What are the main factors to consider when choosing new windows to replace old ones in a private home?

Renting a windowless room in London for £1,250 a month may break housing regulations. First, your friend should discuss the situation with the landlord and check the terms of the contract. If he leaves early, he may be entitled to compensation. For more information and possible double glazing solutions see here: Double glazed sash windows https://scottjameswindows.co.uk/double-glazing-sash-windows/. If the landlord does not make concessions, it is worth seeking advice from a lawyer or local housing inspector.