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Keruing

Specification

Illingworth Ingham (M/cr) Ltd is a leading supplier of Keruing in the UK.

Appearance

  • Colour – Sapwood is greyish-brown and distinct. The heartwood varies from light red to reddish-brown or brown, darkening on exposure.
  • Grain – reasonably straight with occasional interlocking.
  • Texture – Moderately coarse but even.

Characteristics

  • Strength – Keruing generally compares with teak in most strength categories, but it is a little stiffer, and about 40 per cent more resistant to shock load.
  • Weight – High – about 720 kg/m³. Density can vary by 20% or more.
  • Ease Of Drying – dries slowly. Difficult to achieve uniform drying particularly in thick stock. High temperatures aggravates the release of resin so care is needed to reduce this to a minimum and also to reduce the tendency for cupping to occur. There is a high shrinkage during drying and a corresponding high movement potential.
  • Movement In Service – Medium
  • Preservative Treatment – Difficult

Working Properties

  • Keruing can be difficult to work with without the correct cutters/tooling.
  • Nailing – Reasonable
  • Screwing – Reasonable
  • Gluing – Variable

Finishing

  • Varnishing and Polishing – Requires a lot of care due to resin
  • Staining – Satisfactory