Building a three story extension to my home of about 900 sq ft 1.5". thick outer insulation works great. Insulation and in studs. Tried originally with plastic nails. NOT. Plastic holds nails too loose and although this gun is designed for plastic it is tied too tightly and the plastic strip sucks as the nails are held too loose. Use spiral nails welded with wire, which are far superior to plastic nails. Yes, this gun costs $300, but if you're climbing ladders/scaffolding to drive nails, you'll appreciate the time savings and ease, plus the added weight to your job. ms for that manly look. Also, once you're done, you can always sell it on Craigslist/Ebay if you no longer need it. Buy this babe! A NOTICE. This weapon comes standard with a single-stage "bump action". . This means that if you hold the trigger, the gun will fire when the contact tip is pressed against EVERYTHING including your foot, hand, dog, etc. It comes with a separate trigger that you will need to install yourself if You two more want safe. turn-based fire sequence.