Design and Construction

The two major factors which affect the performance of the paints and stains, and subsequently that of the timber, are moisture and sunlight.

Any design features which minimise possible moisture ingress to the substrate or exposure to high angle incident sunlight will be of benefit to both the paint and the wooden substrate.

In the southern hemisphere the north facing exposure is most severely affected by sunlight, with the severity of exposure changing with the latitude of the site itself.

When considering your design parameters, take into account what aspects of your design will impact on the building elements subject to the most exposed north face.

If you decide to go for something that’s going to require more regular maintenance make sure that in years to come those surfaces are easy to get at.

Some design steps which can be taken to assist in excluding moisture and protecting from UV are:

• The use of wide eave overhangs, verandas, pergolas etc.
• Use profiles with rounded arises
• Fit drip caps over doors and windows
• Minimise joins in horizontal sidings likely to allow moisture ingress
• Provide adequate ventilation; refer to the appropriate building code.
• Use the recommended nail size and pattern for various types of timber cladding
• Carry out the priming, putty holes and correctly install flashings and sealants
  
  immediately after or preferably during the installation of the exterior cladding.