Ask an Property Solicitor. Get an Answer ASAP.
Hello, this is Jim and I am a dual-qualified lawyer (UK and Republic of Ireland) and happy to help you this evening.
Yes, you do have a right to ask for the guarantees - you have up to 6 years to sue the builder for faulty workmanship and the time period starts from the date the leak occurred.
When was it first noticed?
No problem, thanks - I will be available