Larch heartwood has been promoted in Sweden and in other European countries as an alternative to preservative treated timber. It has even beeen stated that larch heartwood is more durable than preservative treated timber. This paper presents a compilation of facts from scientific reports on the durability of larch heartwood. Some recent data from this department are also reported. All data suggest that the durability of larch heartwood is variable, ranging from not durable to moderately durable. No data supports the view that larch heartwood would be durable or very durable. The claim that larch heartwood is as durable or more durable than preservative treated timber could not be confirmed.

Download document (442 kb)
free for the members of IRG. Available if purchased.

Purchase this document