Pitched Roof Insulation Details

As this requires fitting insulation above the rafters the roof covering will have to be removed in order to fit the insulation.

Pitched roof insulation details.

Ventilation vapour control and insulation to provide adequate ventilation and to avoid condensation in roof voids pitched roofs that have insulation at ceiling level should be ventilated to the outside air. When it comes to pitched roofs however adding a thick layer of insulation to the rafters can result in a depth of roof construction that may not suit every site meaning over rafter insulation sarking only is not a viable option. Ventilation openings should prevent the entry of birds etc. Fabrications with 3mm 10mm openings are acceptable.

Pitched roof actis products are suitable for pitched roofs providing the complete package combining breather membrane vapour control layer and insulation. To create a warm pitched roof insulation such as kingspan kooltherm k7 pitched roof board should be fitted between and over the rafters. Insulation is effective within the pitched roof but a strong fabric performance means the design and installation extends beyond the u value and thicknesses of celotex.