hitachi roofing nailer

Review & Buying Guide: Hitachi NV45AB2 Roofing Nailer (2018)

We hope you love the products we recommend! Just so you know, when you buy through links on our site, we may earn an affiliate commission. This adds no cost to our readers, for more information read our earnings disclosure.

This Hitachi Roofing Nailer NV45AB2 is the ideal choice for professional contractors and for DIY-ers. This tool is reliable and offers accurate nailing without a superior price tag. It can handle rough and long projects.

It’s lightweight, well-balanced, easy and comfortable to operate with one hand, and you can count on it even in extreme weather conditions (hot or cold).

If you want to see how this Hitachi nailer compares with the competition, check out our latest article on the best roofing nailers 2018.


  • All-Weather Nailer
  • Carbide tipped push leveler
  • Anti-slip rubber pads on the body
  • Ergonomic grip & Well-Balanced
  • Lightweight at 5.5 lbs
  • Metal Housing for Durability
  • Quick Depth of Drive Adjustment
  • Fast nailing: 3 nails per second
  • Nail size: 7/8 inch to 1-3/4 inch


  • After extended use can misfire.

Check Price on Amazon

It’s a pretty straightforward tool, that has all the parts placed logically so it could be easy to use for anyone who never touched a roofing nailer.

All-Weather Nailer: Hot or Cold, You Can Count on it.

winter roofing nailer

No matter the weather, hot or cold, Hitachi can handle it. One of the greatest things about this nailer is that was designed to withstand extreme weather conditions. Hitachi roofing nailer is the tool you can rely on even in winter, rain or in cold & hot temperatures.

Many other roofing nailers simply freeze up and stop working when the temperature gets too cold. Hitachi NV45AB2 was strictly tested in the most extreme conditions and you can count on it in any weather.

The secret of Hitachi is the air-powered nail-feed system, that automatically eliminates dirt, residue, and moisture from the tool.

If you need to install a roof in winter or repair a roof in cold-weather, then Hitachi is the nailer we recommend.

Magazine Layout, Capacity and Nails

This nailgun is designed with a side-loaded magazine, one of the most popular layouts found usually on roofing nailers.

The magazine accepts up to 120 coiled nails, sized from 7/8-inch to 1-3/4 inch with a shank diameter of 0.120.

It’s nice to have the option to use smaller sized nails, most of the roofing nailers allow nails sized from 3/4 inch to 1-3/4 inch.

When you’re installing a roof you’ll need to reload the magazine pretty often. It’s crucial that the reloading process to be easy to do.

Hitachi magazine is easy to open, reload and close. The process of putting a new coil of nails is straightforward, and after some time can be done in a few seconds.

Specs and Values Table

Specifications Value
Power Source Air-Powered
Operating Pressure 70-120 PSI
Magazine Capacity 120 nails
Weight 5.5 lbs (2.5 kg)
Collation Type Wire
Nail Gun Angle 16-degrees
Strip or Coil Coil
Minimum Fastener Size 7/8 inch
Maximum Fastener Size 1- 3/4 inch (45mm)
Nail Shank Diameter 0.12 (3mm)

Check Price on Amazon

Lightweight, Well-Balanced and Ergonomic Grip

The weight of your tools is very important when you’re working 12 hours a day. Holding a heavy hand-tool all day long can increase fatigue, stress, and pain on the forearm, wrist, neck and ultimately on the entire body.

Hitachi NV45AB2 is a lightweight nailer and it feels good in the hands. Due to its only 5.5 lbs (2.5kg), ergonomic grip and good balance, the tool can be used all day long with comfort.

The grip is rubberized, ergonomic and comfortable to hold. It’s well-balanced, it’s easy to maneuver with one hand.

The weight distribution is spot-on, and that makes you feel in control increasing your productivity and nailing accuracy.

Rubber Pads on the Body: It doesn’t slide off the roof

The tool has rubber pads on the sides to keep it in place even on the steepest roofs. When you’re not using it, you can securely put it down on the roof without the fear that’ll slide off.

These small rubberized pads create friction with the pitched roof and keep your tool in place.

Power Source: Pneumatic (Air-Powered)

This Hitachi roofing nailer is an air-powered tool. These pneumatic roofing nailers require an air compressor like this (link to Amazon) in order to work.

Pneumatic power is the most common power source used by roofing nailers.

Make sure to look at the CFM (air volume) and PSI (air pressure) of the air compressor to be compatible with your nailer.

Hitachi NV45AB2 works with the air pressure of 70 to 120 PSI. Don’t exceed the maximum recommended air pressure.

Built to Last: Metal Housing for Durability

The nailer is made to last, to withstand harsh roofing conditions and to handle the abuse. Somehow, Hitachi managed to add extra durability to the nail-gun while keeping it lightweight.

Comes with less plastic, and the metal housing protects it from extreme conditions and increases its longevity.

Hand tools always get dropped or roughly thrown away. This Hitachi nail-gun is well-constructed and solid-built and is able to handle the abuse without breaking.

Less Wear with Carbide Tip Push Leveler

The carbide tip is present to avoid unnecessary wear, making the nose always sit even on the work surface. This increases the durability and allows you to drive nails perfectly flat every time.

Precision Nailing: Easy Drive of Depth Adjustment Feature

depth adjustment hitachi

It comes with a smartly placed knob adjuster that allows you to control the nailing depth. Depending on the length of the nails, on the work surface, you need to adjust the depth according to your needs.

The nailer can fire nails shallow,  flush or countersink. The knob can be twisted easily to adjust to the desired depth, even if you’re wearing work gloves.

Versatility: Applications

It’s a versatile nailer that can be used for multiple purposes. The manufacturer recommends the following applications:

  • Asphalt Roofing Installation
  • Insulation Boards Installation

Lubrication: Increase the Longevity and Performance

To ensure the best performance and that the parts will not wear too early, the nailer should be properly lubricated. You can use any oil for pneumatic tools, and just put some drops before each use.

Quick Firing Mode

The fastest way to drive nails and get the job done quicker is to use the contact mode also known as bump mode.

This Hitachi NV45AB2 roofing nailer comes with the Contact mode that works like this:

  1. Hold down the trigger.
  2. Bump the nailer’s tip against the work surface.
  3. Done, a nail is set.

Basically, all you need to do is hold the trigger, and every time the tip of the tool touches the work surface it will drive a nail.

Check Price on Amazon

Leave a Comment

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Scroll to Top