What is a double-hung window, and is it right for your home?

Double-Hung Windows History

A double-hung window is one of the most popular replacement window styles chosen by homeowners. Some of the oldest sash windows are dated as far back as 1670 in England. Double hungs have the Georgian and Victorian-style house look -- the style most people think about with replacement windows. The term "hung sash window" is most common in the United States, referring to "double-hung windows.”

Double-Hung Windows Facts

  • The double hung has two operating sashes -- movable parts that slide vertically up and down, held in place by a window frame.
  • The sashes tiltin for easy cleaning.
  • Double-hung windows offer the ability to open both sashes, allowing good air flow.
  • Double hungs are usually made of wood, vinyl, aluminum or and composite. The most energy-efficient and maintenance-free choices are vinyl windows and composite windows.
  • Some of the most important considerations that add value to double-hung windows are: if they incorporate Low–E glass and achieve low U-value ratings; whether they are ENERGY STAR certified (energystar.gov); what type of air infiltration and Design Pressure (DP) ratings they achieve; and whether they are Gold Labeled by AAMA (www.aamanet.org).
  • Double-strength glass, triple-pane glass, and laminated glass are all features that will help with sound transmission – keeping exterior noises out of your home.
  • Additional features to look for are: high-performance glass systems with MagnaSeal™ Spacer (a thin wall spacer designed with bent corners to create an impermeable metal barrier that resists condensation and increases durability); reinforced meeting rails; air and water barriers built into the sill design; and sleek-looking locks. Double-hung windows also come with half and full screen options.
  • Double hungs are available for both replacement window and new construction window applications -- with nailing fins and J-channel for siding, brick and stone installations.
  • Impact windows are available in the double hung window style for areas that require hurricane windows.
  • Overall, vinyl double-hung windows have the ability to retain their beauty, continue to offer thermal efficiency benefits, and last generations with minimal maintenance.
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