Radiata pine is the most commonly available timber in New Zealand. It is used for a wide variety of purposes because of its affordability and quick maturity. A pale coloured timber with wide distinguishable growth rings. The timber is generally quite uniform in grain structure. This timber is not naturally durable. However, with preservative treatment the timber can be as durable as most durable hardwoods.
The cost of pre-primed pine weatherboard, 150mm X 25mm bevel back linear meter, is around $10. However, building companies often use a square metre rate to attract customers. This estimation method can provide a high level cost. However, this method can also be misleading as it does not take into consideration, for example, the shape of the house or access to the house. To obtain a better cost estimate, the job would require a detailed take-off from the plans and specifications designed for the project. Estimators can also complete take-offs by visiting existing buildings and construction sites.
Accoya wood is comparable or better than the durability of hardwoods such as Jarrah, Rosewood, and Teak. Recent tests show that Accoya wood is perfect for coated cladding where reduced maintenance is required, even with wood stains and dark colours. The acetylation process makes pine super durable, super stable and retains all the strength of pine.
The cost of Accoya weatherboard, 150mm X 25mm bevel back per linear meter, is around $32.
Western red cedar is a light timber with a distinctive odour. It is non-resinous and straight-grained, with obvious growth rings. This timber adopts a uniform reddish-brown colour once dried. However, after long exposure wood becomes silver grey. This timber stains and paints well.
The cost of cedar weatherboard – vertical shiplap 150mm X 22mm per linear meter, is around $21.
A number of companies supply pre-primed timber weatherboards. Primers range from water-based, solvent-based, dual coats and some are applied with UV curing technology.
Tip: Weatherboards should only be painted when dry and the board is near equilibrium moisture content. As a minimum two top coats of premium low gloss acrylic should be applied.
• Resene Paint Systems
• Dulux Paint Systems