Your windows and doors should effectively last around 30-35 years. However, as with most things, this can’t be guaranteed if they aren’t correctly maintained. Not keeping an eye on their condition can lead to premature and expensive replacements. Failure to correctly maintain windows can result in sealant (caulking) failure. Sealant failure will lead to moisture entering the cavity and cause damp and damage to the surrounding areas. There’s a number of ways that your sealant can become faulty but if it’s fixed…