The overall grade is defect free and similar to
American White Oak except that it has the distinct advantage of being
practically sap free.
1) Quercus petraea/sessiliflora
(2) Quercus robur/pendunculata
Commercial names: Native/English, French, German Oak etc., according to
country of origin. (1) Sessile or Durmast Oak (2) Pedunculate Oak.
Other names: Rovere, Quercia (Italy); Chene (France); Eiche (Germany); Eik
Distribution: UK and Europe.
General Description: The heartwood is light tan
to biscuit coloured, usually straight grained, but irregular or
cross-grained material can occur depending on growth conditions.
Characteristic silver grain figure on quartered surfaces due to broad
rays. Our Native oak is tough and hard with more apparent mineral stain in
the grain compared to the French and German oaks. Native oak is slightly
heavier weighing 720 kg/m3 (45 lb/ft3); specific gravity 0.72. Whereas the
French and German oaks are slightly lighter in weight at 670 kg/m3 (42
lb/ft3); specific gravity 0.67.
Mechanical Properties: Oak has a very good steam bending
classification, but is liable to blue stain if in contact with iron
Working Properties: There is a moderate to severe blunting effect
on cutters, which should be kept sharp. Quartered stock requires a 20°
planing or moulding angle. The wood takes waxing, liming, fuming and
polishing treatments very well.
Durability: The heartwood is durable and extremely resistant to
preservative treatment, but the sapwood is permeable. The acidic nature of
oak will affect metals in direct contact and cause corrosion. Non-ferrous
or galvanised metals should be used.
Uses: The preponderance of tyloses in the pores of “white oaks”
resist the passage of liquids and renders the wood ideal for tight
cooperage for cognac, wine and beers. For furniture, cabinet making, boat
building, dock and harbour work, sea defences, railway wagons, ladder
rungs, sills, thresholds, and for all purposes of exposure in contact with
the ground. High class joinery, coffins, ecclesiastical work such as pews,
rood screens, pulpits and carvings. Flooring, vehicle body bearers and
floors in trucks. Beams are produced from selected logs for restoration
work in old buildings.