Replacing T1-11 siding means removing the old grooved panels, checking and repairing whatever the panels were hiding, and installing new siding over a fresh water-resistive barrier with proper flashing. Installing T1-11 siding generally costs about $2.50 to $7.50 per square foot. A replacement project may cost more because removing the existing siding, disposing of it, … Read more
Many T1-11 repairs fail because the damaged wood was not completely removed or the newly exposed edges were not properly sealed. This guide walks the fix from the outside in: how to tell what you’re really dealing with, when a patch is honest and when you’re just hiding rot, and how to seal the repair … Read more
T1-11 is one of the cheapest ways to side a shed, garage, or house â and one of the easiest to ruin with a bad paint job. Get the prep right and paint can protect the panels and help them last longer. Rush it, and you may be scraping peeling paint out of the grooves … Read more
Quick answer: To install T1-11 siding, fasten a water-resistive barrier over the studs, set the first panel plumb with the grooved face out, and nail into every stud following the panel manufacturer’s fastening schedule and local code. Leave a gap between panels for expansion, seal all field-cut edges, and flash every horizontal joint. Get that sequence … Read more
Last updated: August 2026 Ask ten contractors how long T1-11 siding lasts and you’ll get answers ranging from “a lifetime” to “I’ve pulled panels that were rotting in a few years.” That spread is the whole point: the T1-11 siding lifespan isn’t set by the panel itself so much as by how it’s finished, where … Read more