How Long Does an Asphalt Shingle Roof Last in New Jersey?
An average asphalt shingle roof in New Jersey is expected to last anywhere from 20 to 30 years. The typical 3-tab shingles usually make up for the lower end of the scale while the architectural shingles, which have become the preferred type of NJ roofs in recent times, can survive 25 to 30 years or even more if properly maintained.
The real life span of the asphalt shingle roof depends very much on the quality of its installation, attic ventilation, and its ability to withstand all kinds of weather – from hot humid summers to frosty winters. Being roof contractors working on all sorts of Essex County houses, we get asked about the life span of the asphalt roof very often. That is why we have created this guide where you can find out about the real lifespan of your asphalt roof and what determines it.
Average Asphalt Shingle Roof Lifespan in New Jersey
The majority of asphalt shingles in New Jersey can typically withstand between 20 to 30 years but this is only a general rule since there can be variations even between two roofs constructed at the same time because of factors such as the grade of the shingle being used, the installation process, attic ventilation, and exposure to the elements.
This range is only supposed to help people plan for the future since it does not mean that once the roof reaches the 20 to 30-year mark, it will definitely need replacement.
Lifespan Comparison of Common Asphalt Shingle Types
Not all asphalt shingles are built the same. Here’s how the most common types compare:
|
Shingle Type |
Typical Lifespan |
Notes |
|
3-Tab Shingles |
15–20 years |
Budget-friendly and lightweight, but generally less wind- and impact-resistant than architectural shingles. |
|
Architectural (Dimensional) Shingles |
25–30 years |
The most common choice on New Jersey homes today; thicker, layered construction improves durability. |
|
Premium / Designer Shingles |
30+ years |
Heavier, higher-grade shingles built to mimic slate or cedar shake; lifespan varies by manufacturer. |
These numbers are indicative of what can be expected from the average roof, assuming it was correctly installed and reasonably well-maintained. The roof that doesn’t fall into these ranges usually has some other problem associated with it, like improper ventilation or installing shortcut, and isn’t the result of “bad luck.”
3-Tab Shingles
3-tab shingles are flat, single-layer, uniform in appearance shingles. These are a cheaper product that is going to have shorter lifespan and lower wind resistance than architectural shingles.
Architectural (Dimensional) Shingles
The dimensional (architectural) shingles are laminated to provide additional thickness and strength as well as aesthetic value. They became the norm for residential roofing in New Jersey. In addition to their aesthetic superiority, most manufacturers warrant them for longer period than 3-tab shingles. To learn more about differences between two products, take a look at our comparison of
architectural vs. 3-tab shingles.
Premium or Designer Shingles
Premium shingles aim to recreate the look of cedar shakes or slates while maintaining the lightweightness and affordability of asphalt shingles. Premium shingles are typically warranted for the longest periods out of all three types of shingles, yet the longevity of their performance will depend on proper installation and conditions.
Factors That Shorten or Extend Roof Life
Though the shingle type dictates a starting point, there are many other things that will determine whether the roof gets at the top end or bottom end of the potential range.
Installation Quality
The wrong nail placement, improper flashing installation on chimneys and valleys, or lack of underlay can shorten the roof life for decades irrespective of how good shingles it was built of. It is one of the most significant variables for the homeowner who is free to pick an experienced installer.
Attic Ventilation
Bad attic ventilation leaves heat and moisture trapped under the roof decking that accelerates aging of shingles from underneath. Proper intake and exhaust ventilation ensures temperature and moisture regulation throughout the year.
Sun Exposure and UV Damage
Prolonged exposure to UV radiation slowly degrades asphalt and granules on the surface of the shingles. Roofing surfaces that face south and get more sun exposure show aging faster than those with less sun exposure on north slopes.
Rain, Snow, and Ice
The process of freezing and thawing, the presence of water puddles, and formation of ice dams underneath shingles adds stresses to the whole roofing system. The factor is rather important for New Jersey roofs because of the cold winters and humid summer months of the state.
Wind
The strong wind blows shingles, loosens sealants, or lifts shingle edges that do not have any sealant strips because of improper installation. Properties located in coastal areas and in higher elevations of NJ are more prone to such conditions.
Temperature Changes
Asphalt shingles are flexible, and they expand and shrink depending on the temperature. The change from hot and humid summer months to cold winter puts the shingles through many expansion-shrink cycles.
New Jersey Weather Considerations for Asphalt Roofs
The New Jersey weather system will be tough on the roof with humid and sunny summers, chilly winter months with the occasional presence of ice and snow, and coastal storms or nor’easters, which will cause strong wind and rains. The formation of ice dams on the eaves is a typical winter problem that may push water up under the shingles if there is no proper insulation and ventilation of the roof. It is always good to check the roof after a big storm for possible storm damage even if everything seems to be fine.
This is exactly why there are lifespans presented as a range because the roof on a ventilated house in a calm place will live longer than an identical one in another town.
Signs an Asphalt Roof May Need Repair or Replacement
Age is only one factor. Some of the other warning signs include:
- Shingles that are cupped, curled or buckled.
- Missing, broken, or damaged shingles.
- Granules that have fallen off in gutters/downspouts.
- Light coming through attic roof boards during daylight hours.
- Bows on the roof deck.
- Moss or algae growing in large patches.
- Signs of water damage in the form of staining or leaks in the attic and on the ceilings.
- The roof is at or near the end of its normal lifespan.
If there are only a few isolated problems, they may be resolved by getting a roof repair done, whereas problems that are widespread on the roof or if the roof is near the end of its lifespan, then it would mean that a roof replacement would be required.
Maintenance Tips to Extend the Life of Your Asphalt Roof
Schedule a yearly inspection, and always one following a big storm
- Make sure your gutters are clean so water will drain properly, not back up underneath your roofline
- Trim branches overhang your roof and could scratch shingles or throw debris onto your roof
- Check the attic ventilation and insulation regularly because airflow problems can prematurely age your shingles from inside out
- Take care of minor repair problems like a popped-up shingle, damaged seals, a minor leak right away
- Clean any moss or excessive debris on the roof before it becomes a moisture problem that ages your shingles
While regular maintenance will not prevent your roof from aging, it will always help you ensure that you get full life out of your roof instead of losing many years due to avoidable damage.
A basic seasonal system works well for NJ roofs: inspect the attic and gutters in fall, and a visual check in the spring when the worst weather is over. Finding a small problem out-of-season is almost always less troublesome than fixing it during the storm.
Cost and Value Considerations
The cost to replace asphalt roofing will depend upon the size and slope of the roof, the quality of the shingles, whether a tear-off or overlay is feasible, the accessibility of the roof, and the permitting in your area. Instead of using a general range of costs, the best way to get an estimate is an on-site estimate specific to your house.
While cost is one measure of value, a good-quality architectural shingle roof installed correctly will hold up well over time, need fewer repairs, and provide better curb appeal than a less-expensive install – even if the initial cost is more.
If you’re trying to decide about the timing of your project, keep in mind that while a tear-off (complete removal of the old shingles to expose the roof deck and flashing) is more expensive initially, it also means you can have the entire roof deck inspected. And, financing is also an option for those who want to proceed with their roofing replacement but don’t want to pay the total upfront.
Expert Tips From the Field
- Age should not be the sole criteria in judging a roof’s performance, since an old roof, maintained well, will outlast a new one that is neglected
- Inspect the attic, not just the roof covering, since problems related to ventilation and water are usually identified in the attic area
- Do not ignore even one missing or damaged shingle, since it exposes all the layers below the shingles to the elements
- Have your roof inspected professionally at least once a year before the stormy weather starts
- Always ask for a detailed scope of work in writing before repairs or roof replacement commence
Choosing a Qualified Roofing Contractor in New Jersey
-
The roofing company you hire will affect the longevity of your roof as much as the type of shingles used. Some important qualities to check for when considering a roofing company in NJ include:
- License in the state and full insurance coverage
- Manufacturer certification, like Master Elite designation from GAF, indicating more training and warranty protection
- Experience in the NJ area with local climate conditions, permits and regulations
- A detailed written estimate of materials used, project scope and schedule
- Detailed warranty information regarding both materials and installation
R&G Roofing, Carpentry & Siding is a licensed and insured NJ roofing company with 25+ years’ experience serving the Essex County NJ area. For more information on how to choose a roofing company, see our tips on questions to ask before hiring a roofing contractor.
Final Thoughts: How Long Will Your Roof Really Last?
A typical homeowner in New Jersey will have a roof that will last between 20 to 30 years depending on whether the asphalt shingles are architectural or 3-tab shingles. However, weather conditions, ventilation, and installation play an important part in this equation, rather than the number of years alone.
If your roof is close to its life expectancy, has some warning signs or you just need an unbiased evaluation of its condition, then R&G Roofing, Carpentry & Siding can help. Contact us today or give us a call at (973) 324-9461.
How long do asphalt shingle roofs last in New Jersey?
Asphalt shingle roofs last around 20 to 30 years in New Jersey, depending on the quality of the shingles, proper installation, attic ventilation and the maintenance performed throughout the life of the roof.
How much longer do architectural shingles last than 3-tab shingles?
3-tab shingles are designed to last about 15 to 20 years, whereas architectural shingles last about 25 to 30 years because of their layered, thicker construction.
How much difference do roof colors make to lifespan?
The darker the roof is, the more heat the surface absorbs, which can slightly decrease the lifespan of the roof in areas where there is excessive sun. However, proper ventilation makes much more of a difference than just the color of the roof.
How much does proper attic ventilation help roof longevity?
Ventilation of the attic area controls both the moisture and the temperature within the attic and under the roof, which allows you to reduce the amount of premature aging of the roof and the risk of curling.
How often should an asphalt roof be inspected?
One professional inspection per year and one more after each storm are sufficient to prevent small problems with the roof from turning into big and expensive repairs.
What are the signs of an asphalt roof that needs to be replaced?
The first signs of an old and worn out asphalt roof include curled or cupped shingles, granules in the gutters, water stains or leaks on the roof, as well as the advanced age of the roof that approaches the expected maximum service life.
How does the weather in New Jersey influence the lifespan of a roof?
High humidity during hot summers, freezing and thawing of the surface during winter, and possible wind storms mean that the lifespan of the roof in New Jersey is shorter than that of the roof in milder climates.
When should the roof be repaired and when replaced?
Isolated problems on an otherwise good roof can usually be fixed, whereas overall aging of the roof or approaching the end of the lifespan will most likely cost less if you simply replace it.
