Coatings

Yes. Both JSC Scumble® and JSC Coda® are suitable for interior and exterior applications. However, for exterior use, the choice of colour is critical, as darker colours can increase heat absorption, potentially leading to timber movement or warping. Factors such as timber species, board profile, and board size should also be considered. It’s recommended to consult a JSC representative to ensure your chosen colour and timber combination are suitable for your project. 

JSC Coda® Luxury Interior Wax, also known as 'Lux Wax' is designed exclusively for interior timber surfaces only.

If coating is to be applied, JSC will always offer this as a Dressed & sanded supply. This is because dressed face timbers close the pores of the timber, meaning coatings sit on the surface rather than absorbing into the fibre, causing delays and potential coating consistency issues. Drying times can also be further reduced by specifying JSC Scumble & Coda coating products. Speak to a JSC representative about the best surface finish and coating options for your specific project.

• Cleaning: Perform annual cleaning with a soft brush and mild detergent to remove surface contaminants such as dust, pollen, or mould. Avoid high-pressure water blasters, as they can damage the timber and coating.
• Inspections: Conduct inspections every 12 months (or every 6 months in harsher environments like coastal areas) to identify signs of wear or degradation.
• Recoating:
  • JSC Scumble®: Typically requires recoating every 3-5 years*
  • JSC Coda®: Typically requires recoating every 2-3 years*

*Recoating intervals depend on factors such as site exposure, timber species, coating colour, and maintenance. These intervals may extend beyond these timeframes with regular maintenance and site-specific care.

Maintenance coats should be applied if there are visible signs of wear, such as loss of water repellence, colour fading, or exposed end-grain. Regular maintenance not only preserves the coating but also ensures the timber remains protected and visually appealing. For more information see the full JSC Coatings Guide

JSC offers a range of coatings to suit different project needs:

• JSC Scumble® is a high-pigment coating that delivers excellent coverage, longer recoating intervals, and enhanced protection. Suitable for interior and exterior applications, it is available in 10+ colours, making it ideal for projects prioritising durability, longevity, with a higher coverage finish. JSC Scumble’s range leans towards natural tones inspired by the New Zealand landscape and creates a more covered look than JSC Coda™, while still retaining the natural timber appeal.
• JSC Cod® offers a semi-transparent finish, showcasing the natural grain and texture of the timber. With 15 colours and a clear option, it features a diverse colour palette, including striking, bold options suited to architectural projects with distinctive aesthetics. Also suitable for interior and exterior use.
• JSC Coda™ Luxury Interior Wax often referred to as “Lux Wax” is crafted exclusively for interior use, providing a silky matte finish that enhances the timber’s natural beauty while offering moisture protection and lasting performance.

Samples are available to review coatings on your selected species - Visit jsc.co.nz/jsc-samples

Yes, as long as you are using the same base oil i.e JSC Scumble over JSC Scumble or JSC Coda over JSC Coda then a darker coating can be applied. Always check with JSC first to confirm that the colour is suitable for your chosen timber and profile as some timbers can not handle the heat that comes with darker colours. We always recommend doing a test sample on an offcut piece of timber where possible to confirm colour is as desired.

On average, recoating is required every 2 to 4 years. JSC Scumble - typically every 3-5* years while JSC Coda would be typically 2-3 years*. The timeframes would be affected by factors such as:

• Weather/UV exposure/Humidity

• Site location and orientation

• Timber species

• Coating colour

• Restricted light and air flow

• Proximity to vegetation and airborne contaminants

• Maintenance frequency