We choose the right insulation and the thermal insulation scheme: above rafters, between them, between and under rafyles.
To maintain a comfortable temperature in a country house, many consume more energy than need. This is usually due to insufficient or absent isolation. And through a poorly, a warmed roof takes up to 30% of heat. Therefore, the arrangement of a warm attic or attic gives a noticeable savings and allows you to increase the living area due to the attic space. The insulated roof perceives the main climatic effects, and it is necessary to provide for inspection and maintenance of building structures. Modern insulation are able to serve as decumbays years, but only in the correct operating conditions. And it is extremely important that the builders are familiar with the principles of the work of the roofing system and comply with the technology of installation of materials.
PIR thermal insulation plates are distinguished by the lowest thermal conductivity parameter among modern insulation: λ = 0.021-0.023 W / (M • K)
1 Warming over rafyles
The method of insulation of the pitched roofs above the rafters is optimal in the construction of a new house, replacing the old roof, and when it is necessary to insulate the attic without dismantling and restoring its interior decoration. In this case, the thermal insulation material reduces the heat loss, protects the carrying structure from the freezing and the negative effect of temperature drops and almost completely eliminates the heat leakage from the interior of the cold bridges. True, at the deadlines of the insulation outside the precipitation adversely affect, capable of wetting the insulation and even spoil the inner decoration.
Scheme of supropic insulation:
1 - rafters;
2 - Wooden planed flooring;
3 - vaporizolation;
4 - thermal insulation;
5 - Aluminum self-adhesive tape;
6 - counterbus;
7 - rarefied doom;
8 - solid wooden flooring;
9 - Lining carpet;
10 - flexible tile;
11 - fasteners.
Choosing a heater for mounting above the rafters, it is important to consider that it will experience the load from the mass of roofing, snow and wind. More efficiently, the rigid plates of extruded polystyrene foam and PIR insulation are operating here. Due to sufficient compression and bending strength indicators, they are suitable for loaded and operated roofs. In this case, the load on the supporting structures increases slightly due to the small density of the materials. Both insulation have a closed cellular structure and do not absorb water, which ensures the stability of the thermal conductivity coefficient and geometric sizes of the plates over time. However, these useful qualities can turn into disadvantages without a properly equipped ventilation gap (using a counterbruck and rareblock) for removal of air from the underpants.
Due to the location of the insulation above the rafters, residential space increases, and open wooden beams play the role of the original decorative element.
The L-shaped edge at the ends of isol-ivol XPS eliminates the appearance of cold bridges.
In our market, XPS and PIR plates, designed specifically for insulation of pitched roofs, with a large selection of thickness are represented by Technonikol companies, Penopelex, Profhellers, Pirrogroup, URSA.
Hard insulating plates are released with smooth and profiled edges. The latter provide a dense joint when laying and the absence of through cold bridges.
High-quality XPS plates have a uniform structure, without voids and seals.
The size of the cells is so small (0.05-0.08 mm) that they are practically indistinguishable eyes.
2 Isolation between rafyles
The roof isolation scheme from the inside allows you to work at any time of the year, not depend on the weather and finish the process on time. Materials are always at hand. And the installation by the power to fulfill one person.
The diagram of the arrepose insulation of the attic:
1 - rafter foot;
2 - thermal insulation;
3 - hydraulic protection;
4 - doom;
5 - vaporizolation;
6 - Interior decoration.
Mineral insulation traditionally use as interconnection insulation: from fiberglass and stone wool. In the Russian market they are represented by Saint-Goben (ISOVER trademark), Knauf-Insulation, Paroc, Rockwool, Ursa. The width of rolls and slabs, as a rule, corresponds to the standard sizes of frame structures. So that the material holds reliably, its width should be 10-20 mm more than the distance between the rafters in the light.
Non-use of the vaporizolation membrane from the insulated side of the insulation and waterproofs - from the outside, often leads to the loss of insulating material of heat-shielding properties.
The cloth of the vapor insulation membrane is located and attached to the rafters with a building staircase, the joints are sampled by the mounting ribbon.
You can also smoke the joints with a construction scotch.
Keep in mind: when installing from the inside, high-quality vapor barrier by the room is needed, which completely eliminates moisture penetration into the insulation. Any gaps between paosoles and other defects will cause moisture accumulation in the insulating material, which is fraught with the loss of useful properties and even its sedimentation.
Insulating plates are more convenient to use with a standard 500 mm raftered step.
Rolls - with a non-standard step rafters.
3 Isolation between and under the rafyles
In many regions of Russia, the cold climate. And the situation when the desired coefficient of resistance heat transfer cannot be achieved by one layer of insulation, frequent. In addition, the rafters themselves are potential wool bridges.
The insulation scheme between and under the rafters:
1 - tile;
2 - hydraulic protection;
3 - rafters;
4 - isolation between rafters;
5 - isolation under rafyles and doom;
6 - vaporizolation;
7 - Interior decoration.
Calculate the insulation thickness is the easiest way to use the heat engineering calculator on the sites of large thermal insulation manufacturers. After entering the source data: the title of the city, the type of structure, the desired temperature in the room, etc. - the program will give the thickness parameter for a particular material in accordance with the existing joint ventures. In the regions of Central Russia, the necessary and sufficient thickness of mineral insulation for the pitched roof is 200 mm. The thickness of rolls and stoves are usually 50-100 mm, and put them in two or four layers. If the height of the rafters does not accommodate the number of insulation slabs, it is perpendicular to the rasbills (50 mm) perpendicular to the rafters. The insulation layer is laid between them. Such a way will inevitably reduce the living space, but it will be much more comfortable in it.
Plates of mineral insulation are installed between rafters in two or four layers (with a stove thickness of 100 and 50 mm, respectively), be sure to place the joints of the rotary.
The vapor barrier film should form a hermetic apron around the perimeter of the window opening niche.
Bonus: 5 Errors when strengthening the roof
- Insufficient isolation thickness, which leads to inconsistency of temperature and humidity parameters with regulatory documents.
- The use of unsuitable materials (not sufficiently rigid or elastic), with incorrect dimensions.
- Careless laying of insulating material, with slits between the plates and in the places of adjoining to the rafters.
- Incorrect performance of the root, with deaf pockets in the ventilation gap area, where air does not flow.
- Neglecting the diagram of the roofing cake.
The quality of mineral isolation speaks its ability to restore the shape to the declared sizes after opening the packaging.
