No boards in this roof. Lath was fitted between the rafters, vents left clear, and the insulating lime-cork-clay plaster was applied straight onto it.
An Argatherm and Argacem Ultrafine top coat finishes it. The whole roof is insulated in natural, breathable materials and the rafters stay exactly where they were.
Roof rafters, vents before insulation
Lath being fitted between rafters
Insulating lime plaster being applied onto lath
Application of Argatherm and argacem Ultrafine top coat lime plaster onto lath between rafters
Listed building roof fully insulated with natural, breathable materials
Where there is no room for boards and no appetite for covering the structure, plaster can be the insulation.
