Historic Windows

Energy efficiency—is it everything it promises?

In 2012, the Federal Trade Commission charged five companies that sell and make replacement windows with deceptive energy efficiency and cost savings claims.²

Policies and funding may promote replacement over repairs despite what research has proven to be the most effective and economical.

“Green”—is definitely not sending repairable windows to the landfill while replacing them with vinyl windows that are not likely to last more than 35 years!

30% of our landfills are construction waste.

Be wary of anything “Maintenance Free”; it often means it cannot be repaired and will end up in the trash.

80% of current window business done by window replacement contractors is replacing windows that are only 15-20 years old.

Simple ways to start decreasing window drafts:

• ♦  Caulk any gaps or cracks around the window
• ♦  Apply weather stripping
• ♦  See Preservation Green Lab study for more information (link below)

Additional ways to reduce drafts without replacing your historic windows:

• ♦  Storm windows
  • ◊  Interior storm windows
  • ◊  Exterior storm windows
    • −  Be sure to check with the Community Planning and Building Department for any necessary permits and approvals.
    • −  Custom-made storm windows can be purchased—they are low profile and are made to fit the dimensions of the window (even if its corners aren’t “square”).
• ♦  Insulating cellular shades

Reglaze windows – Easier to do than you might think!

Basic wooden window restoration (re-tie weights, repair stops and sash) can be done by most dedicated DIY homeowners. It just takes time. (Window restoration specialists can also be hired to complete the work.)