Checks (Surface & End) Solid Wood

Checks

Checks

Checks

Checks

Checks

Checks

Checks

Checks

Checks

Checks

Checks

Checks

What you need to know

Checks – The USDA Forest Products Laboratory’s General Technical Report FPL-AH-188, Dry Kiln Operators Manual, Year 2001, page 180 “Chapter 8-Drying Defects” states the following:
Surface Checks are failures that usually occur in the wood rays on the flat-sawn faces of boards. They occur because drying stresses exceed the tensile strength of the wood perpendicular to the grain, and they are caused by tension stresses that develop in the outer part, or shell, of boards as they dry (ch. 1). Surface checks can also occur close to a knot, by gum pockets and mineral streaks, and in bacterially infected wood, as such wood is weaker than “normal wood.”
End Checks –  The USDA Agricultural handbook  AH-188: dry kiln operators manual, your 2001, page 182 and 183  “Chapter 8 Drying Defects” states under the subheading

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