Specialty Timbers New ZealandKawa poplar timber - properties and market opportunities
Report Date: August 2023
Author: Dean Satchell, Northland Regional Council
Contact Dean: 021 2357554
Kawa poplar - thermal modification
Thermally modified Kawa poplar received back from Tunnicliffe Timber
General appearance of the thermally modified poplar
All knots checked, even small ones
Spike knot showing checking
Cupping in thermally modified Kawa poplar
Straight lines in black marker showing level of crook sometimes seen
End splits in thermally modified Kawa poplar. The extent of these was not measured before and after thermal modification
Knot checks appeared to increase from the thermal modification process
Distortion resulting from the themral modification process
Crack in thermally modified timber. The extent
Knot checks
Knot checks
Split where the pith was included in this board
Crack showing depth
Skip caused by cupping
Skip caused by cupping and distortion around a knot
Splitting 50mm thickness timber for a bandsawn face on weatherboards
Thermally modified shiplap weatherboards
Thermally modified shiplap weatherboards
Knot check in weatherboard face
the same knot check on the other face
Water-based polyurethane coat on thermally modified Kawa poplar
Disclaimer: The opinions and information provided in this report have been provided in good faith and on the basis that every endeavour has been made to be accurate and not misleading and to exercise reasonable care, skill and judgement in providing such opinions and information. The Author and Specialty Timbers New Zealand will not be responsible if information is inaccurate or not up to date, nor will we be responsible if you use or rely on the information in any way.
