Seven years ago we bought double glazed windows and doors from a reputable firm, with a ten-year guarantee on materials and five years on labour. The front door changed colour and the firm fitted new panels, but the door has now started to leak. The firm says it is prepared to come back again but will charge us £40 “as per contract.” Surely we shouldn’t be charged since the leak was caused by faulty workmanship?
These firms often have a call-out fee on warranty claims which is refundable if the problem turns out to be indeed covered by the warranty. Check your contract but in principle you’re right: the new panels should carry the same guarantee as the original units. Try to reach a compromise, since it’s not an amount to take legal action over.