The 5 top threats to your Cedar

Although Cedar weather boards and cladding are beautiful additions to your property, they are under threat from a number of things:

(1) UV Rays: Our harsh sun can destroy the outer fibres of you Cedar. If left unprotected the sun’s UV rays will breakdown the lignin in the Cedar, causing it to grey or silver. In reality what is happening is that the outer fibres are loosening, drying out, and eroding. This creates “weathering” of your timber which is hard to reverse.

(2) Moisture: Our humid climate means the Cedar is exposed to high moisture levels. As the moisture is absorbed into the timber and then evaporated away, the timber starts to shrink on the outside surface, causing cupping of the boards and the eventual pulling away from the fastenings, or splitting. If constantly exposed to moisture the Cedar will discolour and start to rot.

(3) Water blasters: Our DIY cultures means that we think we can do it ourselves, but incorrect use of the water blaster will remove the protective coating and can irreversibly mark your cladding. In most cases the pressure from even a domestic water blaster is too high for safe use on Cedar timber.

(4) Poor advice: Well-meaning people offer advice on what to do. The internet contains pages of information on how to treat or not treat your Cedar. Most are not Cedar specialists and are only giving general advice. Often it is not based on our unique New Zealand conditions or the products we have available. You need specialised advice for your own unique situation.

(5) Delayed maintenance: Leaving the maintenance until it is obvious that it is needed allows damage to occur that is difficult and more costly to repair. Regular, timely, and specialised maintenance is the best way to protect your investment in your Cedar.

As specialists in the maintenance of Cedar timber we are happy to provide a no obligation assessment and give you advice on what is needed to care for the Cedar on your property.

Unprotected and Weathered Cedar
Our harsh sun can destroy the outer fibres of you Cedar. If left unprotected the sun’s UV rays will breakdown the lignin in the Cedar, causing it to grey or silver.
Cupping of Weatherboards
As moisture is absorbed into the timber and then evaporated away, the timber starts to shrink on the outside surface, causing cupping of the boards and the eventual pulling away from the fastenings, or splitting.
Incorrect use of Water Blaster
Incorrect use of the water blaster will remove the protective coating and can irreversibly mark your cladding. In most cases the pressure from even a domestic water blaster is too high for safe use on Cedar timber.
Poor Advice
Given poor advice that you can leave your Cedar untreated and let it silver or told that you can paint your weathered Cedar.
Effects of Delayed Maintenance
Leaving the maintenance until it is obvious that it is needed allows damage to occur that is difficult and more costly to repair.
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If you are not sure about any of these matters, contact us for some advice.

Learn more about what you can do to maintain the Cedar on your home by reading our article What You Need to Know about Caring for the Cedar on Your New Home.

This information has been prepared for you by Cedar Doctor NZ who have specialised in caring for Cedar on residential and commercial properties since 2005. 

If you need more information, or would like a no obligation assessment and quote for any maintenance that may be required on your home, please call us on 0800 888 091 or book a visit.  Don’t forget to ask about our maintenance program.

The information presented here is general in nature.  Since it does not take into account your unique circumstances, it may not be suitable to your needs.  We encourage you to contact us for specific advice before taking action.