Insulation
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Garage conversions often need supplementary insulation as the garage space will be changed into a habitable room, and consequently must comply with building regulations for insulation in this type of room. These regulations designate a U-value for insulation, which measures the rate of heat loss. These are set differently for walls, flooring, and roofs. To comply with building regulations the garage conversion must meet the U-values in all three of these areas, but additional insulation can be added to exceed these values and increase energy efficiency.
Wall insulation for garage conversions is normally performed by making use of internal wall insulation, which adds insulated plasterboard to the pre-existing walls. This will add thermal insulation and stop heat from dissipating through the walls. Insulation must also be installed around doors and windows as these areas can leak heat especially poorly.
Roofs for garage conversions will additionally require insulation. Pitched roofs need insulation to the same standard as the rest of your house. Flat roofs additionally require insulation. This is performed using a cold roof system, where insulation is fixed between the roof joists along with ventilation to prevent condensation forming. The other possibility is a warm roof, where insulation is installed above the roof joists.
Floor insulation is also essential in garage conversions. This is easier if the floor level of the garage requires lifting in order to meet the rest of the house as another layer of insulation can be easily put into either a raised concrete floor, timber joists or a floating floor. If flooring doesn’t need to be elevated it may be necessary to dig out the floor to add the required insulation.
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