T1-11 is made in various forms by numerous companies. One type is made wit h a paper covered OSB. It needs to be thoroughly sealed or it won't last. Another type is made with paper covered hardboard. It will swell at every spot a nail pierces. The best one is described as "all wood". It needs n o finish and will last indefinitely. By the way, T1-11 is not trademarked product name. It's merely the name used to describe a type of grooved sidi ng. It can be made by anyone and still be called T1-11.
Beware of glueing bad idea screws I recommend easy removal, T1-11 siding is okay if proper installation is done, anymore people are switching to Stuco pre colored zero maintenance compared to wood products. Depending on you climate zone Hot summer and Freezing winters T1-11 is known for its Expansion and retraction to seasons.
Screws are a bad idea. They rust and are a pain to removed once rusted.... ask me how I know. I used screws on T1-11 for my garage siding and on the shop, has held up well, though small areas on the garage has needed replacing in the past 30 yrs. No problems yet on the shop (11 yrs). I thought ahead, installing a 20" or so skirt nearer to the ground, assuming the bottom edge would suffer the most from weather, weed eating and the like. If damaged, I only need to replace a skirt section, not mess with a whole sheet. I primed and painted front and back of the skirts. Above the skirt I installed a drip edge, then full sheets above that. Primed and painted the bottom edge and the bottom 1' of the back sides of the full sheets before installing.... just in case, didn't want any wetness to wick up that back side on any bare wood, should moisture get back there. Behind the sheeting I installed felt.
Use just smooth galvanized nails, not ring shank. Ring shanks are hard to pull out, often times.
On my, rebuilt in place wood garage door, I use all stainless screws with torx heads. I had 20 year old door to repair that was using deck screws. I used a hole saw to drill around the deck screws and just lifted the old rotted plywood sheeting off. Installed new exterior grade plywood one pane at a time to maintain squareness of the 18 foot door using SS screws. Worked perfectly and now I have a new door. (Kept the framing as it was in perfect condition, only the plywood panels were rotted).
S>>> That is a very interesting answer, well worth the 14 years we waited for > it.
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