To install an additional layer of insulation, you will need to nail the rails to the lower edge of the rafters, but only in the longitudinal direction. Reiki should have a size of 5*5 centimeters. In the middle of the nailed rails, a layer of mineral wool is placed through that the heat -insulating layer becomes 20 cm thick. Sometimes it happens that Minvata sags so that this does not happen between the rails you need to stretch the fishing line or copper wire. Before laying a vapor barrier film that will not allow you to penetrate the water weapon, you need to attach a crate under the slabs of dry plaster, which should be made of steel profiles or wooden rails. In order to increase the thermal insulation of the roof between the racks of the crate, the additional layer of the mineral wool is laid, and then vapor barrier is strengthened on top of it.
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The vapor barrier film is attached to a wooden crate with a stapler, and if a crate from steel profiles, then a double -sided tape is used. The film is not necessary to pull a lot, but lay 10 with a centimeter overlap. The tension is undesirable, since under the influence of different temperatures the film can stretch or compressed. At the junction of the paintings, you need to stick a tape from such a material that can compress and stretch, like a film. This is necessary in order to avoid the appearance of folds or peeling of the tape or film in the future. Since such troubles are most often found in places where pipes pass, then you need to use double -sided adhesive tapes, which are made of butyl, and the places where the joint must be pressed with strips.
