Roofing Shingle Nails: Essential Guide for Homeowners

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A carpenter wearing gloves uses a hammer to drive nails into wooden planks in a workshop.
Credit: pexels.com, A carpenter wearing gloves uses a hammer to drive nails into wooden planks in a workshop.

Roofing shingle nails are a crucial component of any roofing project, and understanding their importance can save you a lot of headaches down the line.

The type of roofing shingle nail you choose will depend on the type of shingles you're using, with galvanized nails being suitable for asphalt shingles and aluminum nails for metal shingles.

A good roofing shingle nail should be 1-2 inches long and have a flat head to prevent the nail from countersinking into the shingle.

Properly installing roofing shingle nails is essential to ensure a secure and watertight roof.

Nail Specifications

The length of a roofing nail is typically between 1 inch and 2 ½ inches, which is crucial for effective shingle installation.

The diameter, or gauge, of a roofing nail can also vary, usually around 11 to 12 gauge.

A 9.5mm minimum head diameter is the minimum requirement for a roofing nail that's in compliance with IBC guidelines.

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A 7/32"-diameter flat head provides ample bearing surface to secure all types of shakes and shingles, making it a suitable choice for exterior nails.

Using the wrong size can lead to problems such as shingle blow-off or penetration of the roof deck, so it's essential to get it right to avoid costly repairs or replacements in the future.

Materials

Aluminum nails for roofing are very common because of their cost, often used for simple roof projects in many parts of the country.

Galvanized steel nails resist rust and corrosion, making them a popular choice for asphalt shingles.

Stainless steel nails are a more durable option, but they come at a higher cost.

Using aluminum nails with copper shingles can lead to galvanic corrosion, which may weaken the roof over time.

Electro-galvanized steel roofing nails are a cost-effective alternative to stainless steel, protected by a thin layer of zinc to prevent rust and corrosion.

Galvanized nails may not last as long as stainless steel versions when exposed to harsh weather elements, but they perform well under regular conditions.

Types of

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Most roofing nails are made from aluminum, stainless steel, galvanized steel, or copper. Aluminum nails are very common because of their cost, but they're often the "good enough" type used for simple roof projects.

The metal a nail is made from can make a big difference in how well it holds down a shingle and how long it lasts over time. Stainless steel and galvanized steel nails are often more durable than aluminum, but copper nails are even more resistant to corrosion.

Not all roofing nails are created equal, each type has its own unique purpose depending on the roofing material used and local weather conditions. Smooth shank nails are the most common type, known for their affordability and ease of use.

Ring shank nails have rings around the shank, providing extra grip, making them ideal for high-wind areas. They offer greater holding power than smooth shank nails, reducing the risk of shingle blow-off.

Screw shank nails have a twisted shank that acts like a screw when driven into the wood, providing exceptional holding power. They're suitable for premium roofing materials and heavy-duty applications.

Understanding Sizes

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The size of a roofing nail is crucial for effective shingle installation. It's essential to get it right to avoid costly repairs or replacements in the future.

The length of a roofing nail is typically between 1 inch and 2 ½ inches. Longer nails are used for thicker materials or additional layers of shingles.

Choosing the right size of roofing nail depends on the specific requirements of your roofing project. Thicker shingles or roofs with multiple layers may require longer nails.

The diameter, or gauge, of a roofing nail can also vary, usually around 11 to 12 gauge. Nails with a larger diameter may be used for certain types of roofing materials.

Using the wrong size of roofing nail can lead to problems such as shingle blow-off or penetration of the roof deck. Proper nail size ensures shingles are held firmly in place, enhancing the overall durability of the roof.

The minimum head diameter for a roofing nail that's in compliance with IBC guidelines is 9.5mm. This is an important consideration when selecting the right nails for your project.

Nail Usage and Quantity

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You'll need to know how many nails to buy for your roofing project, and the quantity is just as important as the quality and classification of the nails.

To determine how many nails per shingle, follow GAF's guidelines, which recommend using 6 nails per shingle for most architectural and three tab shingle applications.

This six nail requirement is especially important for high wind areas, where a 5 nail per shingle pattern may not be sufficient.

You'll need an average of 506 roofing nails per square, based on the manufacturer's recommended 6 nail per shingle strategy.

How Long?

The length of roofing nails can be a bit tricky to figure out, but it's not as straightforward as measuring the diameter. The International Building Code doesn't specify a specific length for shanks, but it does say the nail must penetrate through the roofing materials.

You'll find that the length of the nail shank varies depending on the type of shingle you're using. For example, wood shingles require a longer shank than architectural shingles.

A good rule of thumb to keep in mind is that the nail must not be less than ¾ inch into the roof sheathing. This ensures a secure hold on the roof.

Fiberglass shingles, on the other hand, have the same nail length requirements as asphalt-style shingles.

How Many Shingles to Buy?

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You'll need to calculate the number of shingles you'll need to buy based on the size of your roof. One square of roofing is about 100 square feet of roof material.

To determine how many shingles you'll need, consider that one bundle of shingles covers about ⅓ of a roofing square, so you'll need three bundles of shingles per square. Each shingle bundle will contain about 28 shingles, so you can expect to have 84 shingles per square in total.

The number of shingles you need will depend on the size of your roof, but a good rule of thumb is to assume you'll need three bundles of shingles per square.

Gun vs. Hammer

Using a nail gun can be significantly faster than hammering nails by hand, especially when working with asphalt shingles that require at least six nails per shingle.

You'll want to choose your tool of choice before starting the project because it will affect your nail choice and how long it takes to complete the job.

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Nail guns are more expensive than hammers, whether you rent one or purchase one from a big box retailer.

Hammering nails by hand requires using 1.25’’ or 1.5’’ loose roofing nails, which come in 1 pound, 5 pound, or 30 pound boxes.

If you choose to use a nail gun, look for electro galvanized roofing nails, which are available in the same box sizes as loose roofing nails.

Nail Tools and Accessories

When working with roofing shingle nails, having the right tools and accessories can make all the difference.

A nail set is a must-have for countersinking nails, as it helps to create a smooth surface.

A hammer is also essential, but a roofing nailer can significantly speed up the process.

Roofing nails are designed with a curved or angled shank to prevent splitting the shingle.

Coil for Guns

Using a nail gun for roofing can be a game-changer, but it requires the right type of nails. Coil roofing nails are specifically designed for nail guns and come attached to each other in "coils" for easy feeding through the gun.

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You'll want to look for electro galvanized roofing nails if you choose to use a nail gun, as they're the recommended type for all nail guns.

Nail guns are significantly faster than hammering nails by hand, especially with asphalt shingles where you'll need to fasten at least six nails per shingle.

Coil roofing nails come in the same box sizes as loose roofing nails, which are available in 1 pound, 5 pound, or 30 pound boxes.

Installation Tools

Using the proper tools for nail installation is essential to avoid damaging both the shingles and the nails themselves. A pneumatic nail gun can speed up the process and ensure consistent nail placement.

A pneumatic nail gun can be adjusted to avoid overdriving the nails, which can harm the shingles. Adjusting the pressure is crucial for proper nail installation.

Manual installation with a hammer can provide better control in certain situations, especially on steep roofs or with specialty shingles. This method is often preferred by experienced roofers.

Important Considerations

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Compatibility is key when choosing roofing nails. You want to make sure the nails you select are compatible with the roofing materials on your project.

Weather resistance and corrosion resistance are also crucial factors to consider. This ensures the nails will withstand the elements and last a long time.

Driving nails too hard can crack shingles or cause them to sit unevenly.

Local Building Codes

Local Building Codes are not just a formality, they're a necessity for any roofing project. Familiarize yourself with local regulations to ensure the safety and durability of your roof.

Compliance with these codes can affect insurance claims in the event of damage. This is a crucial consideration for homeowners, as it can impact their financial well-being.

Local building codes dictate various aspects of roofing, including the type and size of nails that can be used. This means you should check with your local building authority to ensure your nail choices meet all necessary legal standards.

It's always better to err on the side of caution and consult a professional if you're unsure about any aspect of local building codes.

Factors to Consider

Craftsman hammering nails into wood, showcasing woodworking skills and tools in action.
Credit: pexels.com, Craftsman hammering nails into wood, showcasing woodworking skills and tools in action.

Driving nails too hard can crack shingles or cause them to sit unevenly, so use moderate pressure to ensure a flush finish. This can save you from costly repairs down the line.

Nails that aren't driven in far enough can lead to loose shingles and potential blow-offs, which is a major concern for homeowners.

Using the wrong type of nail for your roofing material can lead to premature failure, so always choose a nail compatible with your shingles and local climate. This is a crucial factor in ensuring the longevity of your roof.

Compatibility with the roofing materials on your building project is a critical factor to consider when selecting roofing nails. This ensures that your roof is properly secured and can withstand various weather conditions.

Weather resistance and corrosion resistance are also essential features in robust construction, as they help ensure long-lasting performance of your roofing nails.

Frequently Asked Questions

What size roofing nail for 7/16 OSB?

For 7/16" OSB roof decking, use a 1 1/4" roofing nail to ensure the tip penetrates the decking as required by code. This nail length provides adequate penetration for a secure installation.

Lou Tarchiani

Senior Writer

Lou Tarchiani is a passionate writer, avid traveler, and animal lover. She has a diverse background, having worked in fields ranging from marketing to education. Her travels have taken her to over 20 countries, where she has immersed herself in local cultures and gained unique perspectives on the world.

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