From 
Image 1 of 4
Insulating
Insulating glass seals have to withstand the onslaught of heat, cold, rain, wind and impact. All in all, they do a darn good job. But even with a failure rate of only 1 to 3 percent, there’s a good chance that at least one glass unit in your house will bite the dust.
Insulating glass seals have to withstand the onslaught of heat, cold, rain, wind and impact. All in all, they do a darn good job. But even with a failure rate of only 1 to 3 percent, there’s a good chance that at least one glass unit in your house will bite the dust.
Image 2 of 4
Water Damage
Perimeter seals can deteriorate when they sit in water; bottom seals are particularly vulnerable. Glass should be elevated up and away from the window sash (and any infiltrating water) with small setting blocks. Weep holes or channels should be included to promote drainage.
Perimeter seals can deteriorate when they sit in water; bottom seals are particularly vulnerable. Glass should be elevated up and away from the window sash (and any infiltrating water) with small setting blocks. Weep holes or channels should be included to promote drainage.
Image 3 of 4
Heat Damage
Perimeter seals can soften and panes can literally bow outward from hot air expansion between panes. Lots of expansion and contraction can actually turn windows into "mini-pumps" that pull in and push out outside air, a real problem if it’s moist air. South-facing windows are the hardest hit.
Perimeter seals can soften and panes can literally bow outward from hot air expansion between panes. Lots of expansion and contraction can actually turn windows into "mini-pumps" that pull in and push out outside air, a real problem if it’s moist air. South-facing windows are the hardest hit.
Image 4 of 4
Damage from Old Age
Perimeter seals can dry out, crack and allow moist outside air to infiltrate. Most windows today carry 10- to 20-year warranties—not bad for all the abuse they have to put up with.
Perimeter seals can dry out, crack and allow moist outside air to infiltrate. Most windows today carry 10- to 20-year warranties—not bad for all the abuse they have to put up with.
Comments :