Scots Pine, European Redwood (Pinus Sylvestris)
- Most commonly used in UK joinery construction
- Heartwood is highly suitable for joinery manufacture with moderate to low movement characteristics and moderate durability when out of ground contact.
- Sapwood should make up only a low proportion of the component volume for exterior joinery as it is low in dimensional stability and is non durable against exterior wood rotting fungi. The sapwood can be treated with traditional vacuum impregnation methods if required and will absorb superficial preservative treatments.
- The margins of live and dead knots contain extractives (tannins) that will stain light coloured paint finishes. This staining is dark brown or even purple in colour.
- Resin will be contained in live knots and in certain early wood bands. Liquid resin can diffuse through the surface coating. This often results in amber/brown stains on light coloured coatings.
Target moisture content of timber prior to machining should be between 12 and 16%