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Timber board or plywood ceilings – black staining of timber

Timber boarding or plywood ceiling – clear finish is too dark

  • Old varnished or shellacked ceiling has darkened with age

    How to repair

Ceilings – timber boards cupping

  • Cupping occurs because boards are drier on one side than the other resulting in uneven shrinkage, so cupping may indicate a higher moisture level in the ceiling space or a higher moisture level in the room

    How to repair

Ceilings – timber board joints have got wider

  • Timber has dried out; building has moved; poor initial installation

    How to repair

Ceilings – timber or MDF cornices joints opening up

Timber boarding – borer infestation

Timber boarding – cupped boards

  • Cupping occurs because boards are drier on one side than the other resulting in uneven shrinkage, so cupping may be due to boards swelling if the moisture levels of internal spaces are higher than the moisture content of the boards

    How to repair

Timber boarding, veneered MDF or plywood – black staining

Timber boarding, veneered MDF or plywood – clear finish too dark

  • Old varnished or shellacked wall panels have darkened with age, or wall panels have always had a dark finish

    How to repair