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But there no problems with it. I am not a roofer, just a weekend guy who fixes stuff around the house. Twice it shot two nails at once but it was because I did not have the nailer level; so make sure you rest the nailer on the guide. I used the Hitachi nailer to do a garage roof. It worked great.
Sequential firing with the bump fire trigger takes some getting used too: double-fires are most common when attempting seq. Coil changes are fast and simple, as is adjusting the floor late for different size nails. Depth of drive is easily adjusted and consistent, whether being slammed against the decking by a green laborer or the being skimmed across the shingle with the feather-light taps of a seasoned roofer. firing against material that bounces back. I've probably roofed about 400 squares with this so far without a hitch. I'm a single family home build and remodel contractor.
It fires off nails as quickly as I can tap them out with the only 'jams' occurring due to misshapen coils of nails. The last nail of the coil drops out the nose. Previous to purchasing this nailer, I've used the old side-loading Bostitch roofers, the new senco roofers, and a couple off-brand cast iron units. There was a rubber bumper on the front of the drive head area whose adhesive gave out after a few months - it didn't concern me, but I can see its usefulness when lowering the gun down from the roof deck by the hose. I wish Hitachi had integrated an adjustable exhaust port, but in the end, I reach for this nailer before any of the others. The Hitachi exhibits the best and most reliable performance of any roofing nailer I've used.
It has no problem piercing sheet metals such as flashing or steel J-channel, and performs remarkably well at off-angles such as those under soffits.
Light weight, and didn't jam once. I researched for months to find the best nailer for a DIY roofer. This nailer worked like a gem.
Around 5000 1 1/4" nails without one hiccup. Roofing nailers are one tool I don't have a lot of experience with. I wish Hitachi would include a molded case for their larger nailers but I wouldn't purchase any other brand regardless. To date I have not had a single problem; just oil and go.can't ask for anything more. All my other nailers are Hitachi, and based on reviews and price I bought this one with confidence. I put it to work on a small roof the day it arrived.
Works good on asphalt singles, but if you try to use it on hardiplank boards, it is hit or miss.
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