A conservatory is defined as a building part with 50% of walls and 75% of roof glazed. Where an extension does not meet this requirement, but has a glazed roof, the new Convention will advise the following input for the building part roof:

The use of ‘no access’ will immediately remove the requirement for an insulation recommendation, as well as accurately describing the element’s insulation.

The example below would meet this requirement:

Don't forget to use 'More than Typical' glazed area!