Overview

Radiata Pine is a plantation softwood widely used for framing, structural elements, and exterior applications when correctly treated. It offers consistent quality and strong value.

With the right hazard-level treatment and detailing, it performs reliably in a variety of environments.

Appearance

• Colour: pale cream to light yellow; darkens slightly over time.
• Grain: straight and even; fine uniform texture.
• Figure: small tight knots depending on grade; generally unobtrusive.
• Finishing: readily accepts paints and stains; seal end-grain.

Workability

• Machining: easy to cut and plane; minimal tool wear.
• Fastening: good nail and screw holding; pre-drill near edges.
• Gluing: bonds well with common construction adhesives.
• Finishing: quick to sand; prime before painting for best results.

Performance & durability

Untreated material is best reserved for interior dry use. For exterior or ground-contact exposure, specify the correct treatment level and maintain protective coatings.

• Use stainless fixings in coastal/exterior applications.
• Detail to shed water and ventilate assemblies.

Structural/grades

Widely available in graded structural sizes for studs, joists, and beams. Follow span tables and supplier guidance.

• Confirm grade, MC, and treatment class to match exposure.

Typical applications

• Wall and roof framing
• Deck substructures (treated)
• Fascia, bargeboards and external trim (treated)
• General carpentry

Key properties (indicative)

• Mass: light to medium (easy handling)
• Durability: interior when untreated; treated for exterior classes
• Movement: generally stable when protected from moisture
• Treatability: good; wide range of treatments available

Source & attribution