The term pattern sidings describes a variety of siding products in which the board
has been machined on the edge(s) and face(s) to produce siding with interlocking or
overlapping joints and with smooth surfaced or rough sawn faces. These sidings fall
into two broad groups: tongue & groove or lap.
Tongue & Groove
Western Red Cedar tongue and groove is widely used for its good looks and versatility.
It can be installed horizontally, vertically or diagonally, each method giving a
distinctly different look. Tongue and groove siding is available with rough or smooth
faces. Both seasoned (kiln-dried) and unseasoned (green) sidings are available.
The joints between adjoining pieces are usually v-shaped or flush jointed, reveal and
radius joints are also available.The different joints and surface textures in tongue
and groove siding combine to provide a range of shadow line effects that enhance
the productís versatility.
Tongue and groove siding is manufactured in clear grades suitable for a more
formal, elegant appearance, particularly when pieces are smooth faced. Knotty
grades are in demand for their smart, casual look.
Typically when we think of Siding we think of exterior applications, but Tongue & Groove is used quite extensively indoors as well.
Tongue & Groove Patterns
Tongue & Groove comes in a wide variety of patterns. The most common are EV2S, EV1S and S2S. Other common descriptions are V2E (EV1S), V4E (EV2S) and Center Match (S2S).
T&G coverage is close to the nominal board width minus the actual "tongue" and "groove".