The MAXIMUM Pneumatic Roofing Nailer features a durable construction with a lightweight die-cast aluminum body, making it easy to handle for extended use. The ergonomic rubber grip helps reduce hand fatigue, providing comfort during long work sessions. Its nosepiece with carbide inserts ensures longer life and enhanced durability, making it an ideal tool for tackling roofing projects efficiently and effectively.

Toggle switch allows for either sequential or contact operation
Tool-free depth-of-drive adjustment
Skid-resistant pads/wear guards for safety and tool protection
Tool-free adjustable shingle guide allows for quick and consistent shingle spacing
Built-in magnet ensures the last nail is driven
Pre-installed 1/4" NPT plug for easy air hose hook up
Maximum pressure: 120 PSI
Magazine capacity: Up to 120 nails
Weight: 5 lb 15 oz (2.7. kg)

Part Number	CRN45MX
Tool Type	Roofing Nailer
Gauge	11 ga
Maximum Fastener Length (in)	1.77 in
Minimum Fastener Length (in)	0.75 in
Nail/Staple/Brad Capacity	120
Strip or Coil	Coil
Fastening Angle (degree)	15 °
Maximum Pressure (psi)	120 lb/in²
CFM @ 90 PSI	3 lb/in²

Required Air Flow (ft³/min)	3.00 ft³/min
Required Air Flow (m³/min)	0.09 m³/min
Air Inlet Size	1/4"
Suggested Air Hose Size	3/8"
Calibre (in)	0.00 in
Noise Level (dB)	92 dB
Primary Material	Aluminum
Primary Colour	Black
Advanced Features	No Advanced Features
Accessories List	Hard Case, Oil, Other
Number of Pieces	1
Certifications	No Certifications
Assembled Length (in)	11.73 in
Assembled Width (in)	4.88 in
Assembled Height (in)	10.59 in
Assembled Weight (lb)	5.95 lb

Warranty

This product carries a special warranty. Contact store for details.. This product is partially repairable. For details contact MAXIMUM Customer Support at 1-888-670-6682

User Manual

View user manuals and additional product information

Download

Online Ordering

Pick Up is free at most stores (some stores require a minimum order value before tax)
Shipping fee is based on size and weight of products and distance from address to store
Same-Day Delivery costs $9.99 per order
Online Ordering Information

Returns

Most products can be returned or exchanged at any Canadian Tire store within 90 days of purchase
Some products are non-refundable and non-exchangeable
The return policy outlined above may not apply to the product you are currently viewing. For complete details and eligibility, please refer to our Return Policy for exceptions.

	Only Show Differences	Currently Viewing Bostitch RN46-1 3/4-in Coil Lightweight Pneumatic Roofing Nailer $399.99	MAXIMUM 2-in-1 Lightweight Pneumatic Flooring Nailer $299.99	MAXIMUM 34D Lightweight Pneumatic Framing Nailer, 3-1/2-in $329.99	Bostitch Angle Coil Lightweight Pneumatic Nailer $479.99
Ratings
Tool Type	Roofing Nailer	Flooring Nailer	Framing Nailer	Framing Nailer
Gauge	15 ga	16 ga	15 ga	11 ga
Maximum Fastener Length (in)	1.75 in	1.97 in	3.54 in	3.25 in

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Review Highlights

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Reviews

Rating Snapshot

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16 reviews with 5 stars.

3 reviews with 4 stars.

3 reviews with 3 stars.

2 reviews with 2 stars.

4 reviews with 1 star.

Overall Rating

3.9

10 out of 14 (71%) reviewers recommend this product

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1 to 5 of 28 Reviews

1 – 5 of 28 Reviews

3 out of 5 stars.

Do the job for small jobs

Verified Purchaser

15 days ago

Had to upgrade for a different brand to get long term longivity. Good for small project but no replacment parts if something breaks.

Helpful?

1 out of 5 stars.

Maximum Roof nailer

27 days ago

Don't waste your time buying this pathetic excuse of a roofing gun. It broke in the first 3 hours of use. and when I went to get a refund they refused to give me my money back and only gave me in store credit.

No, I do not recommend this product.

Helpful?

Response from Canadian Tire:

22 days ago

Customer Service with AI Support

Thank you for providing your feedback regarding the MAXIMUM Coil Lightweight Pneumatic Roofing Nailer. I regret hearing about the inconvenience you've experienced. For additional information or support, you can also contact our call center at 1-888-670-6682.

5 out of 5 stars.

Great tool

Verified Purchaser

29 days ago

Did everything it needed to do. Have just redone our roof with 2200 square feet of shingles. About 6000 nails went through the gun with only one jam, which took just 10 seconds to remedy. Added bonus of the air coupling being the correct fitting right out of the box.

Helpful?

3 out of 5 stars.

Jams and Misfires

Verified Purchaser

a month ago

Gets the job done but frequent jams and misfires.

Helpful?

5 out of 5 stars.

Maximum Roofing Nailgun Outperforms

Verified Purchaser

a month ago

Better than expected

Helpful?

1 – 5 of 28 Reviews

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Questions

1 - 5 of 5 Questions

Q: Can this roofing nail gun be used for siding?

2 years ago

1 Answer

A: I attempted to use this nailer to put on siding, when backed right off the depth was good but I had difficulty lining up with the notch in the siding. With practice it could be possible and far faster but at the cost of possibly damaging some siding.

2 years ago

Helpful?

Q: It's mentioned that there is a special warranty for this nailer. What kind of warranty is that or what does that covers. Thanks.

2 years ago

1 Answer

A: Thanks for reaching out! The Special Warranty can be found on the last four pages of this product's manual. It would be referring to the "90-Day Satisfaction Guarantee", "1-Year Repair Warranty" and "5-Year Limited Warranty". Depending on which stage you might fall under, you'd be able to contact your local Canadian Tire for more information on how to proceed.

2 years ago

Helpful?

Q: Does this work with any standard coil roofing nails?

5 years ago

1 Answer

A: Yes. The standard coil roofing nails should be 15 degree, 0.12'' shank diameter nails. And our tool uses nails in lengths of 3/4'' - 1-3/4''

5 years ago

Helpful?

Q: How much air is required to drive this nailer ?

5 years ago

1 Answer

A: The recommended operating pressure is 70-120 PSI (4.8-8.3 bar). The Average Air Consumption is 0.05 CF/Cycle @ 90 PSI.

5 years ago

Helpful?

Q: There is another trigger with this nailer & it"s different form the one on it, but nothing in the owners manual to say what it is used for.

6 years ago

1 Answer

A: The secondary trigger is utilized to change the firing modes for this product to bump to sequential (single shot) firing mode. Please see attached instructions for how to change triggers. Please note for newer versions of this nailer you no longer require to manually change triggers. Instead the mode is changed via a toggle switch built into the unit.

6 years ago

Helpful?

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