Examining The Advantages & Disadvantages Of Single & Double Hung Sash Windows

Duble Hung Sash WindowSo far this series of replacement window guides have concentrated on the advantages and disadvantages of some of the main types of replacement windows, including basement, awning, bay and casements.

In this replacement window guide article, we will look at some of the main disadvantages and advantages of single and double hung windows, otherwise known as sash windows.

Sash windows, as mentioned above, come in two main types which are known as the single hung and double hung units. The terms “single” and “double” in this instance refer to the sash or movable section within the window which allows air and ventilation to enter the room. A single hung window has a single movable sash, in contrast a double hung window has two movable sashes.

Sash windows were traditionally made from a wood frame with single glazed panes, however since the advent and importance of energy efficiency these are most commonly seen now with vinyl frames and double or triple glazing.

Sash windows are more complex in their design that other window types such as casements or awnings, for this reason when they fail they usually cost more to repair, this is particular true of double hung variety.

The Advantages Of Sash Replacement Windows

Next to casement windows, sash windows are probably the next most popular type of replacement window you could consider buying for your home. Many of the advantages include:

  • Being easy to clean and maintain
  • Having high energy ratings and efficiency
  • Being air conditioner friendly
  • Add that traditional curb appear

Easy To Maintain And Clean

Because many of the most popular types of window open outwards, this makes them hard to clean. However, the more modern sash window sashes can open upwards but also swing inwards, this means that the window can be cleaned quickly on the inside and outside from the comfort and warmth of your home.

High Energy Ratings & Efficiency

Sash windows are known to be very energy efficiency, there are also several options which can be added to a window to make them more efficiency, this is even more true with sash windows than with any other. In particular, quadruple weather proofing, which is most common in sash windows, provides a tight seal and prevents unnecessary heat loss in the winter and heat gain in the summer.

Air Conditioner Friendly

One of the big disadvantages of casement windows is that they can’t easily accept the installation of an air conditioner into them or even screens, due to the way they open. However, sash windows don’t have that problem and can easily have an air conditioner installed into the top sash.

Add Curb Appeal

There’s no getting away from the fact that sash windows look good, in fact they look great and they can “make” a traditional home look traditional again whilst still being energy-efficient.

The Disadvantages Of Sash Replacement Windows

Sash windows are a window type with the least number of disadvantages associated with them, in this replacement window guide article we’re only outlining two main ones, since those are the only two worth mentioning. The main disadvantages include:

  • Having limited ventilation
  • Having air leakage

Limited Ventilation

Unfortunately, due to the way in which sash windows open, they don’t provide as much ventilation as casement or awning windows. The main reason for this is that you can only have a single sash fully open at any one time, that means that half the amount of air and ventilation will enter a room in comparison with other window types. However, by choosing an Energy Star rated window you can’t really go wrong as it will still meet the requirements set out by the U.S Department Of Energy and the NFRC.

Air Leakage

Whilst we mention that sash windows can prevent unnecessary heat loss and heat gain more than other windows, this is only true for those which have the quadruple weather proofing installed into them. The windows without this specific weather proofing may in fact be less energy-efficient than other window types, such as the casement window. It’s easy enough to have this weather proofing added to your windows before they’re installed, but it will cost you more than if you don’t have it installed.

The next article in our series looking at the advantages and disadvantages of the main window types will examine bow windows. In the meantime don’t forget to check out the rest of the articles in this series by scrolling to the bottom of this page.

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