Home Sitemap Contact About WRCLA Home > Specifications & Publications > Conversion Calculators Photo Galleries Cedar Products Installation & Finishing Cedar Benefits Purchasing Cedar Specifications & Publications Overview | Specifications | Conversion Calculators | Brochures/Publications | Training | DIY Project Videos   Span Calculator The Canadian Wood Council (www.CWC.ca) offers an online span calculator. Select "Northern Species" for spans appropriate for Western Red Cedar. This is a guide only. Siding Coverage Calculator 1. Enter the calculations for the total wall area (length x height):   Total Length: Total Height: 2. Subtract square footage of openings for windows and doors:   Doors: Windows: 3. Select the appropriate factor for either linear or surface measurement:   Nominal Width (inches) Dressed Width (inches) Exposed Face Width (inches) Linear Feet Factor Surface Measure 4 3 1/2 2 1/2 4.80 1.60 6 5 1/2 4 1/2 2.67 1.33 8 7 1/2 6 1/2 1.85 1.23 10 9 1/2 8 1/2 1.41 1.18 12 11 1/2 10 1/2 1.14 1.14 Result   10% is added to accomodate trim.   Linear Feet: Surface Measure:   Decking Calculator 1. Enter the full square footage of the deck you wish to cover:   2. Select the nominal size of the decking:   1 - 1/4 x 4 2 x 4 1 - 1/4 x 6 2 x 6 Result   10% is added to accomodate trim.   Total linear feet required: ©2006 Western Red Cedar Lumber Association | Disclaimer | Site Administrator Website design in Vancouver by Graphically Speaking