Insulating Listed Building Roof

Building regulations for insulating a roof heat rises and therefore the building regulations requirements for heat loss through roofs are more stringent than those for walls.

Insulating listed building roof.

Grade i and grade ii listed buildings can be more difficult to alter and upgrade but luckily that only covers approximately 8 of homes in the uk today. Insulate your property 1 insulate your property. Insulating roofs in historic buildings this page provides advice on improving the thermal performance of various forms of roof by adding insulation. Fitting insulation in the loft is a good place to.

It must be remembered that just because a roof space is insulated and the floor boarded it does not mean that the room can be considered a habitable room for a full conversion of a roof space building regulations must be met which includes suitable fixed access not a loft ladder lighting etc. Most building codes require a minimum of 1 sq. Of attic floor area. Older buildings can have a wide variety of roof forms and materials often within a single building each of which may require a different technical solution.

Grade ii listed buildings can be insulated with all sorts of materials including the incredibly effective spray foam insulation. About 25 of heat is lost through a typical roof. The limiting u value the maximise u value which cannot be exceeded required under current building regulations for the roof is 0 20w m. Whatever form the insulation takes it is vital that there is an air gap of at least 5cm between the face of the insulation and the roof covering.

You can insulate a traditional building in a various ways to reduce heat loss and save energy. Locate between 50 and 60 of the nfva at the perimeter of the building and 40 to 50 of the nfva at the cupolas near the center of the roof. Older properties such as churches barns and listed buildings frequently present problems that don t always match the standard insulation solutions for pitched roofs. Grade ii buildings are special interest buildings and the most common on the list making up around 92 of all registered buildings.

This is the most likely grade for a residential home owner. In older buildings where attic space already exists installing insulation is likely to mean the loss of historic plasterwork which is not always appropriate especially if the building is listed. Before installing the insulation make the ceiling as airtight as you can. Of net free vent area nfva for every 300 sq.

Boarded roofs shallow or uneven rafters lath and plaster ceilings and retained old building materials are features often encountered in these types of property.