Fiber cement siding is a composite of portland cement silica and wood fibers so it should last much longer than real wood.
Replace wood siding on garage.
You can use a tape measure to mark the reveal of each piece of replacement siding or make a spacer gauge from two blocks of wood screwed together.
That s because the end seams on wood lap siding are staggered across the wall and have to be made at wall stud locations.
Protect sound siding with a scrap piece of 1 4 in.
Tap flat bar under siding to loosen nails.
In most cases it s necessary to remove more than just the damaged wood to make the repair less obvious.
To learn how to repair wood siding remove rotted boards with a flat pry bar.
Sometimes you may just want to convert to siding which requires less maintenance like vinyl.
After you remove the rotted courses use a small hacksaw to cut any protruding nail shanks or if you have a very strong grip use a good pair of wire cutters.
Pull loose nails from clapboard siding.
Cut flashing to keep moisture from seeping behind the trim.
Secure old siding by driving ring shank nails down at an angle through the old nail holes.
Snap a chalk line as a reference point for the transition board also known as a freize board.
In this video this old house general contractor tom silva explains how to repair clapboards.
If your home has wood siding examine the siding around and beneath.
To install the replacement siding start at the bottom and work your way up.
Sometimes you have to replace siding because the old wood has rotted or become unsightly.
Besides prying out the rotten wood you may need to cut adjacent boards back a stud or two in either direction.
You can use plenty of materials for that.
Overlap the boards so each row of new siding has the same reveal as the old siding.
Pressured treated wood cedar corrugated metal or plastic a length of concrete siding and probably more.
The cost to repair the damage or in other words replace the rotted wood can run in the tens of thousands of dollars.
Lots of great answers above but the best one is to sheer off the siding above the rot line and replace the lower section with something that doesn t rot.