QA

How To Install T1 11 Siding

How do I install T1-11 siding myself?

Should I nail or screw T1-11 siding?

T1-11 siding is designed for installation on framing with standard 16-inch spacing. You can attach them with exterior screws or galvanized nails. Wrap the house with house wrap or 15 mil tarpaper.

Do you need plywood under T1-11 siding?

It is best to check the local building code to determine if plywood sheathing is required. Even though it may not be considered necessary, many builders feel it is best to use plywood under T1 siding if the structure will be used for human habitation.

What goes under T1-11 siding?

You should put sheeting and house wrap under the T1-11 siding, just like with any other siding. In some areas, you don’t have to use sheeting and house wrap to do the installation, but I would not recommend doing it that way.

Do you caulk between T1-11 siding?

The top T-111 panel should be installed about 1/4 inch off the shelf formed by the flashing to prevent moisture from wicking up into the wood. This is especially important when using engineered siding. If the siding was installed with Z-flashing, do not caulk in the grooves.

How do you seal the bottom of T1-11 siding?

Trim the siding with one-by-four-inch wooden trim, covering the gaps around windows and doors, under the soffit and on the corners of the house. Nail the trim with two-inch galvanized nails, then caulk around it with acrylic latex caulk.

What size nails do you use for T1-11 siding?

Nail size depends on the thickness of the T1-11. In general, 6d nails are suitable for siding below 1/2-inch thick and 8d nails for thicker material.

Can I use screws for wood siding?

Although ring-shank siding nails are suitable for wood siding installation, screws have better holding power over time. Stainless steel is strongly recommended for all woods and required for modified woods such as Accoya and Kebony.

How much does it cost to install T1-11 siding?

The average cost to install T1-11 plywood siding ranges between $1,500 and $3,700, with an average of $2,500 for 500 square feet of exterior wall space. For OSB siding, that cost stays in the same general range, but the average drops down to $2,200 for the same 500 square feet.

Can T1-11 be hung horizontally?

If you carefully read the instructions, you will not find any instructions that say it cannot be installed with the grooves horizontal. Rather, they only show it installed vertically.

Can I use roofing nails for T1-11 siding?

When it comes to the type of nails to use for siding, it’s best to stick with siding nails. Roofing nails, while they may be galvanized, are generally shorter in length and will not allow for the required 1-1/2 inch penetration into structural framing or wood structural panels and wood structural framing.

Do you nail T1-11 in the grooves?

T1-11’s grooves and shiplap edges run parallel to its 8-foot-long edge. The T1-11 siding’s 1-inch-wide, 1/4-inch-deep grooves are spaced 11 inches apart. Contractors nail T1-11 siding to a building’s exterior and usually protect its surface with paint.

Is it better to paint or stain T1-11 siding?

Plywood T1-11 accepts stain well and takes on a grainy appearance that blends well in rural surroundings. Staining T1-11 is less work than painting it — you may need only one coat — but prior cleaning of the substrate is even more important, because any dirt and discoloration shows through.

Can you use T1-11 without sheathing?

In some construction techniques the use of T1-11 can act as both a wall cladding and sheathing all in one. These panels need to be rated for structural use. This means if you removed the sheetrock and insulation you would see the house wrap. Not any sheathing.

Is T1-11 siding waterproof?

T1-11 siding is not waterproof because it is not treated with any resins and chemicals that repel moisture. T1-11 siding needs to be protected against the weather with primer, paint, or stain. You also need to caulk around doors, windows, joints, and nails to keep the water out.

Should you seal the bottom of siding?

DO NOT seal the bottom with any sort of impermeable caulking nor spray foam. The bottom should remain permeable so that if water gets behind your siding for whatever reason then it has an escape path.

What size nails do you use for siding?

Nail Length Ideally, you should space the nails so that each one penetrates a stud; 8d nails, which are 2 1/2-inches long, are suitable for most siding materials. It isn’t always possible to nail into studs, especially when you’re installing shake siding.

How can I make my T1-11 last longer?

Paint it: Apply two coats of paint to ensure a long-lasting finish. Consider using an airless sprayer or a roller to apply the paint. You may use an exterior acrylic paint or a more expensive elastomeric paint. Give the first coat enough time to dry before adding the second.

How do you install Z flashing on T1-11 siding?

Begin at either end of the wall and set the level middle section of the Z-flashing onto the top edge of the siding panel, with the wider flange upward and against the wall framing. Flush the end of the flashing length with the wall corner and secure the flashing to the framing with an 8d nail at each wall stud.

Can you put Hardie board over T1-11?

Tom: Yes. It’s a perfect application for it because T-111 is nothing more than a textured plywood, and a plywood makes a great sheathing. Get rid of the rot. Get some regular CDX plywood, the same thickness as your T-111, fill in the gaps, put the Tyvek on there, put the Hardie on there.