Refurbishment Solutions - Kingspan Insulation - Kingspan Group PLC

Warm pitched roofThis particular system will require removal of the existingslates or tiles and therefore may only be feasible when theseneed to be replaced as part of the remedial works.Tiles/slatesTile/slate battensWarm pitched roofInsulation to required thickness (see chart below) is fittedbetween and over the rafters which is then overlaid with abreathable membrane. A minimum 25mm airspace should beprovided immediately over the breathable membrane toensure adequate functioning of the membrane and to allow adrainage passage under the tiles/slates. This is achieved byfixing counter battens along the line of the rafters.This system is also known as a ‘non-ventilated’ roof astraditional ventilation at eaves and ridge is not required. Careshould be taken at wall/roof junctions to ensure continuity ofthe insulation and airtightness.DoTake care at wall and roofjunctions to ensure continuity ofthe insulation and airtightness.Don’tUse standard sarking felt forthis application.Kingspan nilvent ®Breathable Sarking MembraneKingspan Kooltherm ® K7Pitched Roof BoardExisting rafters12.5mm Plasterboard38 x 38mmcounter battenUnventilated air spaceWarm pitched roofWarm Pitched RoofABCDEFGU-Value (W/m 2 K)0.120.140.160.200.270.450.87Insulation between raftersOver rafters120mm Kooltherm K780mm Kooltherm K780mm Kooltherm K780mm Kooltherm K770mm Kooltherm K770mm Kooltherm K760mm Kooltherm K750mm Kooltherm K740mm Kooltherm K740mm Kooltherm K740mm Kooltherm K7n/a16 Kingspan Refurbishment SolutionsKingspan Refurbishment Solutions 17