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How to replace weatherboards

Updated February 21, 2017

Weatherboards have been used throughout the centuries to cover the exterior of many dwellings. They serve to keep the walls watertight while allowing air circulation beneath the surface. Sometimes weatherboards become damaged, either by rot or wind. Whatever the cause, it is necessary to replace any area not serving its purpose.

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  1. Make a pencil mark just below the original weatherboard across the entire distance of the board. This will be your reference mark that will help you realign the new weather board.

  2. Release the surrounding weatherboards. The boards directly above the weatherboard you are removing will be partially attached to the damaged board. Slide the flat bar underneath the board above and gently work loose. Remove the nails from the board above once they work loose (see the attached drawing for a demonstration on this step).

  3. Pry the old weatherboard loose. Once you have loosened the board above the board to be removed, you may now pry the damaged board away from the wall. Simply slide the flat bar under the bottom of the board and pry it loose. Be careful not to damage the surrounding boards.

  4. Measure the old board. If the old board is not removed in one piece, measure the slot where the board came from; otherwise, use the board you removed as a template for marking the new board.

  5. Slide the new board into place and secure with 65 mm galvanised siding nails. Caulk the joints where each piece of siding meets and apply primer and paint.

  6. Warning

    Be careful when using power tools Always wear eye protection

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Things You'll Need

  • Weatherboard
  • 65 mm galvanised siding nails
  • Hammer
  • Flat bar
  • Circular saw
  • Carpenter's square

About the Author

Specializing in hardwood furniture, trim carpentry, cabinets, home improvement and architectural millwork, Wade Shaddy has worked in homebuilding since 1972. Shaddy has also worked as a newspaper reporter and writer, and as a contributing writer for Bicycling Magazine. Shaddy began publishing in various magazines in 1992, and published a novel, “Dark Canyon,” in 2008.

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