Why Is Air Not Good for Double Pane Windows?

Moist Air

• Cracks or gaps in the walls around the window pane allow air to pass freely. If the air is humid or very moist outside, the air – which of course collects in between the panes – creates condensation, which fogs the window and cuts down visibility. Over time, the collected condensation creates enough water that will deteriorate the material used in the frame or the wall around the window opening itself. This contributes to dry rot or increases the potential for mold growth unless the situation is addressed.

Cold Air

• Besides potentially damaging the frame, the windows themselves, which were installed as a cost-effective measure to reduce heating costs, won’t be able to perform properly if unusually cold air is trapped in between the double panes. Double-paned glass works by having the sun warm air that has been trapped within the panes. This serves to keep warm air inside the home when outside temperatures favor the chillier side and to keep warm air out to keep the home cool in warmer months. Whether it’s moist air or cold air, the advantage of double-paned windows is lost unless the “bad” air is removed and prevented from returning in between the panes.

Closing the Gaps

• Luckily, there are ways to deal with gaps in and around the frame. An inspection around wooden frames will reveal any cracks or damaged wood that can be replaced with either new wood or replaced altogether with metal framing. If the framing looks in relatively fine condition, the gaps more than likely are between the frame and the wall. These gaps can be closed off and sealed with quick drying cement for brickwork or silicone sealant for other types of wall material.

Gas Remedies

• Certain inert gases exist that replace air in between the panes and excel at trapping heat. These gases, including carbon dioxide, krypton and argon, are pumped into the airspace, causing trapped air to be pumped out. They are considerably denser than air, thus they create a “cushion” that absorbs heat. Generally, window specialists carry these gas products.