Paulownia
is an extremely fast-growing, soft
hardwood native to China, predominantly plantation grown.
The heartwood is light in color and its appearance
closely resembles American Ash. The demarcation between
heartwood and sapwood is not clear and the wood is
straight grained and lustrous. Paulownia is surprisingly
light in weight for a hardwood. In fact the physical
weight is slightly less than kiln dried western red
cedar. It is low in overall strength, but has high
strength to weight ratio – physically it ranks
between balsa and poplar. The wood dries rapidly and
does not easily warp, cup, end check, splinter or split
and has a very small shrinkage coefficient.
Paulownia has one
of the lowest thermal conductivity
values of any wood; therefore the wood has very high
insulation properties. Compared to most woods, Paulownia
has a high resistance to fire and a high ignition point.
The wood is not generally affected by high humidity.
It is naturally decay resistant and any rot is generally
superficial. The wood is also naturally resistant to
insect attack. Paulownia has no measurable pitch, resin
or tannins so it is not subject to extractive bleeding.
This wood is
easy to work with – easy
to plane, sand, saw, rip, route and carve, and even
in quick processing there is no danger of splitting
or chipping. It easily absorbs glue, paint and stains.
Paulownia is commonly used for drawer sides, drawer
bottoms, cabinets, as well as mouldings, flat jambs
and trim boards.