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Western Red Cedar Siding & Trim

Experience the timeless beauty of real cedar siding & trim.  Cedar is the perfect partner for stone, slate, brick, and other natural building materials.  No other building material reflects such a true embodiment of the natural environment. 

Cedar is well recognized as a structural material with known mechanical and physical properties.  For structures such as large buildings in which the strength, stability and the appearance of exposed wood elements are of equal importance cedar offers long term durability and performance.

Thermal and Insulating Properties
Western Red Cedar has good insulation value because of its low wood density and grainy texture. It is the best insulator among common available softwood species.


When finished properly, cedar siding will provide years of excellent performance with minimal effort; however, when neglected or finished improperly it can lead to unnecessary maintenance.  The decision of how to finish your Western Red Cedar siding is a critical consideration.  You can retain the natural beauty of the wood or choose to pre-finish to a color of choice.

The natural look.  Penetrating oil-based products containing pigments are recommended for Western Red Cedar.  Pigments provide UV protection.  When selecting a transparent finish coat, make sure it contains a water repellent, fungicide, mildewcide and protection against ultra violet (UV) light.

Semi-transparent and solid stains are also good options for siding and trim.  Always use an Alkyd Oil base and Stain Blocking Primer, not shellac based. Top Coats should always be 100% Acrylic stain or paint.


  • Store product under cover until ready to use
  • Acclimatize siding before installation
  • Prime all six surfaces of your siding before installing.
  • Pre-finish your cedar siding whenever possible.
  • Coat all end cuts during installation.
  • Follow WRCLA installation instructions.

Coverage of Western Red Cedar Siding

To obtain the coverage of a specified width of siding from Table below, perform the following calculations:

  1. Calculate total wall area (length x height).
  2. Subtract square footage of openings (windows, doors) to determine wall area for siding.
  3. Add 10% for trim.
  4. Multiply figure by the appropriate factor from the table for linear or board feet.


  • Length x height = 160 square feet
  • Door = 20 square feet    Window = 20 square feet   Area for siding = 120 square feet
  • Add 10% for trim = 120 + 12 = 132 square feet
  • Assuming 6 inch siding    132 x 2.67 = 357.4 linear feet    132 x 1.33 = 175.6 board feet
Siding Type Nominal Width
Dressed Width
Exposed Face Width
Linear Feet Factor Board Feet Factor
Bevel Siding1 4 4.8 1.6
6 2.67 1.33
8 1.85 1.23
10 1.41 1.18
12 11½ 10½ 1.14 1.14
Tongue and Groove Siding 4 03-03-08 3 4 1.33
6 05-03-08 5 2.4 1.2
8 07-03-08 1.77 1.19
Channel Siding 6 2.53 1.27
8 07-03-08 06-05-08 1.81 1.21
10 09-03-08 08-05-08 1.39 1.16
Board-and-Batten Siding 2 01-09-16 varies with width of board see footnote 2
4 03-09-16
6 05-09-16
8 07-03-08
10 09-03-08
12 11-03-08


  1. Assuming minimum 1″ overlaps. Larger overlaps can be used, particularly on wider sidings such as 10″ and 12″ pieces.
  2. Linear Feet Factor = Exposed Face Width/12.
    Board Feet Factor = Nominal Width/Exposed Face Width.

General Information