Treated
Pine Timber
Treated Pine Timber is an excellent choice for outdoor construction, decking substructures, fencing, and garden projects. Through pressure impregnation with copper-based preservatives, pine gains significantly improved durability and resistance against rot, fungal decay, and insect attack. This treatment process extends its lifespan, making it a cost-effective alternative to more expensive hardwoods.
Pine timber is naturally lightweight and easy to work with, allowing quick installation whether used for structural framing or exterior joinery. Its pale cream to yellowish colour with a slight greenish tint from treatment blends seamlessly into traditional or modern landscapes. To maintain its appearance and prevent surface checking, applying a UV-protective oil is recommended for maximum longevity and aesthetic appeal.
At House Land Holz, we supply high-quality treated pine timber in various standard dimensions, ideal for contractors, landscapers, architects, and DIY projects seeking durability at an affordable price. Enhance your garden structures, pergolas, fencing, raised beds, or decking frames with treated pine timber – reliable, strong, long-lasting, and ready for outdoor exposure all year round.
Where Treated Pine Timber is Used
✅ Decking Substructures: Ideal for joists, bearers, and support frames due to its durability after treatment.
✅ Fencing: Posts, rails, and panels in garden or agricultural fencing systems.
✅ Garden Structures: Pergolas, trellises, gazebos, arches, and other landscape timber features.
✅ Outdoor Cladding & Facades: Suitable for budget-conscious projects with additional protective coating.
✅ Playground and Park Furniture: Benches, outdoor seating frames, and simple timber structures.
- Treatment: Pressure impregnation (vacuum-pressure) with copper-based preservatives (e.g. Tanalith E, Wolmanit CX)
- Durability Class (EN 350): Class 3–4 after pressure treatment depending on exposure and treatment level
- Service Life Expectancy: 15–25 years above ground with proper maintenance
- Density (at 12% MC): Approximately 510–550 kg/m³
- Resistance to Fungal Decay & Insects: Enhanced significantly through impregnation, suitable for Use Class 3 (external above ground)
Treated construction
grade pine
Enhance your outdoor spaces with our treated, impregnated vacuum pine decking boards. Designed for durability and long-lasting performance, these boards are pressure-treated to resist decay, insects, and weathering. The smooth profile provides a sleek, comfortable surface for walking and lounging, while maintaining a natural timber appearance. Ideal for patios, terraces, and garden decks, they are easy to install and maintain. Strong, reliable, and visually appealing, these decking boards offer the perfect combination of quality and practicality for any outdoor project.
Treated planed
pine
Enhance your outdoor spaces with our treated, impregnated vacuum pine decking boards. Designed for durability and long-lasting performance, these boards are pressure-treated to resist decay, insects, and weathering. The smooth profile provides a sleek, comfortable surface for walking and lounging, while maintaining a natural timber appearance. Ideal for patios, terraces, and garden decks, they are easy to install and maintain. Strong, reliable, and visually appealing, these decking boards offer the perfect combination of quality and practicality for any outdoor project.
Treated (impregnated) pine
decking boards
Enhance your outdoor spaces with our treated, impregnated vacuum pine decking boards. Designed for durability and long-lasting performance, these boards are pressure-treated to resist decay, insects, and weathering. The smooth profile provides a sleek, comfortable surface for walking and lounging, while maintaining a natural timber appearance. Ideal for patios, terraces, and garden decks, they are easy to install and maintain. Strong, reliable, and visually appealing, these decking boards offer the perfect combination of quality and practicality for any outdoor project.
Treated Spruce Timber vs ThermoWood Pine vs Treated Pine vs Larch
| Feature | Treated Spruce Timber | ThermoWood | Treated Pine Timber | Siberian Larch |
|---|---|---|---|---|
| Species | Picea abies (Norway Spruce) | Softwoods (thermally modified) | Pinus sylvestris (Scots Pine) | Larix sibirica (Siberian Larch) |
| Density (at 12% MC) | 400–470 kg/m³ | 400–500 kg/m³ | 510–550 kg/m³ | 550–650 kg/m³ |
| Modulus of Elasticity | ~10,000–11,000 N/mm² | ~9,000–11,000 N/mm² | ~11,000 N/mm² | ~12,000–13,000 N/mm² |
| Bending Strength | 40–80 N/mm² | 40–80 N/mm² | 50–80 N/mm² | 70–100 N/mm² |
| Durability Class | 4 untreated; Class 3–4 treated | 2–3 (thermally modified) | 4 untreated; Class 3–4 treated | 3–4 (naturally durable) |
| Moisture Content | 12–18% (kiln dried) | 8–12% (thermally modified) | 12–18% (kiln dried) | 12–18% |
| Treatment / Protection | Copper-based pressure treatment | Thermal modification; no chemicals | Copper-based pressure treatment | Naturally durable; optional treatment for extreme exposure |
| Workability | Easy to saw, plane, nail, screw | Easy, but slightly brittle after modification | Easy to saw, plane, nail, screw | Moderate; denser, may require pre-drilling |
| Appearance | Pale cream to yellow; slight green tint after treatment | Darker brown; smooth, consistent surface | Pale cream to yellow; slight green tint after treatment | Reddish-brown; straight, fine grain |
| Typical Applications | Decking subframes, fencing, garden structures | Exterior cladding, decking, facades, garden structures | Decking subframes, fencing, garden structures, outdoor joinery | Cladding, decking, garden structures, heavy-duty exterior joinery |
Larch offers the highest natural durability among the four, suitable for outdoor use without treatment. Treated Spruce achieves good durability through impregnation, while ThermoWood Pine achieves moderate durability via thermal modification. Untreated Pine is the least durable for external use.
ThermoWood Pine shows the best dimensional stability due to reduced swelling and shrinkage from thermal treatment, making it ideal for cladding or joinery requiring precision. Larch also performs well. Spruce and Pine are prone to warping without proper treatment and installation.
Larch requires minimal maintenance if the weathered look is acceptable. ThermoWood Pine benefits from oiling to retain colour but remains dimensionally stable without it. Treated Spruce requires maintenance to reduce checking and splitting. Untreated Pine needs full treatment for any external application.
