Timber ID’s and Moisture

Timber species identification (ID’s) may be required for a number of reasons which include:-

  • Being able to match new timber with existing timber in use
  • For heritage protection requirements
  • To enable the timbers properties to be identified including ratings for strength, durability, bushfire resistance, insect and termite resistance and much more.

Identification can be as easy as a quick visual assessment for some of the more common, easily identifiable timbers, through to a more detailed investigation using microscopic techniques. Difficult to identify species include many of our native hardwoods, imported hardwoods (rainforest species) and other exotics.

Whichever the case we can undertake ID’s.

Moisture Content (MC) determination services can be provided on-site or off site.

On-site MC’s are typically estimated using moisture meters (resistance or capacitance) that are calibrated and with readings adjusted to account for species, temperature, etc. Meter readings typically have accuracies of +/- 2 to 3%.

To determine definitive MC’s requires use of the oven dry method where samples of timber are taken from site, weighed and then dried in an accurate temperature controlled oven for 24 hrs or longer. After the samples have reached zero moisture, they are then re-weighed and the original MC determined. Oven dry testing should be carried out in accordance with AS 1080 and the procedure for selecting, handling, wrapping and delivery of the samples for testing is critical to achieve an accurate outcome.

If you require an ID or MC service, we are happy to provide the specific advice required for the particular situation.