A comprehensive guide to the most common timber terms from A to Z.


  • Back sawn timber

    Timber that is sawn so that the growth rings are inclined at less than 45 degrees to the wide face.

  • Baffle

    A rigid or flexible barrier used to direct and control the flow of air.

  • Batch

    In drying, a group of timber with similar drying and product characteristics.

  • Beam

    Structural member, other than a triangulated frame, which supports load primarily by its internal resistance to bending.

  • Bearer

    A sub floor timber beam placed across piers or stringers and supporting floor joists

  • Berm

    An artificial ridge of earth

  • Bevel

    Any angle not at 90 degrees. Also, a tool for marking such an angle.

  • Biodeterioration

    The breaking down of timber by natural or biological agents such as fungi and insects.

  • Biodiversity

    Biodiversity is the variety of all life forms: the different plants, animals and micro-organisms, their genes and the ecosystems of which they are a part. Biodiversity underpins the processes that make life possible.

  • Biota

    All living animals and plants

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