How it is made:
T 111 is made from engineered wood (wood products and other materials pressed together), and is a type of plywood siding that comes as T 111 wood siding, or T 111 cedar siding. These panels can be made to look like tradition clapboards. Since the grain of the siding is fairly uniform, this wood won’t look completely like real wood siding. However, this will still have a more natural look than vinyl, aluminum or steel. Because of the fact that it is “plywood”, as well as having problems with weather proofing, it is no longer a popular choice for homes like is once was. However, this is a great option for sheds. It is fast and easy to install, and very cost efficient. If taken care of, this siding holds up great for the purpose needed. Just remember: when installing T 111 siding, make sure it is sealed against the weather, otherwise you will have a higher chance of dealing with the problems of delaminating.
The most common areas for T1-11 to fail are the vertical seams where the sheets meet and the top and bottom edges where they usually don’t get primed and painted.
A mirror can be helpful for inspecting the bottom edge of the panels for the beginnings of delamination, mold or rot.