Because Specialty Wood Products utilizes some of the best custom mill shops in the country, our customers are provided with a great deal of flexibility when it comes to installing siding on the outside of their home, or custom paneling on the interior. While there are many standard patterns for milling, it should be noted that milling is by nature a “custom” process, so don’t’ be scared to ask about a pattern that may not be standard. Pieces of lumber that are not only surfaced, but also machined to produce a specific cross sectional shape are classified as pattern lumber. Examples of pattern lumber include decorative molding, tongue-and-groove flooring, shiplap, channel and log cabin siding.

SWP Milling Profiles

Some of the various “standard” milled patterns include:

  • TONGUE & GROOVE (T&G): T&G Siding is versatile. You can use it indoors or outdoors, rough side or smooth side, installed horizontally, vertically or diagonally, to provide distinctly different looks. The board edges are usually “beveled” but other styles that include flush-jointed, reveal and radius joints are also available. T&G siding has both a rough and smooth face and is graded to the rough face.
  • SHIPLAP: Shiplap Siding is a type of Drop Lap siding with tight joints similar to tongue and groove, but instead of a fitted groove it overlaps the next board usually by 1/2″ to 3/4″ . If you decide to install Shiplap siding vertically be sure to bevel cut the ends so water is directed to the outside.
  • BEVEL: Bevel siding is lumber board resawn at an angle to produce two pieces thicker on one edge than the other with a thick butt and a thin upper edge lapped to shed water. This pattern is special mill cut that allows the siding panels to fit together in such a way as to protect joints from water infiltration. It installs easily and gives an attractive shadow line.
  • CHANNEL: Channel Rustic Siding has 1/2” overlap and a 1” to 1 1/4″ reveal that creates a channel effect between boards. Channel Siding allows maximum dimensional wood change (breathing) in climates of highly variable moisture levels between seasons – without adversely affecting the appearance. Usually available smooth, rough or saw textured.
  • LOG CABIN SIDING: Log Cabin siding allows you to integrate the rustic charm of a log home with conventional frame construction. It looks exactly like a log but requires 75% less wood. The overlap ensures tight insulation against weather and eliminates the need for chinking between logs. The “reveal” pattern creates an attractive recessed effect between logs where you have a choice to create a chink effect with caulking if desired – but not required.

 

Grades-Western-Lumber


Siding/Paneling Coverage

Wood paneling is sold by the linear (or lineal) foot. Your quantity requirements are calculated by multiplying your square foot area by a linear factor based on the siding width. The Lineal Foot Factor is derived by dividing 12 inches by the individual pattern’s exposed face.

A) Calculate the square footage in walls: length x height = sq. ft.

B) Calculate, and then subtract, the square footage of openings

C) Add 10% to cover trim and waste

D) Multiply the result by the factor for lineal feet

 

T&G Siding Coverage
Nominal Width Dressed Width Exposed Face Linear Ft Factor*
6″ 5 7/16″ 5 1/16″ 2.37
8″ 7 1/8″ 6 3/4″ 1.78
10″ 9 1/8″ 8 3/4″ 1.37
* assuming 3/8″ board overlap
Shiplap Siding Coverage
Nominal Width Dressed Width Exposed Face Linear Ft Factor*
6″ 5 1/2″ 5″ 2.4
8″ 7 1/4″ 6 3/4″ 1.78
10″ 9 1/4″ 8 3/4″ 1.37
* assuming 1/2″ overlap
Bevel Thin Butt Coverage
Nominal Width Dressed Width Exposed Face Linear Ft Factor*
4″ 3 1/2″ 2 1/2″ 4.8
5″ 4 1/2″ 3 1/2″ 3.43
6″ 5 1/2″ 4 1/2″ 2.67
* assuming 1″ overlap
Bevel Thick Butt Coverage
Nominal Width Dressed Width Exposed Face Linear Ft Factor*
6″ 5 1/2″ 4 1/2″ 2.67
8″ 7 1/4″ 6 1/4″ 1.92
10″ 9 1/4″ 8 1/4″ 1.45
* assuming 1″ overlap
Channel Rustic Coverage
Nominal Width Dressed Width Exposed Face Linear Ft Factor*
6″ 5 3/8″ 4 7/8″ 2.47
8″ 7 1/8″ 6 5/8″ 1.81
10″ 9 1/8″ 8 5/8″ 1.39
* assuming 1/2″ overlap
QTR Log Siding Coverage
Nominal Width Dressed Width Exposed Face Linear FT Factor*
6″ 5-7/16″ 4 15/16″ 2.43
8″ 7-1/8″ 6 5/8″ 1.81
10″ 9-1/8″ 8 5/8″ 1.39
* assuming 1/2″ overlap
Coverage Example: If you are siding four walls 8 feet high by 40 feet long with 8″ wide siding and we allow 10% of the total square feet for openings, you would need approximately 2250-2450 linear feet depending on pattern selected:
* Lineal Foot Factor is derived by dividing 12” by the exposed face