Insulation
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Garage conversions often necessitate extra insulation as the garage space will be converted into a habitable room, and therefore has to adhere to building regulations for insulation in this type of room. These regulations specify a U-value for insulation, which assesses the rate of heat loss. These are set differently for walls, floors, and roofing. To adhere to building regulations the garage conversion must meet the U-values in all three of these areas, but additional insulation can be installed to exceed these values and increase energy efficiency.
Wall insulation for garage conversions is typically performed by using internal wall insulation, which adds insulated plasterboard to the pre-existing walls. This will add thermal insulation and prevent heat from dissipating through the walls. Insulation must be installed around doors and windows as these areas can leak heat particularly severely.
Roofs for garage conversions will also require insulation. Pitched roofs need insulation to the same standard as the rest of your house. Flat roofs additionally require insulation. This can be achieved by using a cold roof system, where insulation is fixed between the roof joists along with ventilation to avoid condensation forming. The other option is a warm roof, where insulation is added above the roof joists.
Floor insulation is also essential in garage conversions. This is less difficult if the floor level of the garage requires elevating in order to meet the rest of the home as an extra layer of insulation can be easily added to either a lifted concrete floor, timber joists or a floating floor. If flooring does not need to be raised it could be necessary to dig out the floor to add the necessary insulation.
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