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Unless the gypsum board is attached directly to the underside of the roof sheathing, it is not a roofing nail. If the gypsum board is attached directly to the underside of the roof sheathing, then there are larger quality of construction issues than a protruding nail.


7

Looks to me like a drywall screw or nail has "bubbled out". It happens sometimes due to wall movement, especially with weather swings (like a real wet winter or a long drought). It also happens when moisture gets to a nail or screw and causes it to corrode. Hopefully your kinda new roof is not leaking. I don't see any signs of plaster discoloration ...


1

Treat it like you would ammunition. If there's no corrosion, they're probably fine. If you start using it and you get misfires, dispose of it.


1

While their power may be degraded, using them is not likely to be dangerous. The barrel of the nail gun is what really contains the blast.


0

The "mysteriously gigantic" nailers are probably 15 gauge trim nailers similar to this one: Sounds like the one that you have is a finish nailer, and is likely a smaller gauge and uses nails with smaller heads. Thus less driving power required and a smaller gun. A trim nailer will generally give you better holding power, but also higher possibility of ...


0

The trunking is fairly rigid and can be put in most locations without gluing it to the wall or wallpaper. It merely serves to cover and contain the wires which are already safely covered. You could cut the trunking to fit the run you want, enclose the wires and then use simple wire loops around the trunking in two or three places, held close to the wall ...



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