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The answer is no, absolutely not! It’s not like we doubt your expertise, it’s just that we don’t want you to miss out on any still-applicable guarantee or installer after sale support team.
There could be multiple reasons behind damaging double glazing windows; the most common cause is wear and tear due to time. If you’re observing anything unusual about your double-glazed windows, reach out to your installer right away.
If still covering the warranty support, then you are likely to enjoy complete coverage for the repair.