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Asphalt shingles can perform in high winds, but the result depends on the shingle’s tested classification, the roof assembly, and installation that matches the current manufacturer instructions. For most houses in wind-prone locations, FEMA’s February 2023 guidance points to shingles classified ASTM D3161 Class F or ASTM D7158 Class H, installed with compatible starter strips and six nails per shingle. Those labels are not universal miles-per-hour guarantees: the adopted local code, the standard edition, roof geometry, exposure, and installation quality all matter.
Use the package and the product’s installation instructions—not a sales phrase such as “high wind”—to verify compliance. The following guide explains what the classifications mean, how to specify the rest of the roof, and what to check before and after a storm.
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What wind rating do asphalt shingles need?
The correct rating is the one required by the building code adopted for the property and supported by the exact roof system’s installation instructions. As a practical baseline for residential wind areas, FEMA recommends ASTM D3161 Class F or ASTM D7158 Class H. Texas Department of Insurance storm-repair guidance lists the same two classifications, but a requirement in Texas does not automatically apply in another state or jurisdiction.
Ask the building department, permit authority, or a qualified roofing professional which wind speed, exposure category, fastening schedule, and product approvals apply at the address. Coastal locations, open terrain, tall buildings, and roofs with complex edges can impose more demanding requirements than a general “high-wind” label suggests.
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Wind classifications at a glance
| Standard | What it evaluates | Classification highlighted in FEMA guidance | Important limitation |
|---|---|---|---|
| ASTM D3161 | Fan-induced, continuous wind applied to a prepared shingle deck | Class F (the highest D3161 class listed by IBHS) | It is a laboratory test of a prepared assembly, not a promise for every installed roof. |
| ASTM D7158 | Wind-pressure and sealant-resistance performance used to calculate a classification | Class H | Class-to-mph mappings depend on the standard revision and calculation context. |
Because the methods differ, “Class F” and “Class H” are not interchangeable numbers. Compare the standard and edition printed on the package, then compare that information with the code and the manufacturer’s current data sheet.
How do ASTM D3161 and ASTM D7158 differ?
ASTM D3161 uses a fan to apply continuous wind to shingles installed on a test deck. The Insurance Institute for Business & Home Safety (IBHS) identifies Class F as the highest classification in that method. ASTM D7158 evaluates uplift resistance through wind-pressure assessment and sealant-resistance measurements, then assigns a class.
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The Asphalt Roofing Manufacturers Association explains that product standards test shingles as manufactured under controlled conditions. Real roofs add variables such as deck movement, roof shape, fastener placement, sealant age, installation temperature, and prior damage. A high classification cannot compensate for a skipped nail, an incompatible starter strip, or a shingle that never sealed.
Why does installation determine wind performance?
FEMA states: “Damage to asphalt shingle roof coverings in high-wind events is often caused by either improper installation or a poor shingle seal condition.” The sealant strip must bond under the conditions specified by the manufacturer, and every fastener must land in the approved location and be driven correctly.
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FEMA’s high-wind recommendation is six nails per shingle. PNNL’s Asphalt Shingle Roofs guide likewise says six nails are generally used per strip shingle in high-wind areas and stresses accurate placement and driving. “Six nails” is not permission to copy one product’s pattern onto another: some products have different nail lines, required offsets, or special perimeter details. Follow the chosen product’s instructions and the code whenever they are more specific.
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Use the nail material, shank, head, and corrosion resistance specified for the roof and climate. Texas Department of Insurance guidance calls for galvanized or stainless-steel roofing nails with at least a 12-gauge, 0.105-inch shank and a minimum 3/8-inch head diameter, and says staples are not permitted in that guidance. Those dimensions are Texas-specific guidance; confirm the locally adopted requirements before applying them elsewhere.
A compatible starter strip creates the bonded first edge and helps keep wind from lifting the first course. PNNL notes that the starter seal bonds to the shingle above and can reduce wind damage and water entry. Use the starter strip approved for the shingle system, install it in the orientation and offset shown by the manufacturer, and do not substitute a generic strip without confirming compatibility.
Sealant, temperature, and roof-edge details
Factory-applied sealant may need sunlight and suitable temperatures to activate. If installation occurs in cold weather, dusty conditions, or before a storm, the shingles may require hand sealing or another manufacturer-approved measure. Do not apply random roofing cement over sealant lines; excess cement can interfere with drainage and may void product requirements.
Wind pressure concentrates at eaves, rakes, ridges, hips, valleys, and roof-to-wall transitions. The shingle instructions, underlayment details, drip-edge requirements, and flashing design must be coordinated at these locations. A field of well-nailed shingles can still fail if the perimeter or flashing is inadequately secured.
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How should roofers install asphalt shingles?
Roofers should begin with the code, the exact product instructions, and a sound deck. The following sequence keeps the decisions in the order that affects wind resistance.
- Confirm the site criteria. Identify the adopted code, design wind speed, exposure category, roof slope, and any local or insurer requirements. Obtain the product’s current installation manual and approval documents.
- Inspect and prepare the deck. Remove or expose enough roofing to find rot, delamination, loose panels, or inadequate attachment. Replace damaged or deteriorated decking before covering it. A shingle classification does not repair a weak substrate.
- Verify slope and underlayment. Texas guidance limits asphalt shingles to roofs with a slope of 2:12 or greater. PNNL notes that slopes from 2:12 up to 4:12 generally use double underlayment; the adopted code and product instructions control the final detail. Low-slope applications need careful water-shedding design and may not be approved for every shingle.
- Install eave protection, underlayment, and flashing. Use the layers, overlaps, and fasteners required for the jurisdiction and site wind speed. Integrate wall, chimney, skylight, valley, and vent flashing rather than relying on surface sealant.
- Install the approved starter strip. Keep the strip straight, correctly offset, and bonded as the manufacturer shows. Pay particular attention to rakes and eaves, where wind can begin lifting.
- Fasten each shingle accurately. Use the specified nail type and number—six nails per shingle is FEMA’s high-wind recommendation unless the product or code requires another arrangement. Nails should be flush with, not cutting through, the shingle, and should sit in the printed nail zone.
- Complete hips, ridges, and edges. Use the approved hip-and-ridge product or the field-shingle method in the manual. Secure caps and perimeter courses with the required fasteners and sealant.
- Document the installation. Keep the product package, lot information, installation manual, permit records, photographs of concealed layers, and invoices. These records help with future repairs, warranty questions, and insurance claims.
What should you check when reroofing in a high-wind area?
Reroofing is an opportunity to correct weaknesses that a new shingle cannot hide. Start with the deck and framing, then evaluate the complete water-shedding and wind-load path.
- Deck attachment: Look for loose panels, corroded fasteners, gaps, and damaged edges. Replace compromised sheets and repair framing before installing underlayment.
- Roof geometry: Hips, valleys, dormers, wide overhangs, and multiple roof levels create different wind pressures and flashing demands.
- Perimeter securement: Check fascia, drip edge, rake edges, and soffit connections. Wind can enter at an edge and peel back otherwise sound shingles.
- Underlayment and slope: Match the number of layers and material to the code, slope, climate, and manufacturer’s approved application.
- Ventilation and penetrations: Confirm that vents, pipes, skylights, and mechanical equipment are flashed and mechanically secured.
- Existing seal condition: Brittle, dirty, displaced, or previously lifted shingles may not reseal after being pressed back down.
If an existing roof has widespread granule loss, creases, lifted tabs, exposed underlayment, or deck movement, a professional inspection is safer than judging wind resistance from the ground. Avoid walking on damaged or wet shingles.
Are wind ratings the same as hail ratings?
No. ASTM D3161 and ASTM D7158 address wind resistance. Hail impact is evaluated under different standards, including UL 2218 and ANSI/FM 4473. FEMA suggests considering Class 4 impact-rated asphalt shingles when hail protection is a goal, but a Class 4 impact rating is not a high-wind classification.
IBHS describes UL 2218 as an impact test using steel balls and classes 1 through 4. Choose impact-rated products only when hail exposure, insurance requirements, or the owner’s risk priorities justify them; retain the required wind classification and installation details as separate checks.
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How do you compare two high-wind shingle products?
Compare the complete approved system, not marketing adjectives or a single class letter. Use this checklist:
- Test method and class: Does the package show ASTM D3161 Class F, ASTM D7158 Class H, or another classification accepted by the local code?
- Edition and documentation: Which standard revision is cited, and does the current product data sheet match the package?
- Fastening pattern: What nail type, number, location, and perimeter treatment are required?
- Starter-strip compatibility: Is the specified starter made for that shingle, and are separate rake details required?
- Site fit: Is the roof slope, exposure, climate, and geometry within the approved application?
- Hail performance: If hail matters, is there a separate UL 2218 or ANSI/FM 4473 impact classification?
- Warranty and cost: Verify current terms, exclusions, contractor requirements, and installed quotations directly from the manufacturer and local installers. These vary and are not established by a wind class.
When two products meet the same code requirement, installation quality and system compatibility are usually more meaningful decision points than a higher-sounding marketing label. Keep the written approval for the exact product and roof configuration.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should you do after a high-wind storm?
Inspect from the ground first and keep clear of downed wires, unstable trees, and loose roofing. Use binoculars to look for missing or shifted shingles, exposed underlayment, lifted ridge caps, damaged flashing, and debris impacts.
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesPhotograph conditions before temporary repairs, note the date and storm, and prevent interior water entry with a safe temporary measure. Do not nail loose shingles through an unapproved location or cover wet decking without addressing trapped moisture. A qualified roofer can distinguish cosmetic granule loss from wind-created creases, unsealed edges, and damage to the deck or flashing. Follow the insurer’s claim procedures and the local permit rules before permanent work.
What are the most common mistakes with high-wind asphalt shingles?
- Choosing a product because its package says “high wind” without checking ASTM method, class, and local approval.
- Using fewer nails than required, placing nails above or below the printed line, or driving them too deeply.
- Mixing a starter strip, ridge cap, or sealant that the shingle manufacturer does not approve.
- Installing over rotten or inadequately attached decking.
- Assuming a D7158 class has one universal mph meaning across all standard editions.
- Calling a hail-impact class a wind rating.
- Ignoring roof edges, hips, ridges, valleys, and flashing while focusing only on the shingle field.
- Assuming a laboratory classification guarantees an old, poorly sealed, or storm-damaged roof.
Bottom line for selecting asphalt shingles in high winds
Specify a shingle classification accepted by the local code—often ASTM D3161 Class F or ASTM D7158 Class H under FEMA guidance—then install the entire roof assembly exactly as the current product instructions require. Six properly placed nails, a compatible starter strip, sound decking, correct underlayment, and secure edges are as important as the label on the bundle. Treat wind and hail ratings separately, and read every class together with its test method and standard edition.
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Frequently Asked Questions
Can I install Class H shingles over my existing shingles?
Sometimes, but only if the local code and the product instructions allow reroofing over the existing layer. The underlying roof must be dry, flat, adequately attached, and free of damaged decking; otherwise a tear-off and deck repair are needed to create the tested assembly.
Does using six nails guarantee that a roof will survive a hurricane or tornado?
No. Six nails address one installation variable. Storm intensity, debris, roof geometry, edge securement, sealant condition, deck attachment, and workmanship all affect the outcome, and test classifications do not promise survival in every event.
Are architectural asphalt shingles automatically suitable for high winds?
No. Shingle profile or appearance does not establish a wind classification. Check the package and current technical documents for the ASTM method and class accepted by the jurisdiction, along with the required fastening and starter-strip details.
How can I tell whether wind lifted a shingle or normal aging caused the problem?
Wind damage often leaves creases, displaced courses, exposed underlayment, missing tabs, or lifted ridge and rake components, while aging may show widespread brittleness and granule loss without displacement. Because roof access can be hazardous and evidence can be subtle, document conditions from a safe location and arrange a qualified inspection.
