Wood Double Hung Window Repair

Anatomy of a traditional double-hung window

Anatomy of a double hung window

Traditional double hung windows may require:

  • Complete removal of both sashes.
  • Release of tightness caused by excess paint and misalignment around edges.
  • Installation of new rope, chain, or balancer.
  • Reinforcement of all loose joints, particularly lower corners. Epoxy restoration may be needed for badly rotted joints.
  • Replacement of parting bead. It is often cracked, rotten, or warped.
  • Re-weighing the sash to make sure the counterbalance weight is correct(ed). There should be no dropping down or floating up in either sash.
  • Wax and oil lubrication of channels and pulleys which should solve squeaking and sticking.
  • Realignment of locks and stop beads. Stops are vertical strips of wood which control the bottom sash. They should be lined up to allow the sash to have just enough clearance for free movement, but not too much. When they are totally closed, they should touch the top rail of the bottom sash to keep the assemebly still. This will prevent rattling when the window blows.
  • Installation of weather-stripping if required or requested. This will also increase energy efficiency and make the window seem more smooth.
  • If the sashes are irreparable because of dry rot or termite damage, replication and installation of new sashes which will identically match the old sashes and keep the look of the house consistent.

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Your team did a great job, when they repaired 70 original, double hung windows in my historical home built in 1930. They were well trained, professional and quick.

Paulette Modiano San Pedro, CA

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