Can You Use 2 Nail Guns on One Air Compressor for Roofing? (These Compressors Can)

Ever wondered if it’s possible to power two nail guns with just one air compressor? In this article, we’ll explore the ins and outs of using a single air compressor to power multiple nail guns for roofing projects. Let’s dive in!

Can you use 2 nail guns on one air compressor for roofing?

Using two nail guns simultaneously with one air compressor for roofing is possible, but there are important considerations to keep in mind. 

First, you need to ensure that your air compressor has sufficient capacity to power both nail guns.

Check the compressor’s specifications, specifically its airflow rate (CFM – cubic feet per minute) and pressure (PSI – pounds per square inch), to confirm it can handle the demands of two nail guns.

Also, verify that the nail guns you plan to use are compatible with your air compressor.

Check the recommended airflow and pressure requirements for each nail gun, and ensure that the compressor’s specifications meet or exceed the combined requirements of both nail guns.

To connect both nail guns to the air compressor, you’ll need the appropriate hoses and fittings. Make sure the hoses are long enough to reach your working area without causing any restriction or loss of pressure.

Consider whether the nail guns need to fire simultaneously or if sequential firing is acceptable.

If both nail guns need to fire at the same time, make sure they have the capability for sequential firing.

Some nail guns are designed for single sequential firing, which means you must release the trigger of one nail gun before firing the other.

Top 3 air compressors with dual-couplers for roofing

Most Popular
CRAFTSMAN Air Compressor
  • Proudly made in the USA with Global Materials.
  • Portable: 6-gallon capacity for maximum portability.
  • No maintenance: Durable, oil-free pump for long life.
  • Pressure: 150 Max PSI ensures adequate pressure.
  • Quick recovery time: 2.6 SCFM at 90 PSI.
Most Reliable
Bostitch Air Compressor Combo Kit
  • SB-1850BN: Drives 18GA brad nails from 5/8" to 2"
  • SB-1664FN: Drives 16GA finish nails from 1-1/4" to 2-1/2"
  • BTFP71875: Drives 3/8" crown staples and 18GA brad nails
  • Heavy-duty stapler: Staple crown and brad nails
  • 1/4" x 15' PVC air hose with fittings
More Power
Makita Big Bore Air Compressor
  • Oil lubricated: Cooler running pump, minimizes wear
  • Durable cast iron cylinder: Reduces wear, increases pump life
  • Powerful 2.5 HP motor: Produces 4.2 CFM at 90 PSI
  • Large automotive style air filter: Increased air intake, greater efficiency
  • Lower RPM pump: Reduced noise, improved durability
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What size air compressor do I need to run two nail guns?

To successfully operate two nail guns simultaneously, you’ll need an air compressor capable of providing sufficient airflow and pressure. The specific requirements will depend on the nail guns you plan to use.

For standard roofing nail guns, a typical recommendation is an air compressor that can deliver 4.0 CFM (cubic feet per minute) at 90 PSI (pounds per square inch). Compressors of this size usually come with a 6-gallon tank, which is sufficient for operating a single roofing nailer.

However, when connecting two roofing nail guns simultaneously, you’ll need an air compressor with a higher CFM rating than if you were using just one nail gun. A general guideline is to add the CFM requirements of each nail gun together and then multiply the total by 1.5 to account for any pressure drop in the air hose.

For example, if each roofing nail gun requires 2.5 CFM, the total requirement would be 5 CFM (2.5 + 2.5 = 5). Applying the multiplication factor, you’ll need an air compressor capable of delivering at least 7.5 CFM (5 x 1.5 = 7.5).

How does the air compressor power the nail gun?

An air compressor powers a nail gun by generating compressed air and delivering it to the nail gun through a connected air hose. Here’s a brief explanation of how the process works:

  • Compressed air generation: The air compressor consists of a motor-driven pump that compresses air. As the motor operates, it draws in air from the surrounding environment and compresses it by reducing its volume.
  • Air tank storage: The compressed air is typically stored in a tank within the air compressor. The tank helps maintain a consistent and pressurized air supply, ensuring that the nail gun receives a steady flow of compressed air when needed.
  • Regulator adjustment: The air compressor usually includes a regulator that allows the user to adjust the pressure of the compressed air. By setting the desired pressure level, the user can control the force with which the nails are driven into the material.
  • Air hose connection: An air hose connects the outlet of the air compressor to the inlet of the nail gun. The hose transports the compressed air from the tank to the nail gun, delivering the power needed for the nail gun to operate.
  • Trigger activation: When the user pulls the trigger on the nail gun, it opens a valve inside the gun, allowing the compressed air to flow from the hose into the gun’s internal mechanism.
  • Nail driving mechanism: The compressed air enters the nail gun’s internal mechanism, which includes a piston or driver blade. The compressed air forces the piston or blade forward, which drives the nail into the material.
  • Exhaust and reset: After the nail is driven, the compressed air is released through an exhaust port in the nail gun, and the piston or blade resets to its original position. The nail gun is now ready for the next nail to be driven.

Compressed air generation

When using two nail guns with an air compressor, the air compressor’s CFM output becomes crucial. You’ll need an air compressor that can generate a higher CFM to accommodate the airflow requirements of both nail guns simultaneously.

Air tank capacity

The tank capacity of the air compressor remains important when using two nail guns. A larger tank can help maintain a consistent supply of compressed air for both nail guns, reducing the need for the compressor to cycle frequently.

PSI pressure rating

For a multi-coupler air compressor running two nail guns, the recommended PSI pressure rating remains the same as when using a single nail gun. Typically, roofing nail guns operate within a range of 70 to 110 PSI, so ensure your air compressor can deliver this pressure consistently.

Horsepower (HP)

The horsepower requirement for the air compressor may increase slightly when operating two nail guns simultaneously. Additional power may be necessary to sustain the higher CFM output and maintain proper pressure levels for both nail guns.


When using two nail guns, the durability of the air compressor becomes even more important. Ensure the compressor is built to withstand the increased workload and continuous operation required by running multiple tools.

Size and weight

The size and weight of the air compressor can play a role in the overall usability, portability, and storage requirements, especially when using two nail guns. Consider the available space, transportation needs, and any weight restrictions when selecting an air compressor.

Sound level

Operating two nail guns simultaneously with an air compressor may increase the overall noise level. If noise is a concern, consider air compressors specifically designed for quieter operation or utilize hearing protection when working.

What are the pros and cons of using one air compressor for two nail guns?


  • Cost savings: Using a single air compressor for two nail guns can be more cost-effective than purchasing separate compressors for each gun. It reduces the need for additional equipment and saves money.
  • Portability: Carrying and transporting one air compressor is generally easier than managing multiple compressors. It can enhance mobility and convenience, especially when working on different job sites.
  • Space efficiency: owning one air compressor instead of multiple units saves storage space. This can be beneficial, particularly if you have limited space available for equipment storage.
  • Simultaneous operation: if the air compressor has sufficient capacity, it allows both nail guns to be used simultaneously. This can increase productivity and save time, especially when multiple users are involved.


  • Limited airflow: depending on the size and capacity of the air compressor, sharing it between two nail guns may lead to a reduced airflow for each gun. insufficient airflow can impact the performance and efficiency of the nail guns, resulting in slower or less effective nail driving.
  • Pressure fluctuation: running two nail guns off a single air compressor can cause pressure fluctuations. If both guns require high-pressure settings, maintaining consistent pressure for both guns simultaneously might be challenging.
  • Hose length and tangle: connecting two nail guns to a single air compressor requires longer air hoses, increasing the risk of hose tangles or restrictions. This can impede mobility and create potential hazards on the work site.
  • Sequential firing: some nail guns have sequential firing mechanisms, meaning one gun must be released before the other can fire. This can disrupt the workflow or cause delays if both guns need to be fired simultaneously.
  • Maintenance and wear: using two nail guns intensively with one air compressor can increase wear and tear on both the guns and the compressor. Regular maintenance and monitoring are essential to ensure proper functioning and prevent premature breakdowns.

What kind of nail gun does not need a compressor?

Cordless nail guns operate using rechargeable batteries instead of relying on compressed air from an air compressor.

Lithium-ion batteries power these guns, providing the necessary energy to drive nails into various materials.

Cordless nail guns offer portability and convenience as they eliminate the need for air hoses and tethering to an air compressor.

Cordless nail guns come in various types, such as brad nailers, finish nailers, and framing nailers, providing options for different applications.

They offer the flexibility to work in areas where access to power outlets or air compressors may be limited or impractical.

When using a cordless nail gun, it’s essential to consider battery life and recharge times.

Depending on the model and battery capacity, runtime may vary. It’s recommended to have spare batteries available to ensure uninterrupted operation.

Cordless nail guns provide a convenient and portable solution for nailing tasks without the need for an air compressor.

However, it’s important to note that they may have limitations in terms of power and nail capacity compared to pneumatic nail guns powered by air compressors.

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Author: Logan

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