Rotted Windowsill … Tip of the Iceburg ?

Rotted Windowsills may be the greatest home repair cost because the damage may not end at the sill. Damage can go as far as the studs, the floor joists and even the main plate of the home that lies on the foundation wall.

  • An early sign of wood rot is paint blistering or peeling from the surface.
  • Hot and cold temperatures expand and shrink the wood, causing cracks in the paint. Cracks allow more moisture under the paints surface.
  • The same paint which is used to seal and protect against moisture, now prevents the wood underneath from drying out.

Do it Yourself Tip: How to Repair Wood Rot

  • Use a wood chisel, electric drill with spade bit, or another tool to remove all wet loose and unsound wood…
  • Mix two-part wood filler as directed. Mix only what you can apply in a few minutes. Once the material hardens, you must throw it away.
  • Fill the hole or build up the affected area with the wood filler, using a putty knife or flexible plastic spreader. Press hard to work the initial layer into the surface for a strong bond.
  • Clean off the applicator and mixing container immediately.
  • Use a rasp tool to roughly shape or level excess filleras soon as the filler sets up, but before it dries completely
  • Use medium or coarse sandpaper to further shape the patch when the filler is completely dry.
  • Blow off the dust and apply freshly mixed filler to fill any remaining depressions or pinholes, or to build up more material as needed to attain the desired shape.
  • Use medium, then fine sandpaper to smooth the patch and feather it into the surrounding wood.
  • Touch up the patched area with primer and paint.

Things You’ll Need

  • Wood Chisel or Electric Drill With Spade Bit
  • Awl
  • Drill and Bits
  • Mixing Container
  • Epoxy or Polyester Wood Filler
  • Wood Filler
  • Putty Knife or Plastic Spreader
  • Rasp Tool
  • Sandpaper
  • Primer
  • Paint and Paintbrush

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