requirements.
  • Design variety – Impact resistant roof shingles are available in many different designs, from lower-cost 3-tab to architectural to various luxury options. Various shingle manufacturers offer many different colors so you can find something that will work great for your home.
  • Protection from strong storms – Impact resistant shingles offer the best protection for your roof from hail and windstorms. Impact resistant shingles are rated to withstand up to 2” hailstones.
  • Class A fire rating – Most asphalt shingle roof assemblies have a Class A fire resistance rating. There are three levels of fire resistance; Class A is the highest level.
  • Fewer unexpected repair expenses – The added thickness of the shingles will better withstand hailstones and reduce repair expenses. Certain Luxury shingles, such as CertainTeed Grand Manor or Presidential offer even further protection due to their added weight.
  • Extended roof lifespan – Upgrading your roof to Class 4 shingles will extend the life expectancy of your roof compared to standard architectural shingles.
  • Homeowners insurance and premiums discounts – Class 4 shingles deliver substantial discounts to homeowners insurance premiums, averaging 28% discount – and this discount extends for 50-years.
  • Cost effective quality – Class 4 shingles cost more than standard architectural shingles, but the cost to upgrade is less than you may think. The added cost typically averages $50 per 100 square feet. For a 2,000 square foot roof, that’s only $1,000. When considering the discount available on your homeowners insurance premium, these shingles pay for themselves quickly. And with Metro City Roofing, we offer a free upgrade to Class 4 shingles.
  • Easy installation – Impact resistant shingles require no additional or special installation process, compared to standard architectural shingles. Thus, your Class 4 roof installation is easy.
  • Energy-efficiency – Asphalt shingles are not only the most popular roofing material but also are energy efficient. Shingles allow great air circulation in a home, provided the roof has proper ventilation and insulation.
  • Longer manufacture warranty – Class 4 shingles have a 50-year rating and thus are available with longer manufacturer warranties than lower priced 3-tab shingles, with 20- to 25-year life expectancies or even the standard architectural shingles with a 30-year rating.
  • Property value improvement – Your roof can increase the value of your home. A Class 4 roof, along with the insurance discount available, is a major selling point. Further, a new roof will be more attractive to buyers and maximize offers.

A homeowner who wants the best protection for his/her home from storm damage will choose Class 4 impact resistant roof shingles. Homeowners who want the best roofing company in metro Denver will choose Metro City Roofing.

Request free roof inspection

Metro City Roofing offers a FREE UPGRADE to Class 4 impact resistant shingles with every shingle roof replacement.

Metro City Roofing crew replacing the roof of a duplex in Denver, Colorado with five crew members working in orange vests with landscape protection kit in the front of the duplex

Residential roofing experts Roof replacement for a duplex home in Denver


Best Class 4 Impact Resistant Shingles Brands For Your Home

Most asphalt shingle manufacturers make impact resistant shingles that meet the Class 4 rating. Class 4 shingles brands like Owens Corning, Certainteed, and GAF offer Class 4 impact resistant shingles and complete roof systems with beautiful style and quality in various shingle designs. Many of these products have a 50-year rating, compared to 30 years on standard asphalt shingles.

Metro City Roofing is a local, family-owned roofing company that only does business in Colorado. We do not chase storms across the country, setting up temporary operations. We live year-round in the same community as you.

Insurance companies love homes with Class 4 roofs, so much that they give substantial discounts with proof of a Class 4 impact resistant shingle installed. Homeowners save an average 28% on their homeowners insurance premiums.

Which Companies Make Class 4 Shingles?

Owens Corning Class 4 shingles

owens corning logo

Owens Corning is a leading asphalt shingle manufacturer in the United States, with corporate headquarters in Toledo, Ohio – and manufacturing right here in Denver, Colorado. Owens Corning Class 4 shingles are either the Duration Storm or a recent addition called the Duration FLEX. Owens Corning impact resistant shingles are available in seven colors.

GAF Class 4 shingles

gaf logo

There are two GAF Class 4 shingles options – Timberline Armorshield II and the Grand Sequoia. The Armorshield looks like a traditional dimensional shingle but with Class 4 impact resistance. The Grand Sequoia is a more premium wood-shake look with Class 4 impact resistance.

CertainTeed Class 4 shingles

certainteed logo

CertainTeed offers various impact resistant shingles (also known as IR shingles) and beyond, such as slate or metal roofing tiles and shake. CertainTeed Class 4 shingles include Northgate IR, Landmark IR, Belmont IR, and Presidential Shake IR.

Malarkey Class 4 shingles

malarkey roofing logo

The Legacy architectural shingles are Malarkey’s Class 4 shingles, available in 9 colors. Malarkey shingles are viewed as high-quality, more expensive than Owens Corning and GAF, but with strong warranties.

food bank of the rockies logo

Metro City Roofing cares about our local community.

We will donate $100 to Food Bank of the Rockies in your name following your completed roof replacement to give back to our local community.


Impact Resistant Roof Shingles Warranty & Lifespan

There is no such thing as a hail resistant roof, but Class 4 impact resistant roof shingles are the most advanced asphalt roofing shingles available. Class 4 shingles have a 50-year life expectancy, far superior to the standard architectural shingles 30-year life expectancy.

In the Denver metro and across the Colorado Front Range, extreme wind and hail can accelerate the lifespan, requiring homeowners to replace their roofs far sooner.

That’s why, at Metro City Roofing, we recommend Class 4 shingles for all our customers, and offer a FREE UPGRADE to Class 4 impact resistant shingles with every roof replacement. For insurance claims, we have a 99% success rate to get your storm claim approved.

Class 4 shingles are tested to withstand up to 2 inch hailstones. Here in Colorado, we can get extreme storms with large hailstones. In May 2017, the Denver metro area had nearly 4 inch hail. Imagine having replaced your roof in 2016, only having to do it again in 2017.

Close-up of premium asphalt shingle sample in gray color

Class 4 shingles are worth the investment Add protection for your home and save money on your insurance premium


How Much Does a Class 4 Shingle Roofing Cost?

Class 4 shingles cost more, but deliver a strong return on investment, providing increased hail damage resistance and reduced maintenance costs. Each 100 square feet of upgraded Class 4 shingles cost less than $50. Thus, a 2,000 square foot roof will cost only $1,000 incremental cost. A 3,000 square foot roof will cost an additional $1,500, compared to standard 30-year architectural shingles.

At Metro City Roofing, we offer a FREE UPGRADE to Class 4 shingle roofing for every roof replacement. You’re saving money already by choosing the professionals at Metro City Roofing. Homeowners may eliminate a costly roof replacement with a future hailstorm too. A Class 4 impact resistant roof is also an important feature when selling a home. Contact Metro City Roofing to learn more ways a Class 4 roof is the right choice for you.


Class 4 impact resistant shingles insurance discount

Helping to offset the expense of a roof replacement with premium Class 4 shingles, many insurance companies like Allstate and USAA offer a Class 4 impact resistant shingles insurance discount.

Homeowners can receive a 28% Class 4 shingles insurance discount on their homeowners insurance policy. That’s $863 annual average savings, which you will earn each year for 50 years!

Metro City Roofing offers our customers a FREE UPGRADE to Class 4 shingles. We have a 99% SUCCESS RATE to get your insurance claim approved. Contact us today.

Metro City Roofing is the only call you need to make for Colorado homeowners in need of a high-quality roofing contractor.

Aerial view of tree-lined neighborhood in Denver, Colorado

Class 4 shingle roof Accommodates solar panels on top of the shingles

The professionals at Metro City Roofing take pride in continual training and ensuring we are aware of changes to local code requirements. Contact us today to schedule your FREE ROOF INSPECTION with a roofing company that stands out from the rest.

Colorado Local Code Requirements

Colorado cities and counties are shifting to add Class 4 shingles when replacing a roof to their local code requirements. This is happening far beyond Colorado, in states like Florida and Texas, which also receive extreme weather.

Beyond shingle requirements, local code requirements continue to advance with drip edge required at eaves and rakes and an ice barrier (often called Ice and Water Shield) required in some Colorado cities and counties.

Drip edge plays an important role at all roof edges by directing water into the gutters and away from your fascia. An ice barrier helps to reduce ice damming, a natural phenomenon where ice builds at the edge of a roof and prevents melting snow from draining into the gutters. Water buildup behind the ice dam can leak inside a home.

For example, effective January 2019, the City of Fort Collins now requires asphalt shingles must be Class 4 impact resistant that meet the UL 2218 test. In Aurora and Jefferson County, an ice barrier is required for all re-roofing from the lowest edges of all roof surfaces up a minimum 24 inches inside the exterior wall. Depending on the roof’s pitch and soffit measurement, your roof may need one or two rolls of ice and water barrier along all eaves.

Where required by local code, building inspectors will look that these code items have been installed as a requirement to pass a final roof inspection. Some cities and counties require a mid-roof inspection, where only a defined percentage of roof may be shingled prior to approval to complete the entire roof replacement.

Check our Locations page to learn more about your specific Colorado city or county

Metro City Roofing is your one-stop-shop for a complete and professional roofing solution.


Same installation process. Very different results.

Installing a Class 4 impact resistant shingle is the same as a standard architectural or 3-tab asphalt shingle. According to the International Building Code (IBC), asphalt shingles must be fastened to solidly sheathed decks. Asphalt shingles can only be installed on roof slopes of 17% or greater (2 units vertical in 12 units horizontal). Fasteners for asphalt shingles can be galvanized, stainless steel, aluminum, or copper with no less than four fasteners per strip shingle. There may be a need for additional fasteners to comply with the manufacturer’s requirements for high wind areas.

Beyond only impact resistant shingles, we recommend installing the matching impact resistant ridge cap. As part of the Metro City Roofing difference, we install both impact resistant shingles and ridge cap for all roof replacements within our superior installation process.

Choose the Right Roofing Shingles after Hailstorm

If your home has damage following a hailstorm, you may experience added stress to survey the extent of damage and what to do next. Documenting all damage is critical as is making all necessary immediate repairs to further protect your home. You should also speak with your insurance company to make them aware of potential need to file a claim.

If your roof has damage, it is important to choose the right roofing shingles. Class 4 shingles offer the best protection against future hail storms but cost more than standard architectural Class 3 shingles.

Metro City Roofing field represenative using chalk to indicate hail damage on an asphalt shingle roof

Metro City Roofing field represenative using chalk to indicate hail damage on an asphalt shingle roof

Trusted By Major Insurance Companies

Click Any Insurance Company Icon to Read More

American Family Insurance
Liberty Mutual
State Farm

For our roofing customers, we will handle additional trades for your home, including gutters, insulation, painting, windows, skylights, solar, and more.


Answers to Common Questions Asked by Our Customers

There’s no such thing as a hail resistant roof, but impact resistant shingles are well worth the cost.

At Metro City Roofing, we tell our customers that there is no such thing as a hail proof roof, but there are many options for impact resistant shingles. We share that impact resistant shingles will withstand most of the hailstorms in Colorado, but not a monster hailstorm as we experienced in May 2017. On May 8, 2017, a severe hailstorm delivered 3 inches or larger sized hailstones across the Denver metro area.

Many roofs with Class 4 impact resistant shingles still had hail damage to their roofs, but they withstood the extreme damage much better than lesser quality shingle roofs.

Asphalt shingles with a Class 4 rating are manufactured according to Underwriter Laboratories UL2218 rating. There is a clear marking on the wrapper of each bundle of shingles. Homeowners who install Class 4 roof shingles often seek a discount on their homeowners insurance policy. A completed and signed form is required to enable the discount, clearly indicating the manufacturer and shingle type.

While Class 4 shingles do cost more than Class 3 shingles, there are multiple benefits, including enhanced durability to withstand future hailstorms and a substantial insurance discount on a homeowners insurance premium. Class 4 shingles can also be a great selling point when selling your home, as the discount is aligned with the roof.

UL 2218 is the impact test standard to test an asphalt shingle’s ability to withstand hail damage. It is often referred to as the steel ball test since various sized steel balls are dropped from a height needed to achieve the same impact as a hailstone in a thunderstorm.

There are 4 ratings, with Class 4 as the best. Class 1 projectile is 1.25 inch in diameter, Class 2 is 1.50 inches, Class 3 is 1.75 inches, and Class 4 is 2.00 inches. A shingle with a Class 4 rating is tested to withstand a slightly larger hailstone without impact than it’s Class 3 counterpart.

Homeowners who live in hail-prone cities and states might consider Class 4 impact resistant shingles for their home. These premium shingles are designed to better withstand hail damage. Depending on where you live, Class 4 shingles might be required by local code when completing a roof replacement or new roof installation.

Aerial photo of several Victorian-style homes on a street across from a park in Denver, Colorado


Best Metro Denver Roofers For Your Roof

Metro City Roofing is the best roofing company in the metro Denver area. We are licensed and insured, with a focus on training and best-in-class credentials. Our team is licensed adjusters, who earn the same credentials as insurance adjusters. We set fixed appointment times, so you don’t stay home for several hours waiting around.

We specialize in roof replacements due to hailstorm damage and are the #1 roofing company recommended by local insurance agents in Denver metro and across the Front Range. When you’re looking for the best “roofers near me”, look no further than Metro City Roofing.

Read more About Us
Metro City Roofing management team with green pine tree in the background

20+ years professional experience Senior and knowledgeable staff to best serve our customers

Overall rating
65 reviews
Read more reviews

We respect your time.

We schedule specific appointment times and don’t expect you to wait at home for us during long appointment windows.

Our Suppliers

As a top roofing company in Colorado, we install only high-end asphalt shingle roofing brands, such as Owens Corning, CertainTeed, and GAF. We frequently recommend Owens Corning since they manufacture locally in Denver, CO.

We proudly install Owens Corning roofing materials for a new shingle roof, including shingles, ridge vent, underlayment, starter, and more. Owens Corning is a United States Fortune 500 company. Metro City Roofing is a Preferred Contractor and has earned numerous Owens Corning certifications, including Total Protection Roofing System and Top of the House certification. We have been specially trained on how roofing, ventilation, and attic insulation work together to improve your home’s energy efficiency and comfort.

owens corning
carlisle syntec systems
johns manville

Our Associations

Metro City Roofing is a proud member of the National Roofing Contractors Association (NRCA), the Colorado Roofing Association (CRA), and is nationally certified with the International Code Council (ICC). We are also involved in numerous local Chambers of Commerce, including Denver, Fort Collins, Colorado Springs, Broomfield, Westminster, Arvada, Golden, and more.

Best-In-Class Training and Certifications

owens corning
Owens Corning Top of the House certified logo with Pink Panther character leaning against a black house with red roof and Owens Corning logo inside the house

Our Installers

Our skilled and experienced roof installers will ensure to install your roofing system properly with high-quality craftsmanship. Our new roof installation crew has many years of experience with complete roof replacements and roofing repairs. We will address any issues that come up, such as fixing a leak, replacing a missing or broken tile or shingle, or a new roof replacement, while delivering quality workmanship.

Our entire team live year-round in Colorado. We are your neighbors.

Our Reputation

We are proud of the excellent reputation we’ve earned, with outstanding customer satisfaction, one roof, and one customer at a time.

We are also proud to have earned the Google Guaranteed badge. This means Metro City Roofing passed a Google screening and qualification process, including verifying our business licenses and insurance coverages, background checks, and favorable customer reviews. Ultimately, the Google Guaranteed badge gives customers the confidence they are working with a legitimate, reputable company in their area.

Please read more of our reviews on our Reviews page.

google guaranteed bannerBest Denver RoofersBuildzoom Top 10

Are you looking for the best metro Denver roofing company?

Metro City Roofing is the #1 roofing contractor recommended by local insurance agents across the Front Range.