High winds pose serious threats to properties across many parts of the country, and roofs take a major portion of the hit when a big wind storm blows through. For homeowners living in high-wind areas or near the coast, where blustery winds whip off the water, a roof strengthened for these challenging conditions is essential. This article will help readers better understand how asphalt roofing companies secure shingles to prevent them from lifting in the wind, delivering a durable roof that provides long-term protection. To fully appreciate the cost of not having a roof that withstands wind, let’s look at the alarming statistics on high winds and roof damage.
The Cost of High Wind Damage
Although Northern Michigan experiences only moderate winds for half the year, occasional gusty storms can damage roofs, especially older or poorly built ones. A frequent cause of significant storm damage, high winds account for a major portion of homeowner’s insurance claims every year on the national level. With the average insurance claim exceeding $13,000, roof repair and replacement costs have surpassed $30 billion every year (nationwide)! These numbers aren’t just data points; they are real cash losses that could have been avoided with proper installation and special techniques for regions prone to strong winds. To truly appreciate the techniques an asphalt roofing company will apply to achieve a solid roof in gusty regions, we must first understand what it really means to be wind-resistant.
Understanding Wind Resistance in Asphalt Shingles
Shingles today are better engineered for performance than those of the past. Using established standards and testing methods, shingles are classified into different performance classes. For the best wind resistance, some class H shingles are rated for up to 150 mph. When choosing shingles for the best wind protection, look for those specifically rated for high-wind regions. Characteristics such as greater weight and better interlocking designs make wind-resistant asphalt shingles superior to standard three-tab shingles. An experienced Traverse City asphalt roofing company will help match the right product to each home’s specific wind exposure and then employ special techniques to deliver a wind-resistant asphalt roof.
7 Ways Professional Roofers Build Wind-Resistant Asphalt Roofs
Asphalt shingles are the most common roofing system in the U.S. They consist of fiberglass or organic materials coated with asphalt and protective granules, making them durable yet affordable. However, asphalt shingles are particularly vulnerable to high winds when installed incorrectly. Professional asphalt roofing companies employ several proven techniques to increase wind resistance in vulnerable areas. Going beyond basic nailing, professional roofers will focus on creating a solid, sealed system that resists uplifting by:
Hand-Sealing Every Shingle: To create a stronger bond than the traditional self-sealing strips commonly used on asphalt shingles, professional roofing crews hand-seal every shingle. By using roofing cement or a manufacturer-approved adhesive, shingles are sealed to the underlayment, preventing wind from getting underneath the tabs and lifting them
6 Nail Fastening Patterns: Asphalt shingles are nailed to the surface, typically using a four-nail pattern, which is the standard. In high-wind areas, crews often use a six-nail pattern, placed just below the sealing strip, and according to the manufacturer’s designated nailing zones. This additional six-nail reinforcement greatly reduces the chances of shingles lifting or tearing off during a windstorm.
Use of Ring-Shank or Deformed-Shank Nails: Traditionally, asphalt roofing nails have a straight, smooth shank and a smooth head. Ring-shank and deformed-shank nails have textured ridges or grooves along the shaft with larger heads. These textured nails grip the roof sheathing more tightly, making them harder to pull out or lift during strong winds.
Sealing the Roof Deck: One of the most effective ways to protect a new roof (and everything under it) is a sealed roof deck. To seal a roof deck, roofers will install a self-adhering ice and water shield along the roof’s eaves, rakes, valleys, and around any penetrations, such as chimneys. Sealing can also be achieved by applying high-performance tape to all deck seams.
Enhanced Underlayment: Traditionally, roofers apply only one layer of standard underlayment. To windproof asphalt shingles, roofers use a strong secondary waterproof barrier to prevent wind-driven rain from entering the home in case high winds lift shingles.
Reinforced Metal Drip Edges: Installing the right metal flashing is a crucial step in installing a new asphalt roof. This simple but important upgrade will significantly strengthen the most vulnerable parts of a roof during a high-wind event. Placement of reinforced drip edges along the eaves and rake edges provides an asphalt roof with a strong, wind-resistant barrier, preventing wind from getting under the shingles.
Reinforced Ridge Caps: Ridge caps play an important role in a roof’s wind resistance. Instead of using the standard cut shingles bent over the ridge, professional roofing companies often install specially designed reinforced ridge caps that are thicker and heavier, typically fastened with 6 nails. Ridge caps are especially important because this is where the wind pressure is usually the greatest.
By combining high-wind-rated shingles with specialized techniques, professional roofers can build asphalt roofs that withstand the strongest Northern Michigan winds. Beyond materials and techniques, several other factors should be considered when planning a roof replacement in areas with high winds. Let’s take a look.
Beyond Material and Technique: What Else Homeowners Need to Consider
Planning a new roof replacement is a big investment for homeowners. From choosing an asphalt roofing company to selecting the right materials, homeowners can play an active role in planning the details that ultimately affect performance and longevity. When living in a region with high winds, additional considerations are needed. Ask potential contractors about their experience with high-wind installations and the materials and techniques they recommend for the best wind protection. Request wind ratings for shingles and details on manufacturer warranties, which demonstrate the company’s confidence in its products.
Preparing Your Asphalt Roof for Wind
When it’s time for a roof replacement, investing in high-wind-rated materials and finding a professional who uses specialized techniques for strong winds can significantly reduce the risk of wind damage. By hand-sealing each shingle, modifying nailing patterns with specialized nails, and enhancing the underlayment, a professional asphalt roofing company can build an asphalt roof that not only withstands strong winds but also reduces the potential for an insurance claim. Working with an experienced, local professional who understands local wind conditions is one of the best decisions a homeowner can make. With the right team, homeowners can choose the best combination of shingles, underlayment, and installation techniques to ensure their roof protects their home for decades.