The Bostitch RN46-1 is a pneumatic coil roofing nailer designed for fastening asphalt shingles and other roofing materials. Its compact, purpose-built design can make repetitive nailing faster than hand-driving nails, but the tool performs best when paired with the correct fasteners, air supply, and depth setting. This guide explains the RN46-1’s common features, how to prepare it for use, what to check before buying a used unit, and how to troubleshoot basic problems safely.
What Is the Bostitch RN46-1?
The Bostitch RN46-1 is a compressed-air roofing nailer that drives coil nails. It is intended for roofing tasks such as fastening shingles, roofing felt, and certain other materials when the fastener and substrate are appropriate. It is not a general-purpose framing nailer: its magazine, nose, and depth adjustment are designed around roofing work.
Model details can vary by product revision, market, or replacement parts. Many RN46-1 listings describe a 15-degree coil nailer with a magazine capacity of about 120 nails and a supported nail-length range commonly listed as 3/4 inch to 1-3/4 inches. Treat those figures as a starting point, not a substitute for the markings on the tool or its official manual. Check the model label and manual before loading nails or connecting air.
Bostitch RN46-1 Specifications and Features
The RN46-1’s main advantage is its roofing-specific design. A coil magazine holds more fasteners than a small strip magazine, reducing reload interruptions during repeated shingle installation. The tool’s nose and guide help position nails consistently, while an adjustable depth control helps the operator set the nail head flush with the roofing material.
| Item | What to know |
|---|---|
| Tool type | Pneumatic coil roofing nailer |
| Commonly listed nail angle | 15 degrees; confirm compatibility with the tool label and manual |
| Commonly listed nail length | 3/4 inch to 1-3/4 inches; verify the permitted range for the specific unit |
| Magazine capacity | Often listed at approximately 120 nails; actual loading depends on nail size and coil |
| Air supply | Requires a compressor, air hose, and pressure within the manual’s specified range |
| Typical adjustments | Depth control and, on applicable versions, a shingle guide |
Product listings commonly give an operating-pressure range around 70 to 120 psi, but the correct setting depends on the RN46-1 revision, nail, material, hose, and compressor. The pressure shown on a compressor is not automatically the pressure delivered at the tool. Use the manual’s recommended range and adjust gradually while testing on scrap material.
Some sellers describe features such as a lightweight housing, tool-free shingle spacing guide, or selectable firing modes. Those details should be confirmed against the exact model and configuration. A used nailer may have replacement parts or missing accessories, and a listing may combine information from a related Bostitch model.
Choosing Compatible Roofing Nails
Compatibility depends on more than nail length. The nail must match the tool’s specified collation angle, coil format, shank diameter, head style, and permitted length. Roofing nails generally have large heads to help hold shingles in place, but an incorrect coil or nail can jam, feed poorly, or create an unreliable fastening.
Before purchasing fasteners, check the RN46-1 manual or tool markings and compare them with the nail manufacturer’s packaging. Do not assume that every 15-degree coil fits simply because the angle is the same. The coil’s wire or plastic collation and the nail’s dimensions also matter.
- Use roofing nails approved for the material and installation conditions.
- Confirm nail length against the tool’s range and the roofing product instructions.
- Choose corrosion-resistant fasteners suitable for the roof environment and local requirements.
- Do not mix different nail types or damaged coils in the magazine.
Shingle manufacturers specify fastening patterns, nail placement, and minimum penetration requirements. Those instructions, local building codes, and applicable roofing standards take priority over a general tool guide. A nail that is too short may not secure the roofing assembly properly; one that is too long may create problems beneath the roof deck.
How to Set Up the RN46-1
Setup begins with a safe tool and a suitable air system. Read the manufacturer’s manual for the specific nailer, and inspect the tool before each use. The trigger, nose, magazine, air fitting, and housing should be free of damage. If a safety component is missing, sticking, or altered, take the nailer out of service until it is repaired by a qualified technician.
- Disconnect the air hose. Never load, unload, clear, or adjust the nailer while it is connected to compressed air.
- Inspect the fasteners. Confirm the nail coil is undamaged and matches the tool’s requirements.
- Load the magazine. Follow the manual’s loading sequence, making sure the coil and first nail are correctly positioned.
- Connect the air supply. Use a compatible hose and fittings, and set pressure within the manual’s stated range.
- Test on scrap. Drive several nails into representative material, then adjust depth or pressure in small increments as needed.
For roofing work, the goal is generally a nail head seated flush with the shingle surface without cutting through or crushing the shingle. A nail driven too deeply can weaken the hold; a nail left proud can interfere with the next course or compromise the installation. The appropriate result depends on the roofing system’s instructions.
Safe Operating Practices
A pneumatic nailer can cause serious injury if it is mishandled. Wear eye protection, keep hands and other body parts away from the nose, and never point the tool at anyone. Use hearing protection where noise levels warrant it. On a roof, fall protection and safe access matter as much as nailer handling; follow workplace rules and applicable safety requirements.
Keep the tool pointed away from the body while connecting air. Do not carry it by the hose, pull the trigger while repositioning, or bypass a contact safety. Disconnect the hose before clearing a jam, leaving the work area, performing maintenance, or handing the tool to another person. Follow the manual’s instructions for the correct trigger mode and firing technique.
Roofing surfaces may be uneven, sloped, hot, wet, or dusty. Maintain stable footing and avoid placing the nailer where it could slide or fall. Never use a nailer on a ladder or roof if the operator cannot maintain control of the tool and work position. A compressor and hose should be arranged to reduce trip hazards and prevent the hose from catching on roof edges.
Depth Adjustment and Nailing Quality
The depth setting should be checked whenever the material changes, the air pressure changes, or the tool begins producing inconsistent results. Start with a conservative setting and test on scrap that resembles the roof deck and shingle combination. Change one variable at a time so the cause of any improvement is clear.
Common signs of incorrect depth include nail heads standing above the shingle, heads breaking through the shingle surface, or inconsistent seating across the test area. Possible causes include a poor depth setting, pressure outside the recommended range, an unsuitable hose or compressor, worn parts, or fasteners that do not match the nailer. A nailer adjustment cannot correct a faulty installation pattern; follow the roofing manufacturer’s placement instructions.
Maintenance for Longer Tool Life
Regular maintenance helps the RN46-1 feed nails reliably and reduces premature wear. Disconnect the air supply before cleaning, inspecting, or servicing the tool. Wipe away roofing dust and debris, especially around the nose, magazine, and moving parts. Do not use a cleaning method or solvent that could damage seals or plastic components.
Some pneumatic tools require a small amount of air-tool oil, while others may use different lubrication instructions. Follow the RN46-1 manual rather than applying oil by habit. Excess oil can contaminate work surfaces or contribute to residue, and the wrong lubricant may harm internal seals. If the manual calls for lubrication, use the specified product and amount.
- Check the air hose, couplers, and fittings for leaks or damage.
- Keep the magazine free of debris and inspect the nail-feed components.
- Look for loose screws, cracks, or damage to the nose and housing.
- Store the nailer in a dry, protected place after disconnecting it from air.
- Arrange professional service if the trigger, safety, or internal mechanism malfunctions.
Troubleshooting Common RN46-1 Problems
The nailer does not fire
First confirm the compressor is running and the hose connection is secure. Check that the pressure is within the manufacturer’s recommended range and that the magazine is loaded correctly. If air reaches the tool but it still will not fire, disconnect the hose and inspect for a jam or obvious damage. Do not dismantle the tool unless the manual identifies the procedure as user serviceable.
Nails are not feeding or the tool jams
Incorrect nails, a damaged coil, debris in the magazine, or improper loading can interrupt feeding. Disconnect the air hose before inspecting the magazine or removing a jam. Use only compatible fasteners, and follow the manual’s jam-clearing steps. Repeated jams may indicate worn feed components or a repair issue.
Nails are too deep or too shallow
Test on scrap, then check the depth adjustment and delivered air pressure. A long, narrow, or undersized hose can contribute to pressure loss, especially during repeated firing. Also verify that the nail length and material are appropriate. If adjustments do not produce consistent results, the tool may need inspection.
Air leaks or weak performance
Listen for leakage at the fitting or housing, and check the hose and couplers for damage. Disconnect the air supply before examining connections. A persistent leak inside the tool can point to worn seals or other internal wear. Do not continue using a nailer that leaks significantly, cycles unpredictably, or fails to operate safely.
Buying a Bostitch RN46-1: New, Used, or Replacement
Availability and condition can vary because older pneumatic tools may be sold through online marketplaces, tool suppliers, or used-equipment dealers. Before buying, confirm the model number on the tool itself; seller titles and photos can be inaccurate. Ask whether the nailer has been tested under air, whether it leaks, and whether the safety and depth adjustments function correctly.
For a used unit, inspect the magazine, nose, trigger, air inlet, and housing for damage or signs of unapproved modification. Ask about the manual, service history, and included accessories. Check that parts and service are available before purchase, particularly if the tool is discontinued or has been stored for years.
Compare the total cost, not just the listing price. A low-priced nailer may need seals, a new safety component, or other repairs. Confirm that replacement parts are compatible with the exact RN46-1 version, and have a qualified repair shop inspect any tool with uncertain operating history.
RN46-1 Compared With Other Roofing Nailers
The RN46-1 may suit work that benefits from a coil magazine and a dedicated roofing nose. Other roofing nailers can differ in weight, nail compatibility, magazine capacity, trigger options, and availability of service parts. These differences affect comfort and productivity, but they do not replace the need to match the fastener to the roofing assembly.
When comparing models, check the manufacturer’s current documentation for supported nail specifications, operating pressure, weight, adjustment options, and safety features. Confirm whether the tool uses the fasteners already available to the crew. For occasional repairs, service condition and ease of obtaining compatible nails may matter more than maximum magazine capacity.
Frequently Asked Questions
What nails does the Bostitch RN46-1 use?
It is commonly described as a 15-degree coil roofing nailer, with listings often specifying nails from 3/4 inch to 1-3/4 inches. The exact collation, nail dimensions, and approved range must be confirmed in the manual or on the tool label.
What air pressure does the RN46-1 need?
Many listings cite a range around 70 to 120 psi, but the manual for the specific unit is the authoritative source. Begin at the recommended setting and adjust only as needed after testing on scrap.
Can the RN46-1 drive framing nails?
No. It is a roofing nailer made for compatible coil roofing nails. Framing nails have different dimensions and collation and should not be used unless the manufacturer explicitly specifies compatibility.
Why are the nails not sitting flush?
Check depth adjustment, air pressure at the tool, hose capacity, nail compatibility, and material thickness. Test on scrap before returning to the roof. If the result remains inconsistent, stop using the nailer and arrange service.
Key Takeaways
- The Bostitch RN46-1 is a pneumatic coil roofing nailer, not a general-purpose framing nailer.
- Verify nail angle, coil type, dimensions, and length against the exact tool manual.
- Set air pressure and nail depth through careful testing on representative scrap.
- Disconnect the air hose before loading, clearing jams, adjusting, or servicing the tool.
- Inspect used tools and confirm parts availability before purchasing.