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Cowichan Gold Western Red Cedar Slatted Screen Boards 89mm

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PRICE (EX VAT) per linear metre
18 x 89mm £4.67

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(exc VAT) £0.00 (inc VAT) £0.00


Cowichan Gold slatted screen boards are produced from fine-grained, old-growth, exceptional Western Red Cedar wood fibre sourced from the coastal regions of British Columbia.

They are manufactured to the highest production standard in the industry by Terminal Forest Products, a family-owned and operated company, which has built an enviable reputation throughout the sawmill industry as a leader in quality and consistency.

Terminal's most exclusive brand, Cowichan Gold, is almost entirely knot free and virtually all heartwood, making it one of the highest quality Western Red Cedar screening products available anywhere.

Recommended Posts: 90 x 90mm Standard Posts

Recommended Nails: 50mm Flat Head Stainless Steel Annular Ring Nails

Recommended gap between boards: 18mm

At a glance

  • Made from kiln-dried, Canadian Western Red Cedar.
  • Very popular for various types of fencing, railing and screens
  • Highest quality wood fibre with virtually no knots
  • Highly durable material
  • Light weight for easy installation

Please ensure when ordering that you make an allowance for wastage. We recommend adding an additional 10-15% over and above your initial requirements.

Create an architectural look that provides visually interesting shadow lines and texture.

Slatted screens can enhance a garden's style with a contemporary look:

• Creates a surface with ever changing patterns of light and shadow
• Provides a wonderful backdrop for plants and foliage
• Truly versatile - slats available in a variety of widths and length allow you to create unique visual rhythms and proportions
• Simple installation methods transforms landscapes instantly
• Provide privacy without complete obstruction
• Horizontal boards are more effective at screening against wind than a solid fence
• Can provide shade without sacrificing natural light
• Define boundaries within the garden - separate relaxation areas from storage space.

A well designed and carefully built screen can provide a wonderful focal point for an outdoor space, so choosing the correct material is paramount. No other material compares to Western Red Cedar in terms of appearance, with beautiful warm colours and tight grain patterns providing a stunning natural material.

Stability is also key for slatted screens. To maintain the crisp, clean lines that are essential to the overall look of the screen it is important to choose a material that is less susceptible to warping or twisting. Being one of the most stable wood species on the planet, Western Red Cedar fits the bill perfectly.

Silva Timber's Western Red Cedar makes perfect sense:

• Highly durable and long lasting
• Exceptional stability means Cedar boards remain flat and straight
• Clear grade Western Red Cedar offers unrivalled beauty
• Being light in weight, Cedar is easy to cut and handle on site, reducing build time
• Beautiful tones and grain patterns
• A proven performer in all types of climate, so its a natural product you can rely upon

Surface Texture

Cowichan Gold Boards are smooth on one side and both edges, and have a SAWTEX® textured finish to the rear.

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Finishing & Protection

It is recommended that a finish is applied to all surfaces, including ends, before installation. The type of coating will be determined by the final finish and appearance desired.

Why Factory Coat?

  • Enhances the natural beauty of wood
  • Ensures a consistent finish
  • Applied in factory conditions
  • Long lasting protection against weathering
  • Simple maintenance routine
  • Reduces onsite labour costs

Sansin Enviro Stains

Easy to apply and maintain, Sansin Enviro-stains deliver outstanding performance. Sansin's range of wood protection products are available in 80 colour tones

What is weathering?

There is a risk involved when leaving wood exposed to the elements. During the weathering process wood can appear unsightly as the material can blacken due to moisture getting into the fibres and pulling out tannins and extractives. Finish protects the wood from moisture absorption and UV degradation.

What to expect from timber products

When working with timber it should be expected that although ‘on-grade’, occasional boards may have minor imperfections that will require ‘working’ if you wish to eliminate. Examples include raised grain, small splits, minor handling marks, sticker marks etc – all of which can easily be remedied by trimming, gluing or sanding. In most cases imperfections can be removed with very little effort, and the small amount of off cuts generated as a result will be absorbed in the normal cutting and selection allowance.



Cowichan Gold A & Better Clear Grading Criteria General Notes
  • Graded to BS1186-3 Part 4 Class 1
  • High-quality production - exceeds NLGA grading rules
  • Clean, consistent virtually knot free appearance
  • Kiln-dried to moisture content of 16-18% (+/- 2%)
  • PEFC Certified

  • Wood Fibre

    Fine grained, old growth wood from forests in coastal regions of British Columbia, Canada


    Permitted - though occasional small knots are allowed within the official industry grading rules*, this product is virtually, or even entirely free of knots.

    Sap Wood

    Permitted - occasional light sapwood may be present on a small percentage of boards.

    Compression Wood

    Permitted - occasional – unlikely to be present.

    Deformation (Warp)

    Permitted - boards with minor curvature and twisting, as far as proper installation is ensured. As a guide, a 10mm deviation from true is permitted on a 19 x 89 x 2440mm board. The longer the board, the greater the deviation from true is permitted.


    Permitted - small checks permitted.


    Permitted - short splits permitted equal in length to the width of the board. Splits may be present in small percentage of boards.

    Torn or Raised Grain

    Permitted - light torn or raised grain permitted.

    Machining / Handling Marks

    Permitted - occasional minor marks / blemishes may be present.

    Colour Variation

    Permitted - colour can vary between boards and within boards. Typical colour range: light straw to dark reddish brown.

    This is offered as a general guide to the main characteristics likely to be encountered in any shipment of Cowichan Gold A & Better Clear material. There are many other minor wood characteristics not listed which may occasionally be present but would not detract from the usability of the material.

    *National Lumber Grades Authority (NLGA) Standard Grading Rules for Canadian Lumber


    This product carries Programme for the Endorsement of Forest  Certification  (PEFC)

    The PEFC Council is an independent, non-profit, non-governmental organisation founded in 1999 which promotes sustainably managed forests through independent third party certification. The PEFC provides an assurance mechanism to purchasers of wood and paper products that they are promoting the sustainable management of forests.

    PEFC works throughout the entire forest supply chain to promote good practice in the forest and to ensure that timber and non-timber forest products are produced with respect for the highest ecological, social and ethical standards. Thanks to its  eco-label, customers and consumers are able to identify products from sustainably managed forests.

    Silva Timber meets the requirements for PEFC Chain of Custody within the BM TRADA Certification Limited Scheme for TRADA - Trak chain of custody certification.

    Certificate number: BMT-PEFC-0319

    Western Red Cedar is the ultimate green building material. It is legally, responsibly and sustainably harvested in the publicly managed forests of British Columbia, Canada. Less than 1% of standing timber is harvested each year.

    For each tree harvested, three are replanted to ensure the forests will exist in perpetuity. Western Red Cedar has a low impact on the environment throughout its life cycle. It requires significantly less energy to produce than man-made alternatives and is bio-degradable.


    • FSC
    • PEFC
    • Trada member
    • Responsible purchaser
    • Cedar Shake & Shingle Bureau
    • Secured by