![]() Interior storm windows are therefore usually considered temporary measures.Īnother possible cause of leaks may be a poor seal between the operable and fixed portions of the frame. However, such installations tend to render formerly operable windows inoperable and may result in condensation problems if not carefully designed and installed. To protect against leaks and drafts, an additional layer of glass - a "storm" pane - may be added at the building interior. If deterioration is limited, such that the window is still structurally sound, it may be possible to retrofit the existing assembly, rather than replace it. ![]() During installation, correct placement of sealant is important, both to ensure adhesion and to avoid blocking voids in the frame that allow moisture to exit the assembly.Īir and water infiltration through windows may also be the result of aging frames, which have developed cracks at welds and stress points. ![]() Although less expensive in the short term, this repair method creates an ongoing maintenance issue, due to the relatively short life expectancy of sealants. Where gasket replacement is not feasible, an alternative option is to cut out the top of the existing gasket bulb and apply elastomeric sealant. Because of the age of some windows, replacement gaskets may no longer be available. To install new gaskets may require removal of glazing, which is both disruptive and labor-intensive. Because gaskets age better than sealants, gasket replacement is the preferred long-term solution. One option is gasket replacement, which involves removal of the existing perimeter gasket and installation of a new one. Even if gasket deterioration is systemic, the windows may not have reached the end of their service life there are options available to address failed gaskets without replacing the windows. Often, leaks in the window assembly are caused by deteriorated gaskets, which are neoprene or butyl rubber seals that cushion the glazing and provide weather protection. Air and water can also infiltrate through, not around, windows. ![]()
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