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Western Red Cedar Tongue & Groove Siding

Introduction

Western Red Cedar Tongue & 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 & groove siding is available with rough or smooth faces. Both seasoned (kiln-dried) and unseasoned (green) sidings are available.

In this section

Table of Contents

Grades

Tongue & Groove Siding Grading

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.

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 but 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 product’s versatility.

Please visit the Siding Grades page for more photos of various siding grades.

Joints

The joints between adjoining pieces are usually v-shaped but 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 product’s versatility.

Dimensions

Tongue and Groove Sizes

Nominal Finished
Green Dry
Thickness (in.) 1 3/4 11/16
Widths (in.) 4, 6, 8 3-9/16, 5-1/2, 7-3/8 3-3/8, 5-3/8, 7-1/8

Coverage

Tongue and Groove Coverage

Tongue and Groove Siding Coverage Table For Dry (Seasoned) Siding

Nominal Width (in.) Dressed Width (in.) Exposed Face Width (in.) Linear Feet Factor Board Feet Factor
4 3-3/8 3 4.00 1.33
6 5-3/8 5 2.40 1.20
8 7-1/8 6-3/4 1.77 1.19

Specifications

Tongue and Groove Specifications

The following information is required when specifying tongue and groove panelling products:

Specification Information Required Sample Specification
Species:
Western Red Cedar
WRCLA Western Red Cedar
Product Pattern and Intended Use:
Siding is used as an exterior cladding to provide both weather protection and architectural style. The designer may choose from Edge V one side (EV1S) WRCLA1, Edge V two sides (EV2S), WRCLA2, or specific pattern number.
Tongue and Groove EV1S – WRCLA1
Size:
Specify the nominal size of the product.
1 x 6″
Grade:
The grade of the product governs its overall quality. Refer to WRCLA specification literature or grading agency rule books for available grades.
Select Knotty
Grading Agency Paragraph:
To ensure that the product meets a written standard, an agency grade paragraph should be referenced.
NLGA para. 204a
Moisture Content:
Specify whether the product is to be green (unseasoned) or kiln-dried.
Kiln-dried
Surface to be exposed:
Specify the application orientation to assist the supplier in shipping the right product for the job.
Sawn face
Quantity:
Express in board feet the quantity required. See WRCLA table for factor to convert square feet of wall area to board feet.
5500 board feet