If it s narrower it might all be blind nailed.
How to remove siding from the bottom.
Even if the roof has been properly flashed against the sidewall this one hasn t water can still run down the side of the house and behind the siding causing rot.
You should be able to slide it horizontally and remove it from the channel to expose the nails from the second row down.
The nails for the first course will be accessible now.
Work from the bottom up so that the piece does not.
You don t mention what size of siding you have.
Cutting the nails will let you remove rotted boards without damaging those your e saving.
Reveal the nails anchoring a piece to the wall by sticking the zip tool under the bottom of the piece above it.
To get at the nails carefully wedge out the bottom of the siding 1 8 to 3 16 in.
Start by lifting an overlapped piece of vinyl on the top row.
The channels around windows and the bottom of the wall secure the edges and bottom row into position.
Use a cat s paw or other small pry bar to pull the nails from the course you need to remove.
Remove the nails and the piece of siding.
I ve got a recip saw and a multitool so between those two i should be able to get the old siding down without having to use the pry bar too much.
You will actually start by pulling the bottom of the second course out of the top of the first course.
Cut the nails at the bottom of the row above the boards you re replacing.
Insert the siding removal tool where the panels overlap and pull down and out.
Use a zip tool to disconnect two pieces of siding.
If it is 12 masonite it is going to be nailed near the bottom of the siding anyway.
Use a small hacksaw with a sharp blade.
Hold the siding piece that is not being removed gently with the back of your arm while removing nails with the pronged end of a cat s paw bar.
The solution to rotting sidewalls is a small piece of bent metal called a kickout flashing at roofing suppliers which simply directs all that water away from the wall.
Pull the piece of vinyl siding downward to disengage it from the course below it.
To remove a piece at your eye level slide the zip tool under the piece above that one.