What Are Blue Label Cedar Shingles?
Blue Label Cedar shingles are premium-grade Western Red Cedar (Thuja plicata) shingles certified by the Cedar Shake & Shingle Bureau (CSSB) in North America.
The “Blue Label” mark guarantees that the shingles are made from 100% heartwood, edge-grain, and clear (knot-free) timber — the highest quality grade available.
These shingles are widely used for roofing, wall cladding, and decorative finishes due to their durability, weather resistance, and beautiful natural appearance.
Material Overview
| Property | Description |
| Species | Western Red Cedar (Thuja plicata) |
| Grade | Blue Label (Premium) – highest CSSB grade |
| Origin | British Columbia, Canada / Pacific Northwest USA |
| Moisture Content | Air-dried to approx. 16–18% |
| Colour | Reddish-brown to pinkish tones, weathers to silver-grey |
| Texture | Fine, straight grain, smooth surface |
| Aroma | Pleasant cedar scent (natural insect repellent) |
What the “Blue Label” Means
- The Cedar Shake & Shingle Bureau (CSSB) uses coloured labels to identify grading quality:
| CSSB Label | Grade | Description |
| Blue Label | Premium | 100% heartwood, clear, edge-grain — best durability |
| Red Label | Select | Good quality, some flat grain or small knots |
| Black Label | Utility | Contains defects; for secondary use only |
- Blue Label = best performance, longevity, and appearance.
Key Features & Benefits
- Exceptional Durability
Western Red Cedar contains natural oils and tannins that resist rot, decay, and insects.
Blue Label quality ensures the shingles are all heartwood, which is naturally durable and stable. - Lightweight & Strong
Ideal for roofing and cladding — easy to transport and install. - Natural Insulation
Cedar provides excellent thermal and acoustic insulation. - Breathable & Moisture Regulating
Allows the building to “breathe,” helping prevent condensation and mould. - Aesthetic Appeal
Natural wood grain and colour variation give warmth and texture.
Weathers gracefully to a silver-grey patina if left untreated.
Common Applications
Roofing on houses, cottages, and heritage buildings
Wall cladding and façades
Gables, dormers, and feature panels
Garden buildings, summerhouses, and sheds
About the CSSB Grading System
- The Cedar Shake & Shingle Bureau uses coloured labels to indicate grading standards:
| Label | Grade | Description | Typical Use |
| Blue Label | Premium | 100% heartwood, clear, edge-grain | High-end roofs & façades |
| Red Label | Select | Good quality, some knots or sapwood | General cladding & secondary roofing |
