Extensions

Who is responsible for the Air brick extension pipework under new concrete floor in extension?

Anonymous user 28/02/2024 - 3.31 PM

Good afternoon, I'm hoping somebody may be able to help on my matter as I'm struggling to get the necessary guidance I need. We have recently had an extension built at our house. My house has a suspended floor with a cavity but that was replaced in the extension with a concrete block floor. However, in the part of the house where the cavity remains I have noticed a musty, stale smell that is getting worse. I have had the chimney swept so there is nothing in there so it is coming from under the floor, the cavity. My question is; has the concrete floor removed the airflow under the house as the airbricks at the back of the house have been removed? Should this have been considered/ rectified before the floor was poured? I am now worried I am getting damp under the original parts of the house hence the smell. What is the usual way to deal with this scenario during an extension? And who should have noticed this and taken responsibility, the builder or Building control company? Thanks very much any help is greatly appreciated.