Western Red Cedar Posts and Railing Components

From £2.08 £1.73 per linear metre

Enhance your deck project with the Cascadia Western Red Cedar railing system. Four basic components - posts, top/lower rails, cap rails, and balusters - can be used to create a variety of superb railing styles.

Silva's recommended method of construction (illustrated in photographs on this page) is to fit the top / lower rails in between the posts. The cap rail runs across the top of the posts, and the balusters attach vertically to the top/ lower rails. The top of the baluster butts up to the underside of the cap rail and bottom of the balusters can be cut at 45° to give a more finished look. This simple design will produce a stylish and structurally stable deck railing. 


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

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  • SKU: WRC RAILINGS
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Western Red Cedar Posts and Railing Components
SKU: WRC RAILINGS

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SKU: WRC RAILINGS

At a Glance

Posts: 90 x 90mm.

Top/Lower Rails: 40 x 90mm.

Cap Rails: 40 x 140mm.

Balusters: 40 x 40mm.

Grades: Architect knotty / Appearance.

Profile: Post / board / baluster with eased edges.

Surface texture: Smooth.

Moisture content: Kiln-dried at source to 16-18% (+/- 2%).

Cascadia brand decking and railing components are produced for Silva by Terminal Forest Products, a world-class manufacturer of Western Red Cedar products with an unrivalled reputation for quality. The wood fibre is from second-growth logs harvested in coastal forests of British Columbia, Canada.

Cascadia decking forms part of a range of Western Red Cedar cladding, boards, fence, and screen components.

Cascadia is sustainably sourced from well-managed forests and supplied with full PEFC chain of custody certification.

Key Properties

Colour: Palette of rich, warm wood tones, which vary from light amber to dark reddish-brown.

Durability: When properly finished and maintained, Western Red Cedar will deliver decades of trouble-free service. It has a decay resistance of durability class 2 (durable) according to the EN 113 standard. 

Stability: Western Red Cedar has excellent dimensional stability because of its low wood density and shrinkage factor. Shrinkage and swelling are minimal, displaying only small movements with changes in humidity.

Density: The wood of Western Red Cedar is light, weighing 370 to 385 kg/m3 when kiln-dried (12-15% moisture content).

Kiln-dried: Cascadia Western Red Cedar rails and balusters are kiln-dried, giving them many advantages. The process improves dimensional stability, permits the immediate application of a coating, and enables installation with minimal site acclimatisation.  

Grading: Cascadia Top/Lower Rail and Cap Rail is produced exclusively from 'Architect Knotty' grade Western Red Cedar. Posts are made from Appearance grade Western Red Cedar. These grades look very similar and are both characterised by well-interspersed sound tight (live) knots. Read more about Architect knotty and Appearance grading and quality here.

Sourcing/certification: Western Red Cedar is sourced from the most sustainably managed forests in the world in British Columbia, Canada, and comes with full PEFC certification.

Optional Extras

Coatings: The application of a coating is necessary to protect the wood and optimise its appearance over time. The coating should be applied to all surfaces, including ends, before installation. Choose from our wide range of high-performance wood coating systems.

Factory coating service: Cascadia railing components can be supplied factory coated. Having the coating pre-applied on all sides enables it to be installed at any time of year, regardless of the weather or temperature. Please Contact Us for a quotation.

Western Red Cedar decking: Silva stocks Cascadia decking in 2 sizes: 40 x 90mm and 40 x 140mm; and Cedardeck Select decking in 25 x 140mm.

Structural timber: For deck substructures, Silva stocks treated C24 grade carcassing in a range of sizes and lengths.

Screws and connectors: Silva stocks a wide range of stainless-steel deck screwsconnectors, and hidden fixing systems

Timber delivery charges vary based on the products you have ordered, the location of your delivery, the value of your order and the delivery service you require.

Silva Select delivery – Our cheapest timber delivery service with goods expertly delivered by a member of our team on our own vehicles. Priced at £45 + VAT, orders are typically fulfilled within 7 working days*. Available to selected postcodes only.

Haulier delivery – Our haulier delivery service is for areas where our Silva Select service is not available. Lead-times for this service are guaranteed between 5-7 working days, subject to stock availability. Prices start from £95 + VAT.

Saturday deliveries – please call for a quote.

Free delivery is offered on orders over £2,000 + VAT**

You can view our delivery charges and services here.

Please note: As with most building materials, delivery is to the kerbside only.

* Typical lead-time for our Silva Select delivery service is 5-7 days although this is not guaranteed. Please allow up to 14 days for delivery especially at peak times.

** Exclusions apply. See Delivery Information tab for further details.

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