Hi I was hoping for a bit of advice. Having spent over £6.5k getting 22 sash windows reconditioned/replaced, draught proofed and decorated I have noticed that in very high winds some of the windows whistle. Generally they are sound but a small number of them are clearly not well sealed. They are the original windows and are about 120 years old. Is this something that I have to live with or should I contact the joiner who did the work and point this out to them. It only happens when it is very windy like it was in the North today. What are my next steps, any advice would be much appreciated. Cheers Sam.