Short and Long Term Effects of Improper Storm Window Installation Short and Long Term Effects of Improper Storm Window Installation

storm window is at its best when installed tightly. This is one of the more important things one should consider according to the S.C. Department of Consumer Affairs when it comes to storm window installation. This means that the window should have no cracks or gaps in order to prevent air from getting through. Its efficiency is beset experienced when the storm window fits the frame of the window fully.

In addition, if a storm window is properly installed, it can save you a huge amount of energy. Should you need to improve the efficiency of its heating and cooling systems, you can certainly stay away from paying high electric bills. The treated aluminum or the baked enamel frames are the best combination models to choose from since they are hard-wearing and require minimal maintenance. However, if storm windows are not properly installed, several short and long term effects can be expected. So what are these effects and how do you treat them?

Heat Loss

Take note that most of the increased thermal resistance is due to the air space provided and not due to glazing. On the other hand, due to the increased temperature of the inner glazing, reduced condensation and icing are experienced. Thus, when purchasing storm windows, undergo careful thought because these products represent a major, long-term investment.


Heat loss can be decreased if an additional air space of at least 12 mm (1/2 inch) is provided for a storm window from a single glazed window by roughly 50%. Both the materials and the construction can be exceptional, but the installation process should be equally excellent as well. Otherwise, your intention to reduce heat loss will not work effectively as one of its short term effects.

Air Leakage

Another unwelcoming long-term effect of improper storm window installation is the increased of air leakage. This happens when both permanent and storm windows are not sealed very well.


Sealing the inner layer of glazing tighter than the outer is the most appropriate way to treat air leakage. Otherwise, warm moist air will leak between glazing and condensing on the inner surface of the outer glazing. In order to reduce air leakage and increase durability, interior application is superior. Condensation can also be reduced between glazing layers with a tight seal to the interior. Depending on your purpose, you can also install removable interior or exterior storm windows. These are best if you wish to have the window as a source of ventilation or as an emergency exit in times of unwanted occurrences.

Storm windows come in a variety of units, including permanent or removable. Improving the thermal resistance of windows is their main function and not just to prevent air leakage. When purchasing exterior storm windows, it is important to consider the needed ventilation, the prerequisite emergency exits, maintenance and appearance. Furthermore, in order to avoid the downside of improper installation, hiring a qualified contractor is a must.

Got a New Project You're Proud of?

Post it on Your Projects!