Just make sure whoever does this for you do a few things....
1) Manufacturer's instructions, (which supercede code) state plainly that the installer MUST use either 16D nails or 1/4"Lag screws. There are many companies installing these using drywall screws, gutter screws, etc. That is WRONG. The two main companies that make these ladders, Warner and Louisville both say this is important.
2) Make sure that the steps go up towards the peak of the home and not towards the side of the house. We often find these installed the wrong way, where when you climb up them you hit your head on the sharp roofing nails that come through the roof sheathing. This is dangerous.
We prefer the aluminum type over the wood type. Too often we see the bottom of the wood ones cut wrong....the aluminum ones are easier to install.
Sadly, we see more companies install these wrong than install these correctly. One of the companies around here who also is about the #1 company who does epoxy floors is one of the few who install them correctly. I would not name them out of respect of the vendor who has already posted here and like I, support this forum. As long as you hire someone who complies with the issues I've just posted above, you will be fine.
Hope this helps!
Frank D'Angelo
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Florida licensed Home Inspector #HI688. (352) 250-7818
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