Insulation/ventilation of loft

Alter_ego

We live in a recent build (2016) Brick built with imitation slate pitched roof. While sorting out and increasing loft insulation I noticed the eaves are full with insulation. Investigating a bit further I found the gaps between rafters are closed off with some sort of cement board (or similar) and the outer ends of the rafters exposed (Painted black) There are no barge boards or soffits. Is this a normal construction nowadays? Does the loft not need ventilation?

Thanks for any insight into modern roof construction.

Bendy_House

Yes, it needs ventilation.

When you look at your roof from particularly the outside, do you see some funny things on it, and perhaps along the top ridge, that could be vents?

Alter_ego

Thanks bendy, I'll check

DougMLancs

Just a thought, if they fitted an air open, vapour permeable membrane under the tiles like those from Klober then additional ventilation isn’t always required although is often still recommended.