English Pippy Oak Sawn Timber
English forests produce the finest pippy oak in the world. The open nature of our woodlands, hedgerows and parks allows easy light penetration which encourages ‘epicormic growth’ on the main trunks of the trees. These growths, which look like tumours on the outside, can sometimes consume the whole trunk, creating one big ball of burr. The growths penetrate deep into the heart wood of the tree and when cut perpendicularly to the direction of travel, they appear as cat’s paws or patches of burr on the board.
Waney edge boards of English pippy oak will be supplied with wane (bark) on one or two edges.
Pippy oak, sometimes called ‘cat’s paw’ oak, is so named because of the frequent small knots and knot clusters which pepper the board. Large knot clusters are generally referred to as ‘burrs’ and boards with a high proportion of these large clusters are described as burr oak.
The heart wood of English pippy oak ranges in colour from pale straw to dark honey brown. The grain moves around the knots and clusters to create beautiful wild patterns and figures which are highly prized by fine furniture makers.
We cut English pippy oak to achieve as much interest and beauty as possible. The majority of the pippy logs will be ‘flat cut’ (parallel to the growth rings) so that the epicormic growths are presented as pips and burrs on the surface of the board and the growth rings patterns are also visible.
To avoid disappointment please make an appointment before arriving at either yard to select sawn timber.
|Common name||English pippy oak|
|Unit of sale||M3 (Cubic meters) (1M3 = 35.315 Ft3)|
|Kiln dried weight||Approx 720 KG / M3|
|Specification||Supplied in waney edge sawn boards
Width range 200mm – 350mm +
|Durability||BS EN350-2. British oak is classed as durable and does not require treatment for external use, as long as the sap is excluded.|
|Workability||+ Generally works well. Liming & fuming possible
– Contains tannin. Curly grain can cause furring
||Pippy oak is available in the following grades but please note that not all thicknesses are available in all the grades:|
At least two thirds of each board will include a light covering of small knots and knot clusters. The majority of the boards will be free of any large knots and defects.Accepted: Small knots and clusters, curly grain, sap, isolated worm holes, larger defects and heart split with a reduction in volume.Not accepted: Rot, black stain, ring shake, bark pockets, excessive worm attack.
This is our standard grade of English pippy oak. There will be a distribution of pips, cat’s paws and small burrs across at least two thirds of each board. Occasional larger sound knots up to 80mm are accepted. Other isolated defects including larger knots and heart split will be measured out.Accepted: Small knots, cat’s paws and small burrs, curly grain, sap, isolated worm holes, larger defects and heart split with a reduction in volume.Not accepted: Rot, black stain, ring shake, bark pockets, excessive worm attack.
|Heavy pippy / burr
This grade is selected to include the greatest density of cat’s paws and patches of burr. In the most extreme cases the burr patches may span the entire width of the board. At least two thirds of each board will be covered by either a high density of cat’s paws or individual large patches of burr.Accepted: Cat’s paws and burrs, curly grain, sap, isolated worm holes, larger defects and heart split with a reduction in volume.Not accepted: Rot, black stain, ring shake, bark pockets, excessive worm attack.