Natural defects

Defects that occur naturally on living trees :

• Brittle heart 
• Sapwood 
• Wide growth ring 
• Spiral grain
• Upset 
• Fungal , insect damage
• Knots (live knots and dead knots ) 
• Fissures (checks , shakes , splits , resin pockets , Rind galls , Burrs , Curls)