Laying fiber cement slate. Roofing

Roofing contractors laying fiber cement slate

[@geoffsygroveroofingcontrac4654]

Parting wall insulation i would of thought

[@Tiefsee8]

Schönes Dach 👍 aus welchem Land kommt ihr?

[@revski1979]

Thanks . Uk 🇬🇧 🙂

[@Mt3Dpdrtk]

What are the red things between the battens ?