I will be doing some small framing additions and covering it with vinyl siding. I'd like to purchase a nail gun for doing this. Is there a nail gun that I could use for both applications or are they separate guns?
When you nail vinyl siding, you don't drive the nail all the way in. You leave a tiny space between the nail head and the vinyl so that the siding can slide left-right easily. If you fail to do this, the siding will make popping sounds and may warp when it is heated by sunlight.
There's no framing nail gun that can leave this small space consistently on small siding nails.
Perhaps the biggest thing is to figure out how you want to power it:
Battery powered tools have their limits, but those limits have been increasing. If you are already in a particular branded ecosystem (Ryobi, Dewalt, Milwaukee, etc.) then look at what that brand offers. You don't want to end up with one tool that has a different battery from all your other tools.
- Plug-in Electric
Plenty of power. Only catch is if you are working on a new structure with no electric hooked up.
- Compressed Air
This is very common for nailers. But a lot of DIY (including myself) don't have a compressor, hoses, etc.
If the project is likely to take only one or two days, I would definitely consider rental of this type of tool, particularly if you want to go for air powered (rent the compressor and the tools).