window glass warranty 5

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Homeowner frustration with window seals is one thing; a failing warranty is another. That twenty-year glass coverage you thought you had often excludes the very problems that show up—edge seal leaks and thermal stress cracks. Before filing a claim, dig out that original paperwork. Most warranties require professional installation records and specific cleaning methods to remain valid. One contractor told me he sees claims denied because owners used vinegar-based cleaners, which degrade the low-E…