Every spring in Aurora, you can almost feel it coming, dark clouds, pinging hail, and that sinking feeling that your roof might not make it through another storm. Maybe you have already patched a few leaks, or you are watching the neighbors get new roofs after the last big hailstorm. You know the next round of weather is not a matter of if, but when.
At the same time, you are hearing the same phrase from adjusters, mailers, and maybe even your neighbors, “Class 4 impact resistant shingles.” You are told they are tougher and could save you money, but no one really explains how, or whether they are actually worth the higher price on a home in Aurora. You are trying to decide if this is a smart upgrade or just another upsell tied to storm season.
At Awalt Construction, we have been roofing along the Front Range since 2010, including Aurora, Northglenn, and surrounding communities that see hail year after year. We install impact resistant systems from manufacturers like GAF, CertainTeed, Owens Corning, and Tamko, and we help homeowners compare Class 4 and standard shingles during real hail claims, not just on paper. In this guide, we will share what we have learned so you can decide if Class 4 impact resistant shingles make sense for your roof, budget, and long term plans.
What Class 4 Impact Resistant Shingles Really Mean
Class 4 is a specific impact rating, not just a marketing phrase. Asphalt shingles are tested under a standard called UL 2218, which evaluates how well roofing materials handle impacts without cracking or breaking. The test uses steel balls dropped from set heights onto installed shingle samples to simulate hail hitting your roof. Those shingles are then checked for splits, fractures, or other structural damage.
The rating scale runs from Class 1 up through Class 4. Class 4 is the highest rating under UL 2218, meaning the shingle withstood the test impacts without showing the kind of cracks or punctures that could shorten its life or lead to leaks. When you see “Class 4 impact resistant” on a shingle, it means that product passed the most demanding level of this impact test. It does not mean the shingle is indestructible or that it will never be damaged in a storm.
In practical terms, Class 4 shingles are designed to better absorb and disperse the energy of hailstones so the backing and asphalt do not split as easily. Different manufacturers achieve this in different ways, such as reinforced mats, modified asphalt formulas, or increased shingle thickness. Because Awalt Construction is a preferred installer for brands like CertainTeed, Owens Corning, GAF, and a Tamko Pro Diamond contractor, we work with multiple Class 4 systems and understand how each behaves on actual roofs in Colorado, not just in the lab.
One key point to keep in mind is the difference between functional damage and cosmetic damage. UL 2218 focuses on functional performance, meaning whether the shingle can still do its job. A Class 4 shingle can still show minor surface marks or granule scuffing from hail without failing the test. That same concept carries over to your roof; you may see evidence that hail hit the shingles without it automatically meaning the roof has lost its ability to protect your home.
How Aurora Hail Actually Damages Your Roof
The UL 2218 tests are designed to simulate hail, but the storms that roll through Aurora and the greater Denver metro area add their own twist. Homes here can see storms that bring one inch or larger hail multiple times in a season, and occasionally much larger stones. Strong winds often push that hail sideways, so it hits slopes, ridges, and vulnerable areas with more force than straight down impacts.
On a typical architectural asphalt shingle, hail does not always leave an obvious hole. The most common pattern we see on roofs in this area is a combination of granule loss and bruising. A hailstone strikes, dislodges the protective granules, and presses into the asphalt layer. Even if the top surface looks mostly intact, the impact can crack the asphalt mat or the fiberglass reinforcement underneath. Over time, those bruised spots can become weak points where water works in, the shingle ages faster, or a future storm finishes the job.
Repeated smaller hailstorms can add up too. A roof might survive one moderate event without a clear claim, but after two or three years of similar storms, the accumulated impacts leave the shingle more brittle and worn. That is when minor leaks begin to show up in ceilings or around penetrations, or a bigger storm finally pushes the roof past the point of repair. The damage is not always obvious from the yard, which is why thorough inspections after hail are so important.
In our inspections across Aurora and neighboring cities, we often see a different pattern on roofs with quality Class 4 shingles. In small to moderate hail, there is usually less deep bruising and fewer fractures in the shingle mats. Some granules may still be scuffed, but the underlying structure tends to hold up better. That can mean fewer leaks, a lower chance of needing a full replacement after a moderate storm, and more ability to ride out several years of “normal” Front Range hail before a major event forces another roof project.
Class 4 vs. Standard Shingles: What Changes and What Stays the Same
Most modern roofs in Aurora use laminated architectural shingles, sometimes called dimensional shingles. These have a fiberglass mat, asphalt coating, and granules. Class 4 shingles usually start with a similar basic structure, but manufacturers reinforce them so they can flex and absorb impacts more effectively. Some products use thicker mats, others use polymer modified asphalt, and some use additional reinforcement layers to improve toughness.
On the roof, these design changes tend to show up in how the shingles perform during hail and over time. In small to mid size hail events, Class 4 products often show fewer cracked corners and fewer deep bruises that go all the way through the mat. They are also less likely to lose large patches of granules in a single storm, which helps protect the asphalt from UV damage. This is where the UL 2218 rating becomes meaningful; the shingle is built to handle those impacts without immediate structural failure.
At the same time, there are important limits. No impact resistant shingle is immune to very large hail or extreme wind driven debris. When a neighborhood sees golf ball sized or larger hail, even Class 4 systems can sustain functional damage, especially at ridges, hips, and roof edges where forces are concentrated. Class 4 also does not change how well your roof handles other issues, such as poor attic ventilation, excessive heat, or manufacturing defects unrelated to impact resistance.
Installation quality does not change just because a shingle is Class 4. Proper nailing patterns, correct underlayment, clean deck surfaces, and correct flashing details are just as critical on an impact resistant roof as on any other. As a CertainTeed ShingleMaster roofing contractor, an Owens Corning preferred contractor, and a Tamko Pro Diamond contractor, Awalt Construction follows manufacturer installation guidelines so that the products you choose can actually perform to their rating. A Class 4 shingle installed poorly will not deliver the storm resilience you are paying for.
What Class 4 Shingles Cost in Aurora Compared to Standard Roofs
The most common hesitation we hear about Class 4 shingles is straightforward, “How much more will this really cost me?” Impact resistant shingles almost always come at a premium compared to standard architectural products. The extra cost comes from both the more robust materials and, in some cases, slightly different handling requirements during installation.
On a typical Aurora home, the material cost for Class 4 shingles will often run higher than comparable non impact resistant lines. The exact difference depends on the brand and product, but homeowners commonly see that Class 4 adds a noticeable, though not extreme, percentage to the shingle and accessory portion of the job. Labor can also be slightly higher on some systems, though not always. The total project difference usually shows up as an increase on the overall roof replacement price, not a doubling or tripling of cost.
To put this into perspective, most roof replacements involve many fixed costs, such as tear off, disposal, underlayment, flashings, and vents. Upgrading to Class 4 primarily changes the shingle component. That means the percentage increase on the entire project is often smaller than the increase on the shingles alone. For many Aurora homeowners, the real question becomes whether that added investment makes sense over the time they plan to own the home.
At Awalt Construction, we provide free estimates that show side by side pricing for standard and Class 4 options whenever homeowners are considering an upgrade. This lets you see the actual price difference on your roof instead of guessing from broad averages. We also offer friendly financing options, which can make it easier to choose the impact resistant upgrade without stretching your budget too far in a single season.
How Class 4 Shingles Affect Insurance in Colorado
Many insurers in Colorado offer some level of premium discount for homes with UL 2218 Class 4 impact resistant roofs. The idea is simple, if your roof is less likely to suffer functional damage in moderate hail, you are less likely to file certain types of claims. However, the way this plays out in real life varies from one carrier and policy to another, and it can change over time as companies adjust their approach in hail prone regions.
Insurers that recognize Class 4 shingles usually expect documentation that the roof was installed with approved impact resistant products. That can include invoices, product labels, or letters from your roofing contractor stating the specific shingle and its UL 2218 rating. When we install Class 4 systems, we can help provide the documentation you need to submit to your insurer so they can evaluate any available discount.
There is an important detail many homeowners do not learn about until after they have upgraded. Some insurance companies pair Class 4 discounts with cosmetic damage exclusions. This means they may agree to reduce your premium, but in exchange, they will only cover functional damage that affects the roof’s ability to shed water, not purely cosmetic marks from hail. If your shingles show visible dents or scuffs but do not leak or fail functionally, that cosmetic damage might not be covered. This can be surprising if you are expecting a new roof every time hail leaves visible marks.
A Class 4 roof can still be a smart choice even with these policy nuances, but it is important to walk in with clear expectations. Impact resistant shingles can reduce the likelihood of serious damage in small to mid size storms and may reduce how often you need major repairs or replacements. They do not eliminate the risk of damage in a major Aurora hailstorm, and they do not guarantee lower premiums in every case. When we work with homeowners in the Denver metro, we encourage you to talk with your agent about current Class 4 discounts and any policy changes before you finalize your roofing decision.
When Class 4 Impact Resistant Shingles Are Worth It in Aurora
Whether Class 4 shingles are “worth it” depends on your home, your long term plans, and your risk tolerance. One common scenario where the upgrade makes strong sense is when a homeowner is already replacing a hail damaged roof under an insurance claim and plans to stay in the house for many years. In that case, the insurer typically covers most of the base replacement cost, and you are primarily deciding whether to invest extra in Class 4 for future storms. The added cost is often easier to justify when it is attached to a covered replacement rather than a fully out of pocket project.
Another situation where Class 4 can be smart is on higher value homes or properties with sensitive interior finishes. If you have extensive drywall work, custom ceilings, or valuable contents that would be expensive to repair in the event of a leak, reducing the chance of roof failure in moderate storms can protect more than just shingles. The same logic can apply to multi building properties or small commercial structures in Aurora that face frequent hail exposure and disruption costs when roofs are damaged.
There are also situations where the answer is less clear. If you expect to sell your home in a few years, you may not fully realize the long term benefits of the upgrade. Some buyers will see Class 4 as a selling point, but not all are aware of its value, and appraisals do not always fully reflect the investment. Likewise, if your roof is relatively small and simple, the cost of a future standard roof replacement might not be high enough to justify the added cost of impact resistant materials today.
Along the way, we make a point of addressing a couple of common assumptions. A Class 4 roof does not mean you will never file another hail claim or that you will never need another replacement. Big storms can still do real damage. Similarly, while some homeowners do see meaningful premium reductions, it is not safe to assume that insurance savings alone will always pay back the entire upgrade. At Awalt Construction, our goal during inspections and estimates is to walk you through these tradeoffs clearly so you can make a decision that fits your plans, not just pick the most expensive option.
Why Installation and Roof System Design Matter as Much as Class 4 Rating
A Class 4 shingle is only part of a durable roofing system. Proper installation and overall roof design play a major role in how well your roof performs during Aurora hailstorms and severe weather.
Key Factors That Affect Roof Performance
- Proper shingle installation and fastening
- Solid roof decking and structural support
- Quality flashing and underlayment
- Correct attic ventilation
- Properly functioning gutters and drainage
Even high-quality shingles can fail early if they are installed incorrectly or paired with poor ventilation and drainage. Excess heat and moisture in the attic can shorten roof life and weaken the roofing system over time.
Your roof also works together with siding, gutters, windows, and other exterior components. When these systems are functioning properly together, your home is better protected against water intrusion and storm damage.
When installing Class 4 roofing systems in Aurora, we focus on the entire exterior system, not just the shingles, to help improve long-term durability and storm resistance.
Talk Through Your Class 4 Options With a Local Aurora Roofing Team
Class 4 impact resistant shingles can be a smart investment in Aurora, especially for long term owners in hail heavy neighborhoods and for roofs already being replaced after a storm. They are not a magic shield, and they are not the right answer for every budget or every situation, but when you understand how they work, how much they cost on your roof, and how your insurer treats them, you can make a choice that fits your home instead of guessing.
If you are weighing a roof replacement or dealing with a recent hail claim, Awalt Construction can inspect your roof, explain what we see in clear terms, and lay out side by side estimates for standard and Class 4 systems. We can also help you gather the documentation your insurer may need and coordinate any exterior work, from gutters to siding, so the whole project moves smoothly. For many Aurora homeowners, that kind of clarity and coordination is just as valuable as the shingles themselves.
Call (303) 647-4006 to schedule your free roof inspection and Class 4 shingle consultation.