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Buffalo Lumber Company, Inc., Lumber - Retail, Woodbury, TN

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Cedar Lap Siding

Ship lap siding Pattern Shiplap Siding standard pattern sample
Ship lap siding Pattern A "Flush Joint" Square Edge profile
Unit of Channel Rustic Lap Siding WRC Channel Lap Siding Pattern milled PROFILE
CHANNEL RUSTIC lap siding pattern - Just Milled WRC Channel Rustic Lap Stained & INSTALLED
Dutch lap siding Pattern Profile Dutch Lap Siding standard pattern profile
Unit stack of Dutch Lap Siding Unit stack of Dutch Lap Siding
Bevel Cedar Siding - PreStained & Racked to dry Bevel Cedar Siding - PreStained & Racked to dry
Western Red Cedar Bevel unit - Ready for Delivery Western Red Cedar Bevel unit - Ready for Delivery

Lap Siding Patterns

Cedar Lap Siding Prices

Wood Lap Siding is milled for horizontal applications and is installed so that each board overlaps the one below it. Horizontal Lap Siding patterns are nailed through sheathing into studs and should not be nailed through overlapping edges. Wood Lap Siding is milled in various patterns including our favorites:

Shiplap siding Ship Lap Siding is a type of Drop Lap siding with a tight "flush joint" profile. It is similar to tongue and groove but with a single over lap - usually 1/2" in depth but can me more or less depending on the width of the board 6", 8", 10" or the shiplap profile selected. Shiplap is known for its ability to form a tight seal while allowing the wood siding to "breath" with changes in season and humidity. Custom modification to the standard Shiplap "Flush Joint" profile has gained in prominance. Sometimes called Nickel Gap, Shadow Gap, Shadow Profile, Shadow Line, Small Reveal and "Thin Line" this profile includes a narrow gap where the boards overlap. When installed a "shadow" effect is created.

Shiplap Pattern diagram.jpg

Shiplap Pattern - SHADOW GAP profile diagram.jpg

Channel Rustic Siding has 1/2” overlap and a 1” to 1 1/4" reveal that creates a channel effect between boards. The Channel Siding pattern allows for maximum dimensional wood change (breathing) in climates of highly variable moisture levels between seasons - without adversely affecting the appearance of your channel lap siding. Usually available smooth, rough or saw textured. The back face has a center groove to prevent cupping in wider boards. You can flip the board to display the grooved face.

Dutch Lap Siding is also know as Cove Lap and German Lap Siding. The WWPA (Western Wood Products Association) simply calls it pattern "105". Cove Lap (as we refer to it) has the same general pattern outline as channel rustic lap siding but with a curved "reveal" that displays between the installed boards (pictured above). Our Cove Dutch Lap siding is best milled when extra dry so request fully air-dried or Kiln Dried seasoning.

Bevel siding is manufactured by resawing lumber at an angle to produce two pieces thicker on one edge than the other - sometimes called clapboard, with a thick butt and a thin upper edge lapped to shed water. The bevel edge gives an attractive shadow line. The Dolly Varden bevel pattern is a special mill cut that produces a thicker bevel pattern with a 1/2" rabbeted edge for easy installation.

Check out our Cedar Lap Siding Prices


LAP patterns are often sold by the linear (or lineal) foot. To figure out how many linear feet (LFT) you need you must multiply the square foot area you plan to COVER by a linear factor based on the pattern width you have selected 6", 8", or 10". The Lineal Foot Factor is derived by dividing 12 inches by the individual pattern's "exposed" face - the width that is still visible after the siding boards are installed.

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 = SQFT needed
D) Multiply SQFT result by the linear factor = LFT needed

BUYER BEWARE WARNING: The actual "dressed" widths and "Exposed Face" measurements below are suggested based on our experience in the industry. HOWEVER individual mills often have their own pattern standards which vary from the norm. When you get ready to buy be sure to ASK for the exposed width to make sure you are buying enough to complete the job!

SHIPLAP Siding Coverage Factors*

Nominal WidthDressed WidthExposed FaceLinear Ft Factor
6" 5 3/8" 4 7/8" 2.46
8" 7 1/8" 6 5/8" 1.81
10" 9 1/8" 8 5/8" 1.39

* assuming 1/2" board overlap

CHANNEL RUSTIC LAP Siding Coverage Factors*

Nominal WidthDressed WidthExposed FaceLinear Ft Factor
8" 7 1/8" 6 5/8" 1.81
10" 9 1/8" 8 5/8" 1.39

* assuming 1/2" board overlap

DUTCH LAP Siding Coverage Factors*

Nominal WidthDressed WidthExposed FaceLinear Ft Factor
6" 5 3/8" 4 7/8" 2.46
8" 7 1/8" 6 5/8" 1.81
10" 9 1/8" 8 5/8" 1.39

* assuming 1/2" board overlap

BEVEL No Rabbet (Clapboard) Coverage Factors*

Nominal WidthDressed WidthExposed FaceLinear Ft Factor
4"3 1/2"2 1/2"4.8
6"5 1/2"4 1/2"2.66
8"7 1/4"6 1/4"1.92
10"9 1/4"8"1.5

* assume 1" overlap 4-8 widths 1+1/4" for 10"

BEVEL Rabbeted (Dolly Varden) Coverage Factors*

Nominal WidthDressed WidthExposed FaceLinear Ft Factor
4"3 1/2"3"4
6"5 1/2"5"2.4
8"7 1/4"6 3/4"1.78
10"9 1/4"8 1/2"1.41

* assume 1/2" rabbet 4-8 widths 3/4" for 10"

Haida Skirl Wavy Bevel Siding Coverage Factors*

Nominal WidthDressed WidthExposed FaceLinear Ft Factor
10"9 1/2"7 1/2"1.6
10"11 1/2"9 1/2"1.26

* assume 2" board overlap

Example of 1x8" Pattern Coverage estimation: If you are siding four walls 8 feet high by 40 feet long with 8" wide SHIPLAP boards and you allow 10% of the total square feet for openings, you would need approximately 2300-2350 linear feet:

SQFT AREA: 4 * 8 * 40 = 1280 SQ FT - 128 (10% openings) + 115 (10% trim/waste) = 1267 SQ FT

8" Ship-lap Pattern: 1267 SQ FT * 1.81 linear factor = 2293.3 LFT

Thick Bevel Rabbeted Siding STK grade - Stained Olympic # 712, Black Oak	- home  in North Carolina
1x8" Thick Bevel Rabbeted Siding STK grade - PreStained Olympic #712 "Black Oak" - home in North Carolina

Help Us Answer Your Questions

Because we are committed to answering every request, our phones ring off the hook. In order to make sure you get the attention you deserve, we ask that you help us help you.

When you call our toll free line you will be asked a few questions to confirm if we can truly help with your project. If it looks like we can we will set up project consultation with a sales expert. This a 15 minute free consultation. If our products and services are a good project match, we will also give you a verbal "ball park" price and total cost estimate to help you plan your project costs.

BEFORE we can give you a Ball Park Price we will need to know the approximate square feet required and the Ship to location (city, state, zip). This information is used to make sure everyone who makes an appointment receives the advice and customer service we have promised. Your information will not be shared or sold.

CONTACT Buffalo Lumber

ABOUT Buffalo Lumber

Clear Grade Cedar Siding Shiplap Nickel Gap Pattern Pre-Finished
1x6 CLEAR Cedar Shiplap "Nickel GAP" profile - Mill Pre-Stained TWP Natural #1530 – home in NJ

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