Hi there
We are putting a single storey extension on the rear of a property and as a result the existing dining room now has no windows or doors that open to external air, they open onto the new extension instead.
Therefore, I was wondering what ventilation needs to be specificed to comply with building Regulations without the need for a mechanical extract fan with 15 minute over run. And where is it best to put this ventilation.
Many thanks
We are putting a single storey extension on the rear of a property and as a result the existing dining room now has no windows or doors that open to external air, they open onto the new extension instead.
Therefore, I was wondering what ventilation needs to be specificed to comply with building Regulations without the need for a mechanical extract fan with 15 minute over run. And where is it best to put this ventilation.
Many thanks
