Sophia Delgado
When installing HardiePlank siding, choosing the right size nails is crucial. While it may seem insignificant, the correct nail size can significantly impact the durability and appearance of your siding. Using the wrong size nail can lead to issues such as cracking the siding or damaging the structure of your home. To avoid these problems, it is recommended to use siding nails instead of roofing nails, as siding nails have smaller heads that minimize the risk of splitting the HardiePlank siding. Additionally, the nail length should be sufficient to penetrate the wood sheathing by at least one inch. Various factors, such as climate and siding type, also play a role in determining the most suitable nails for HardiePlank siding.
| Characteristics | Values |
|---|---|
| Nail head size | Should be small to minimize the risk of splitting the HardiePlank siding during installation. Roofing nails, for instance, have larger heads and can cause the siding to crack, especially in colder weather. |
| Nail length | Should penetrate the wood sheathing by at least 1 inch. Specific lengths mentioned include 1-1/4", 1", and 2" (6d) nails. |
| Nail type | Either SS or hot-dipped galvanized. |
| Nail shape | Options include spiral and ringshank. |
| Coating | Galv coating is recommended, especially in humid climates. |
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What You'll Learn
Siding nails are recommended for HardiePlank
When it comes to installing HardiePlank siding, choosing the right type and size of nails is a critical decision. The correct nail selection can significantly impact the durability and appearance of your siding. It is highly recommended to use siding nails specifically designed for this purpose.
Siding nails are specifically designed to minimise the risk of splitting or cracking the HardiePlank siding during installation. They feature smaller heads compared to roofing nails, reducing the likelihood of damage. It is important to avoid using nails with large heads as they can cause the siding to crack, especially in cold weather.
For HardiePlank siding, it is generally recommended to use either stainless steel (SS) or hot-dipped galvanised siding nails. The galvanised coating provides enhanced protection, especially in humid climates. Additionally, plastic-collated nails are a good choice as they offer a superior galv coating.
The length of the siding nails is also an important consideration. It is recommended to use nails that penetrate the wood sheathing by at least 1 inch. HardiePlank is typically 5/16" thick, so nails longer than 1-1/16" are suitable. Some sources suggest using 2" nails (also known as 6d nails) for outdoor installations to ensure the siding can withstand storms or hurricanes.
When using a finish nailer, it is recommended to use 1-1/4" nails. However, if you only have 1" nails, it is acceptable to use them, provided you use a few more nails along each furring strip to compensate for the shorter length. Using a pneumatic nailer with 1" nails may result in the nails contacting the concrete beneath the Hardie-board.
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Nail heads should be small to minimise cracking
When installing HardiePlank siding, choosing the right size nails is critical. While it may seem like a small detail, selecting the correct nail size can significantly impact the durability and appearance of your siding.
Using the wrong size nail can lead to various issues, including cracking the siding and damaging the structure of your home. One of the most important considerations is ensuring that the nails penetrate the wood sheathing by at least 1 inch. Nails that are too short won't penetrate the wood deeply enough, resulting in loose siding that can shift or fall off over time.
To minimise cracking, it is recommended to use siding nails instead of roofing nails. Siding nails have smaller heads, reducing the risk of splitting the HardiePlank siding during installation. Nails that are too large or driven with excessive force can cause the siding to crack, especially in cold weather.
Additionally, the material of the nails is important. Hot-dip galvanised or stainless steel nails are recommended as they offer superior protection against rust and corrosion. These nails will help maintain the integrity of your siding over time.
When using a nail gun, such as the Hitachi NV65AH, it is suggested to use plastic collated nails. The galvanised coating provided by plastic collation is better suited to humid climates, such as Florida, where thunderstorms are common.
Finally, it is worth noting that the type of nail application, whether face nailed or blind nailed, will also determine the appropriate nail type. In face nail applications, where the nail heads are exposed, hot-dipped nails are recommended to prevent water from reaching the head and causing corrosion.
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Nails should penetrate wood sheathing by at least 1 inch
When installing HardiePlank siding, choosing the right size nails is crucial. Using the wrong size nail can lead to issues such as cracking the siding or damaging the structure of your home.
To avoid these problems, it is recommended to use nails that penetrate the wood sheathing by at least 1 inch. This ensures that the siding is firmly attached and provides the necessary stability to withstand various weather conditions. Nails that are too short won't penetrate the wood deeply enough, resulting in loose siding that can shift or fall off over time.
The most commonly used nail sizes for HardiePlank siding are 2 1/4-inch nails and 2 1/2-inch nails. The 2 1/4-inch size is the most frequently used option, as it provides sufficient penetration without risking damage to the underlying structure. The slightly longer 2 1/2-inch nails are suitable for thicker sheathing, but caution must be exercised to avoid penetrating too deeply into the wall and potentially hitting wires or other interior elements.
It is advised to avoid using 3-inch nails for HardiePlank siding. While some contractors may recommend them, there is a risk of penetrating too far into the wall, which could result in electrical issues or damage to the interior of the home.
In addition to nail length, it is important to consider the type and material of the nails. Siding nails are specifically designed for this application and have smaller heads that minimize the risk of splitting the HardiePlank siding during installation. Nails with larger heads, such as roofing nails, should be avoided as they can cause cracking, especially in colder weather. Hot-dip galvanized or stainless steel nails are recommended as they offer superior protection against rust and corrosion, ensuring the long-term integrity of the siding.
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Hot-dipped nails are best for face nail applications
When installing HardiePlank siding, choosing the right size and type of nails is critical. Not only does it affect the durability and appearance of the siding, but using the wrong size nail can also lead to issues such as cracking the siding or damaging the structure of your home.
For face nail applications, hot-dipped nails are the best option. Face nailing involves exposing the nail heads, which can be an issue when the nails are exposed to water. The alkalide nature of Hardie siding can cause the metal to be attacked more aggressively, requiring a protective coating.
Hot-dipped galvanised nails are steel nails that undergo a specific process to make them highly resistant to rust. First, they are chemically cleaned, and then they are immersed in a vat of molten zinc, sometimes containing lead, at a temperature between 815 and 850 degrees Fahrenheit. This high temperature causes the steel atoms to vibrate rapidly and interlock with the zinc atoms, creating a zinc-steel alloy. When the nails are removed from the molten zinc, they are coated with a layer of pure zinc, which further protects the steel from water damage. The best nails may even be dipped a second time for added protection.
Other galvanization processes, such as hot galvanizing or electroplating, do not offer the same level of protection as hot-dipping. Hot galvanizing involves tumbling zinc dust or chips with cold steel nails in a hot drum, while electroplating uses a chemical liquid and electricity to create a thin coating of zinc. These methods result in nails that are more susceptible to rust when exposed to the elements.
Therefore, when choosing nails for face nail applications in HardiePlank siding, opt for hot-dipped galvanised nails to ensure maximum protection against rust and water damage.
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Plastic collated nails are good for humid climates; other nail lengths are also mentioned
When installing HardiePlank siding, choosing the right size of nails is critical. Using the wrong size nail can lead to issues such as cracking the siding or damaging the structure of your home. It is recommended to use siding nails instead of roofing nails, as siding nails have smaller heads that minimize the risk of splitting the HardiePlank siding during installation.
In terms of nail length, it is suggested to use nails that are 2 inches long, also known as 6d or 6-penny nails, especially if the siding is installed outdoors to withstand storms or hurricanes. However, some people have used 1-inch nails or 1-1/4-inch nails with a few more nails along each furring strip to compensate for the shorter length.
The type of nail also matters. Hot-dipped nails are recommended for face nail applications to prevent corrosion from water exposure. For blind nailing, where the nails are not exposed to water, EG nails are acceptable. Additionally, the nail's coating is important in humid climates. Plastic collated nails with a galv coating are recommended for humid regions like Florida, as they provide better protection against corrosion.
Some people also recommend using a 15-gauge trim nailer and putty over the nail heads to avoid having too many nail heads exposed. Using a nail gun or a flush nailer attachment can also help prevent over-penetration.
Overall, it is important to prioritize using nails that penetrate the wood sheathing adequately and choosing the appropriate type of nail for the specific application and climate conditions.
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Frequently asked questions
The length of the nails depends on the type of siding and the thickness of the wood. For outdoor installation, HardiePlank siding instructions recommend using 2" long nails (6d nail or 6-penny nail) to prevent the siding from being ripped away in a storm. For 1 1/4" furring strips, 1" nails can also be used.
Siding nails are recommended for HardiePlank siding as they have smaller heads that minimise the risk of splitting the plank during installation. Hot-dipped nails should be used in face nail applications where water may get to the head. For blind-nailed applications, EG nails are suitable as the nails are not exposed to water.
It is important to ensure that the nails penetrate the wood sheathing by at least 1 inch. Using a nail that is too short may require using more nails along each furring strip to compensate for the decreased "bite". Plastic collated nails are also recommended due to their superior galv coating.
