How to insulate an attic floor
Thermal insulation attic floor deserves special attention, this concerns not only reduce the cost of heating (in the attic is lost up to 15% of thermal energy). It is no secret that the warm air is lighter than cold, the temperature is above the ceiling, and with the help of thermal insulation can reduce the temperature below the dew point, thus avoiding condensation, stains, mold and mildew.
Instruction how to insulate the attic floor
Usually, the attic floor insulated with fiberglass or mineral (basalt) plates. The thickness of the layer of insulation should be selected according to the characteristics of the insulating material and the construction of the region. At a special vapor barrier material (polyethylene) insulation is laid. Then fill the space between the joists insulation material required thickness. It is important to calculate the thickness of insulation. To reduce heat losses, are placed on top of the girders additional insulating material layer.
Insulate the attic is not difficult. On top of existing insulation is necessary to lay slabs of mineral wool (basalt or glass). The quality depends on the level of insulation of ceilings heat durability of the roof covering and rafter system. Be sure before you lay the insulation, it is necessary to dry the existing insulation.
Near the eave heater should be installed so that the remained ventilation gap of 25-50 mm. Above the insulation material should be put special windproof material that protects from blowing off. Supporting structures overlap should not interrupt or disturb the layer of insulation, even in places all the way into the outer wall. In this regard, the need to deepen the bearing beams in the outer walls of a certain limited distance, and not to bring them to the ends of the insulation.
Attic floors with multivacuum carrier or solid panel design, insulated in the same way as the above-beamed ceilings. RC slabs have a low water vapor permeability, so be sure to lay a vapor barrier on the part of insulation. The thickness of the layer of insulating material must be selected depending on the type of the carrier plate and the characteristics of the insulating material.