T1-11, sometimes noted as T111 or T1, is an example of one of many such wood siding products. The ‘T’ in T1 stands for “textured,” which references the grooves or channels cut into the siding.

Does T1-11 siding need Tyvek?

Do I Need Tyvek Under T1-11 Siding? T1-11 is both a siding and a sheathing and can be fastened directly to the exterior face of the studs. House wrap like Tyvek or tar paper provides a wind and moisture barrier which can be beneficial depending on the purpose of the structure it is used on.

Is T1-11 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.

What is T1-11 siding used for?

Plywood T1-11 is also known simply as plywood siding. A versatile material, it can be stained to simulate a natural wood look, or it can be primed and painted.

Can T1-11 get wet?

OSB T1-11 siding has more issues with water because of how it is manufactured. It is made with wood strands and flakes and is treated with a resin to bind it together when pressure is applied in the process. If the OSB T1-11 siding gets wet, it swells and expands, flaking, chipping and eventually will rot.

Is T1-11 treated?

T1-11 siding features narrow, evenly spaced grooves on a rough-finished board for a pastoral appearance. Pressure treated for above ground applications, T1-11 siding features grooves spaced either 4″ or 8″ on-center to provide options for achieving the look you desire for your home, shed or pump house.

Should you 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.

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

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. You can give the wood a certain amount of UV protection while allowing the grain to show by using a semi-transparent stain.

Does T1-11 warp?

Not fire resistant—The flammability of T1-11 ranks much higher than other siding materials like brick, stone, or fiber cement. Easily damaged—This siding tends to rot, warp, corrode, and mold when left untreated.

Does T1-11 need to be sealed?

It is sometimes called T1-11. Plywood should be treated or primed before installation to ensure it is completely protected from the elements. Sealing the material is a fairly straightforward job if the siding you purchase is not green.

What does a sheet of T1-11 cost?

The average cost of T1-11 siding is $2.25 per square foot to $6 per square foot for material costs.

Can T1-11 siding be installed horizontally?

Installing the siding with the grooves vertical or horizontal doesn’t matter with the inner plies plugged. Moisture cannot enter the siding. Btw, you must have maintained your siding by repainting on a regular (3-5 years) period. Otherwise, any siding would have deteriorated and started showing signs of rot.

What can I use instead of T1-11 siding?

It can stand up to harsh weather in any climate and resists damage from termites and fungal decay. How to Decide: If you want the most durable siding available, then LP wood siding is your better choice. If you want to sacrifice some durability for savings, then choose the plywood grade over the OSB T1-11.

Can you put vinyl siding over T1-11?

T-111 siding is a fine substrate to install vinyl siding over provided it is structurally sound and the manufacturers recommendations are followed. If the T-111 is 5/8 inch thick the vinyl siding can be nailed anywhere on the panels.