Français
Deutsch
A violation of the thermal circuit under the roof provokes the formation of condensation on the cold rafter system. Freezing of the floors of the upper floor contributes to the growth of black mold and rapid rotting of wooden beams.
Forming a reliable barrier requires accurate calculation of the insulation thickness and proper installation of moisture-wicking membranes. The analysis of the physical properties of materials helps to create a roof pie that is breathable but impervious to frost.
Classification of fibrous insulation materials
Mineral materials have high vapor permeability, which is critical for removing moisture from the living quarters of a wooden house. The porous structure effectively dampens the noise from the rain drumming on the metal tiles. Laying slabs unawares between the rafters prevents the insulation from slipping under its own weight.
To insulate the under-roof space, use:
- basalt wool mats with a density of 35 kg per cubic meter;
- lightweight fiberglass rolls for laying on horizontal floors;
- blown cellulose eco-wool for seamless filling of hidden cavities.
Fibrous structures require mandatory protection by a diffusion membrane from the street for moisture weathering. On the side of the living rooms, a continuous contour of a vapor barrier film is mounted with overlaps with butyl rubber tape.
Application of polymer and sprayable materials
Synthetic insulators have zero moisture absorption and do not require the creation of a complex ventilation gap system. The high mechanical strength of extruded polystyrene foam allows concrete screed to be poured over it on flat roofs in use.
The polymer group includes the following materials:
- styrofoam plates with an L-edge to eliminate cold bridges;
- spraying of closed-cell polyurethane foam with high-pressure devices;
- the use of foiled foam as a heat-reflecting screen.
The application of liquid polyurethane foam creates an absolutely monolithic layer that fills microcracks in the abutments of brick pipes to the roof slopes. The absence of seams eliminates the risk of drafts in the attic during heavy winds.
Calculation of layer thickness and organization of ventilation
The thermal engineering calculation is based on the climatic zone of the building. For the Moscow region, the thickness of mineral wool on the mansard roof is set at 200-250 mm. The slabs are laid crosswise: the first layer is mounted along the rafters, the second is mounted across an additional crate to cover the wooden cold bridges.
The operability of attic insulation is impossible without supply and exhaust ventilation of the under-roof space. Cold air should enter through the perforated soffits on the eaves and freely exit through the ridge aerators. Blocking the vent with films or snow instantly causes the insulation to get wet and lose its insulating properties. Быстрое и правильное оформление апостиля и легализации экономит время и деньги. В компании ЮСТ групп Киев вы получаете комплексное обслуживание: справки МВД, апостиль МИД, дубликаты свидетельств, регистрацию торговых марок и помощь в браке с иностранцем. Наши юристы имеют многолетнюю практику и прямые каналы взаимодействия с государственными органами. Мы гарантируем прозрачность на каждом этапе и полное соответствие документов международным стандартам. Тысячи довольных клиентов уже воспользовались нашими услугами и рекомендуют UST Group как надежного партнера.