Here are several common reasons for damage.
Repair rot siding.
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.
Pressured treated wood cedar corrugated metal or plastic a length of concrete siding and probably more.
Borate is a wood preservative and it can be drilled halfway into the wood to be sealed over with epoxy.
The intersection between a roof and a sidewall can be a rot problem waiting to happen.
Paint can hide wood rot so poke the siding with the tip of the screwdriver.
Fixing decayed rotted wood using an epoxy penetrant and filler.
You can use plenty of materials for that.
Pests such as termites rodents and other animals.
If you find a small portion of rotting wood you can prevent it from affecting the entire wood siding.
You simply have to remove the damage section and fill in that particular area.
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.
Protect sound siding with a scrap piece of 1 4 in.
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.
Like the other two steps get rid of any rotted siding either with a chisel saw or hammer pry bar and inject borate into the hole.
Wood siding is susceptible to rot mold warping and mildew in different ways.
Our house had extensive dry rot in the bottom 3 4 of the house when we were buying it.
Repair rotted wood siding with epoxy.
Pry off the rotted boards.
If your home has wood siding examine the siding around and beneath the windows for signs of swelling or discoloration.
Instead of replacing the entire siding the sellers basically did what you did but used more of the t1 11 for the bottom portion instead of using the board along the bottom obviously that wouldn t have been long enough.
When you come across rotted wood in your old house projects instead of replacing the damaged wood you also can repair it with specialty epoxy penetrants also called consolidants and fillers to make repairs.
Missing ring shank nails that popped out due to age or movement.
When rot afflicts a relatively confined area filling the damage with two part epoxy resin is a smart option that yields a seamless repair and doesn t require a lot of experience.
Borate basically seeps into the wood and will minimize rot decay in the.
To learn how to repair wood siding remove rotted boards with a flat pry bar.