English Pippy Oak Sawn Timber

Pippy oak is available in the following grades but please note that not all thicknesses are available in all the grades:

Light pippy

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.

Pippy

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.

Oak contains tannic acid which will corrode ferrous metals. When the two come into contact, a blue sludge is formed which will stain the oak.

The ambrosia beetle can attack wet timber (at 30% moisture or more). However, the beetle will die as soon as the wood dries to less than 30%. Re-infestation will not occur. Other dry wood will not be affected.

All fixings used in conjunction with green oak should be stainless steel.

Surface spread of flame class 3 (BS 476-7)

While the utmost care has been taken to provide accurate information, Vastern Timber shall not be held responsible for any consequences arising from any errors or omissions on this website nor for any damages resulting from the use of the information.