DEWALT 20V Cordless Roofing Nailer
DEWALT 20V Cordless Wire Collated Roofing Nailer DCN45RNB Review
DEWALT 20V Cordless Wire Collated Roofing Nailer DCN45RNB
Model number: DCN45RNB
Power source: 20 volts
Motor size: Brushless
We’ve been using the DEWALT pneumatic nailer for a few years and like it, but we’re super happy to see a cordless solution.
The first impression on the DEWALT 20V 15° cordless coil roofing nailer is that it is heavier than its pneumatic older brother. It weighs 6.7 lbs. and has a fly-wheel wind-up and wind down sound. I was also impressed with how fast it was at installing nails, and unimpressed by its sharp recoil when fired. We’ll talk more about this later in the review.
The DEWALT 20V 15° cordless coil roofing nailer kind of looks like they reused the casing of the 18-gauge brad nailer. It does have DEWALT’s famously comfortable grip. DEWALT put a lot of time and effort in past years perfecting this grip, and it’s a winning design. The nailer’s nose is different from their pneumatic nailer – it has a square shape and we found it to have provided excellent stability and surface contact.
Powered by a brushless motor this battery-powered nailer can drive the full range of wire-collated roofing nails from 3/4 in. to 1-3/4 in. in bump mode.
The nailer has a tool-free nail tray that easily adjusts to accommodate different nail lengths and a tool-free depth adjustment wheel. The nail canister adjusts to allow 3 positions:
- ¾” nails
- 1” to 1-1/4” nails
- 1-1/2” to 1-3/4” nails
The DEWALT 20V Cordless Roofing Nailer canister housing and the cover are made of thin plastic and is not as rugged as the pneumatic nailer’s canister. Just moving the cordless nailer around on our shed roof project popped the coil housing open a few times. The thinner canister was probably a trade-off to cut weight off the already beefy nailer.
Additionally, the metal “nail door” clip is different from the pneumatic version. This new clip resembles a spring-loaded, slide-bolt which I would describe a sticky and sluggish to operate. It’s not a precisely machined fit.
Rate of Fire and Runtime
The DEWALT 20V 15° cordless coil roofing nailer fires up to 3 nails per second on a 2 Ah battery. It can install up to 500 nails per charge, or to put that into layman’s terms easily one square (100 sq.’) of asphalt roofing shingles per charge.
We installed 5 bundles of shingles on a single 2.0Ah battery. That’s over 100 shingles with 4 nails per sheet and then the ridge cap on the top.
There is NO dry-fire lockout on this tool.
DEWALT 20V Cordless Roofing Nailer Specifications
- Nail Capacity 120
- Height 5 IN
- Length 5 IN
- Weight 6.7 LBS
Depth of Drive
The depth adjustment wheel is top-mounted and is a turn-knob mechanism requiring your thumb and index finger to operate. We found it stiff to turn. There are five depth settings and we found that we needed to use the deepest setting to ensure nails installed flush.
The nailer has a tool stall-release lever to return the driver blade in the event of a jam. When this happens, it typically means that the nailer’s driver blade did not complete the drive cycle and is not reset. When this happens the jam /stall LED light will flash.
To clear a stall, you need to remove the battery [to reset it] and activate the stall release lever on top of the tool. The lever releases the driver blade and resets it for nailing.
Using the DEWALT 20V 15° Cordless Coil Roofing Nailer
We used this nailer on a shed roof installation shooting 1-1/4” nails and it’s super-fast for a cordless nailer. This roofing nailer has a sharp recoil, a lot more than I’d like to see on a roofing nailer.
We also experienced a fair share of driver blade jambs with this nailer.
Note – We were using the correct angle nails, a charged battery, and even replaced the coils to see if that would reduce the jambs, it did not.
We also tried to use the nailer to install Hardie siding over Advantec sheathing. The nailer did not have the power to install the nail into the Hardie siding and punched [recoiled] the nailer back toward us resulting in a half-driven nail.
Improvements to the DEWALT 20V Cordless Roofing Nailer
We’d like to see DEWALT Improve two things on this nailer:
- Reduce the weight
- Reduce the recoil
The DEWALT 20V Cordless Roofing Nailer sells online for $319.00
The speed of the gun is great but the weight is a factor. The DEWALT cordless coil roofing nailer is definitely designed for small, quick roofing repairs or jobs like this shed.
Larger jobs would require a pneumatic gun, but there isn’t a doubt in my mind that this nailer could tackle a full roof, it’s just too heavy and the recoil will fatigue you over time.
We can all agree that cordless nailers are convenient and ideal for service repairs and small jobs. The lack of hoses, compressor, or gas cartridges alone makes cordless nailers attractive.
Kudos to DEWALT for trail-blazing this nailer to the market.
DEWALT 20V Cordless Roofing Nailer Video Review
About the author
Product reviews on this site contain our opinion of a product or service. We will always strive for objectivity and transparency in our reviews. Our goal is to provide readers with honest, objective information based on our own experiences. We never have and never will accept payment in exchange for a positive review. Many of the products that we review are provided to us for free by a manufacturer or retailer. In some cases, we also have advertising or affiliate relationships with manufacturers and retailers of products and services we review. For additional information please visit our additional disclosure policies.