T-111 siding is untreated. The paint covering the siding is the only protection the siding has from moisture intrusion. Even the most well painted siding can become damaged by moisture. Replacing the T-111 siding on your house is a major project that is best broken down into sections. Houses with T-111 rarely have sheathing under the siding and when you remove the T-111, the studs and wall insulation will be exposed. Therefore, the T-111 siding you remove needs to be replaced the same day to avoid disruption of the insulation or water damage to the wood studs and sub-floor.
Things You'll Need
2 inch by 1 inch trim, 10 foot long
Four foot level
3/8th inch drill bit
8d (penny) nails
Remove all the trim from the wall having the siding replaced. Wedge the pry bar under the trim. Pry away from the wall to lift the trim and loosen the nails holding the trim in place. Work the pry bar along the entire length of trim.
Inspect the installation of the windows. If the windows are mounted on top of the T-111, you will need to remove the windows before proceeding.
Determine the lap of the siding. Siding is installed in one direction. The last piece of siding installed will have an outside lap. This is the first piece of siding that you need to remove. Work the pry bar under the siding at the outside corner. Pry away from the wall. Work your way along the vertical length of the siding. When the corner is free, pull the siding away from the house, removing nails as necessary.
Apply the vapor barrier to the studs. Staple the vapor barrier to each stub to hold it in place. Remove the vapor barrier from window and door openings. Staple the cut ends to the framing studs located around the window or door openings.
Measure, layout, and cut the first piece of T-111 siding. Nail the T-111 siding to the wall. Start the first nail 2 inches from the edge of the siding and then place the nails 12 inches apart.
Layout holes that you encounter on the T-111 siding. Measure the hole from the edge of the last installed sheet of siding. Keep in mind that each panel of siding has an overlap. Transfer the measurements from the wall to the backside of the siding, subtracting the overlap from the measurement.
Drill a 3/8th inch hole at two opposing corners of the hole that you need to cut from the T-111 siding. Insert the jigsaw blade into the 3/8th inch hole. Cut one line and return to the 3/8th inch hole and cut the line perpendicular to the last cut line. Perform the same steps on the opposing corner.
Reinstall the trim on the wall after all the T-111 siding is installed. Caulk the trim. Do not caulk the corner trim to the T-111 siding that has yet to be replaced. Prime and paint the siding after the caulk has cured.
Wear safety glasses while replacing T-111 siding. Your eyes are irreplaceable.