This keeps coming up and so to clarify the situation again:
Window Repairs and Maintenance
All of the windows are owned by the freeholder, not individual lessees.
However, a quirk in the leases in regards to the large windows on the river side of the building means that owners are responsible for the opening part of the windows, and the freeholder for the fixed part.
Therefore:
If one of the FIXED glass panels in your windows needs replacing it is the responsibility of the freeholder, and you should contact the managing agent to arrange the work.
If the SLIDING part needs attention, whether for replacing glass or servicing/replacing rollers, locks or seals, then it is your responsibility.
In this case we suggest you contact a company called DMC who have carried out work on many of the windows in the building in the past:
tel: 0208 507 9306
office@doorwaymaintenance.com
You are of course free to use anyone else if you prefer.
Window Replacement
A question regarding replacing windows has also come up.
As the windows are owned by the freeholder it is not permitted to replace them without a Licence to Alter. Doing so without a Licence is a breach of the terms of your lease.
In addition the replacement of a window constitutes notifiable work under the Building Regulations. As the building exceeds 18 metres in height, this work cannot be self-certified by trade bodies such as FENSA but requires consent from the Building Safety Regulator. This must be obtained by the owner prior to the commencement of any work.
Carrying out notifiable work without the prior consent of the BSR is a criminal office under the Building Safety Act 2022, and RPFL, as Principal Accountable Person for the building, are required to report any such occurrence to the BSR.
A Licence to Alter will not be issued without this consent being in place.