Where to buy
Siding

Siding Resources

Introduction
Siding Home
Siding Gallery
Why Use Western Red Cedar?
Characteristics & Properties of Western Red Cedar
Benefits of Real Cedar
Real Cedar History
Real Cedar Certification
Sustainability and the Environment
Design & Spec
Siding Grades
Siding Profiles
Bevel
Board & Batten
Tongue & Groove
Lap or Channel
Western Red Cedar Trim Boards
Western Red Cedar Shingle Panels
Siding Calculator
Build & Install
Preparation
Pre-Building
DuPont Tyvek DrainWrap
Installation
General Installation
Installing Profiles
Bevel
Board & Batten
Tongue & Groove
Lap or Channel
Trim Boards
Shingle Panels
Finish & Maintain
Choosing a Finish
How to Finish
Care & Maintenance
Restoration
Decking

Decking Resources

Introduction
Decking Home
Decking Gallery
Why Use Western Red Cedar?
Characteristics & Properties of Western Red Cedar
Benefits of Real Cedar
Real Cedar History
Real Cedar Certification
Sustainability and the Environment
Planning
Decking Grades
Span Tables
Decking Calculator
Deck Projects
Roof Deck
Raised Deck
Ground Level Deck
Uphill Sloping Lot Deck
Build & Install
Fasteners
Stairs & Railings
Finish & Maintain
Choosing a Finish
How to Finish
Care & Maintenance
Restoration
Outdoor

Outdoor Resources

Introduction
Outdoor Home
Outdoor Gallery
Why Use Western Red Cedar?
Characteristics & Properties of Western Red Cedar
Benefits of Real Cedar
Real Cedar History
Real Cedar Certification
Sustainability and the Environment
Design & Spec
Real Cedar Free DIY Project Plans
Pre-Built Kits
Design Tips
Build & Install
Project Preparation
Fasteners
Fence Construction
Western Red Cedar Fence Specifications
Pre-Built Fence Panels
Finish & Maintain
Choosing a Finish
How to Finish
Care & Maintenance
Restoration
Indoor

Indoor Resources

Introduction
Indoor Home
Indoor Gallery
Why Use Western Red Cedar?
Characteristics & Properties of Western Red Cedar
Benefits of Real Cedar
Real Cedar History
Real Cedar Certification
Sustainability and the Environment
Design & Spec
Cedar Saunas
Traditional Saunas
Infrared Cedar Saunas
Design Tips
Build & Install
Tongue & Groove Paneling
Doors & Windows
Blinds & Shutters
Preparation
Finish & Maintain
How to Finish
Care & Maintenance
About Us

About Real Cedar

The WRCLA
About Us
Our Mission
WRCLA Events
Contact Us
Our Members
Executive Members
Affiliate Retailers
Affiliate Manufacturers
Affiliate Partners
Certified Cedar Distributors
Certified Cedar Distributors USA
Certified Cedar Distributors Canada
International Associates
Asia
Europe
Oceania
Gallery
Videos
Blog
Resources
For Architects
Member Login

Western Red Cedar Trim Boards

Introduction

Western Red Cedar Trim Boards are available in a variety of grades and textures to complement the style you have envisioned. Clear boards have a limited number of natural characteristics and are specified when “clean”, fine appearance of the highest quality is desired.

Grades

Trim Board Grading

Clear boards have a limited number of natural characteristics and are specified when “clean”, fine appearance of the highest quality is desired. They are available kiln dried or unseasoned. Knotty boards present a more rustic appearance and may be specified seasoned or unseasoned. Texture options of rough, surfaced one side, two edges and surfaced on four sides further enhance your design flexibility.

Western Red Cedar boards may be specified in one of three surface finishes: rough; surfaced one side, two edges (S1S2E); or surfaced four sides (S4S).

Rough Boards

The rough sawn texture from either circular or band saws is present on all four sides.

Surfaced One Side, Two Edges (S1S2E)

This versatile product is the most popular choice for trim boards. The surfacing process resulting in a rough sawn face and a smooth back provides uniform width and thickness tolerances. Typically graded from the rough face, it may in some instances be reversible to the smooth back.

Surfaced Four Sides (S4S or PAR, D4S)

The smooth surface on all four sides presents a uniformly sized product with a quality appearance. This surface finish is most commonly found on Clear grades.

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

Dimensions

Trim Board Sizes

Thickness (in.)Width (in.)
NominalActualNominalActual
DryGreenDryGreen
Rough
13/43/421-3/42
13/1613/1632-3/43
7/87/843-3/44
5/41-1/81-1/865-3/46
87-3/48
109-3/410
1211-3/412
Surfaced One Side Two Edges (S1S2E)
111/1611-1621-1/21-9/16
7/83/432-1/22-9/16
13/1643-1/23-9/16
7/865-1/25-9/16
5/411-1/3287-1/47-3/8
21-1/21-1/2109-1/49-3/8
1211-1/411-3/8
Surfaced Four Sides (S4S)
111/163/421-1/21-9/16
7/83/432-1/22-9/16
13/1643-1/23-9/16
7/865-1/25-9/16
5/411-1/3287-1/47-3/8
21-1/21-9/16109-1/49-3/8
1211-1/411-3/8

Specifications

Trim Board Specifications

Specification Information RequiredSample Specification
Species:
Western Red Cedar
WRCLA Western Red Cedar
Product Pattern and Intended Use:
Trim boards are generally used in applications such as corner boards, fascia, skirting, and detail around windows and doors. Specify the surface finish by choosing surfaced four sides (S4S) surfaced one side and two edges (S1S2E), or rough sawn all round (rough).
S1S2E Boards
Size:
Specify the nominal size of the product.
1 x 6 in.
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. 200a, b
Moisture Content:
Specify whether the product is to be green (unseasoned) or kiln-dried.
Green
Surface to be exposed:
Specify the application orientation to assist the supplier in shipping the right product for the job.
Resawan face
Quantity:
Express in linear feet
2,000 linear feet

You Cedar as much as we do?