Registered Construction Detail 3: E10 Eaves (insulation at ceiling level)

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Registered Construction Detail 3: E10 Eaves (insulation at ceiling level)

E10 Eaves (insulation at ceiling level) E10MCPF4

This junction can account for up to 11% of heat loss through thermal bridging and is a major cause of the growth of mould at the junction between wall and ceiling.

In this detail the registration number tells us it is detail number E10, that masonry has been used and the cavity has partial fill insulation.

Key areas to consider are

•    Pitch of the roof which, if shallow, can prevent full thickness of insulation being installed at the roof/wall junction. It is important to fill this void and ensure insulation is continuous with the wall insulation; flexible insulation can be dressed down into the cavity to achieve this.
•    Ensure any eaves ventilation is not blocked or compressed and so preventing adequate ventilation of the roof.
•    Where there is a habitable room in the roof space ensure the insulation is continuous.
•    Party wall junctions and ceiling detail where they abut an adjoining external gable wall.

Registered Construction Details: Helping the industry to get it right on site

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