In the conditions of severe winters and severe frosts, a wooden house needs insulation - without it, it is difficult to create comfortable conditions inside in the cold season. Also, thermal insulation will reduce heating costs. This article will tell you how to properly insulate a wooden house with mineral wool for siding.
Thermal insulation of a wooden house with mineral wool outside for siding
Composition and characteristics of mineral wool
Mineral wool brand Isoroc
Mineral wool Technofas
Why mineral wool has become so popular insulation for private construction? The answer to this question is simple - due to the combination of its advantages, this material surpasses other insulation materials in one way or another.
It can only melt, and only at very high temperatures. Therefore, this insulation is better suited for buildings made of wooden beams or logs than combustible foam.
In addition, it is able to retain its properties for several decades.
About brands of mineral wool
The 7 Best Mineral Wool Manufacturers
When you enter a hardware store, you will see many types of mineral wool with different characteristics.
The question arises: what characteristics should a material suitable for insulating a house outside?
And so that under their influence the insulation does not crumple, does not lose its shape and thermal insulation qualities, it must be sufficiently dense.
It should be borne in mind that high humidity outside and its sharp drops are not at all uncommon. Therefore, the ability not to absorb moisture and condensation is very important for mineral wool. However, this is not enough, therefore, when insulating the walls of a wooden house, take care of high-quality hydro and vapor barrier.
Types of mineral wool
Separately, it is worth discussing the issue of the thickness of the thermal insulation layer. The tree itself has some qualities of insulation, and therefore it does not require such a large layer of mineral wool as for a building made of concrete or sand-lime brick.
For example, in conditions of middle latitudes for a wooden house with a wall thickness of 15 centimeters, an insulation layer of 10 centimeters will be optimal. If the walls are even thicker, 20 centimeters, then the required layer of mineral wool will be half as much.
Of course, if you live in a region with a harsh continental climate and severe frosts, then the thickness of the wall insulation should be higher. And if sheets of mineral wool 50 or 100 millimeters thick are not enough for thermal insulation, they need to be laid in two layers.
Calculating the thickness of the insulation online
The table below shows the materials that meet the requirements and are suitable for wall insulation.
|Name||Length and width, mm||Thickness, mm||Density, kg / m3||Thermal conductivity, W / m * K||Price for 1 m3, rub.|
Baswool VENT FASAD 80
|1200 at 600||100||80||0.035||3052|
TechnoNICOL Technovent Standard 50
|1200 x 600||72-88||0.036||3100|
Paroc FAS 3
|1200 by 600||100||120||0.04||3450|
|1200 by 600||100||100|| 0. |
|6700| Mineral wool
Below is a list of everything that is needed to insulate a wooden house with mineral wool for siding.
If you plan to insulate in two layers, multiply the resulting number by two.
Profiles ud and cd for mounting the frame
Beams for battens
When dealing with wood, you must always protect it from the effects of fungus, mold and insects.
Luxens antiseptic impregnation
Vapor barrier membrane
Construction brackets are needed to secure the vapor barrier to the wall.
Construction of the facade dowel for thermal insulation
There are two ways to insulate a residential building using mineral wool - frame and frameless. Both methods are discussed below.
Mineral wool installation schemes
In the first method of installing thermal insulation, first a frame made of a wooden bar or a steel profile is mounted on the wall, then it is laid between its elements insulation.
The process ends with the installation of an external lathing and siding. Now let's take a closer look at the method.
Insulation of the facade of the house with mineral wool
The first stage - surface preparation. Slots and gaps in wooden walls are sealed and insulated, the walls themselves are cleaned of dust, debris and remnants of the old finish, if any. Protruding elements are also dismantled: pipes, shutters, window sills, and so on.
Second stage . The walls are treated with antiseptics, protecting them from decay and fungus.
Third stage. A vapor barrier film is attached to the walls with construction brackets. Membrane sheets are overlapped with each other by 10-15 centimeters, the seams are carefully glued with acrylic tape.
The fourth step - installation of the frame. The timber (pre-treated with an antiseptic) or profile is installed vertically, with an interval (distance between elements) along the width of the mineral wool slab. The timber is fastened to the wall with nails, and the profile - with screws.
Frame for insulation
Optimal distance between the bars of the frame
Fifth stage. Sheets of thermal insulation are placed in the space between the frame elements.
The insulation is fixed to the wall using 4-6 disc dowels. If gaps or gaps remain, they should be repaired with pieces of mineral wool.
Cutting mineral wool slabs with a knife
Warming in two layers
Sixth stage. A vapor barrier film is laid on top of the frame and insulation. As before, the joints are overlapped and taped.
Installing the windscreen
Seventh step. Attached to the frame is a new sheathing layer that will be used to create a ventilated facade and as a frame for siding. In this case, it is permissible to use a small section bar.
Ventilated gap arrangement
This completes the insulation, then it remains only to finish the house with siding.
Important! If two layers of insulation are planned, then the second frame is mounted perpendicular to the first and relative to the siding.
For example, if the walls are finished with siding horizontally, then the beams of the first frame must also be laid. And the bars of the second layer of insulation should be located perpendicular to them, that is, vertically.
Scheme of the insulated facade
Thermal insulation for siding
Thermal insulation materials
Unlike the method described above, this method does not provide for the installation of a frame for thermal insulation, and mineral wool covers almost the entire surface of the wall. Thus, the problem with the "bridges" of cold is solved, as the elements of the sheathing in the frame method of wall insulation are used.
The walls of the house should be prepared for insulation - cleaned of debris, dirt and dust, dismantle everything that could interfere with the process and seal the cracks and grooves with tow or pieces of mineral wool.
Step 2. The cleaned surface of the walls is carefully treated with an antiseptic. If a wooden bar is used as a crate, it also undergoes processing.
As for the first method, a vapor barrier membrane is attached to the wall with brackets.
Step 4. Next, universal U-shaped hangers are attached to the wall. In the horizontal plane, the distance between them should be less than or equal to the width of the mineral wool slab. In the vertical plane, the distance between the suspensions is 50-60 centimeters.
They are mounted on dowels.
Straight hanger fixed to the wall
Step 5. Now you need to cover the walls with mineral wool. For this method, you need to be especially careful to ensure that there are no large gaps and slots through which heat will leave in winter. They must be sealed with pieces of mineral wool.
Fixed mineral wool slabs
Step 6. The next step is external vapor barrier and wind protection. The rules for laying the membrane are the same as last time - overlapping joints, seams are sealed with acrylic adhesive tape.
Why is the vapor barrier of the facade of the house under the siding so important?
Step 7. Outside, a crate of steel profile or wooden bar.
It should press the mineral wool slabs against the wall and provide a ventilation gap between them and the siding. With the help of a level, make sure that the crate is installed evenly.
Important! When insulating in two layers, the slabs of the second layer are positioned so that they overlap the joints of the slabs of the previous layer. This rule is mandatory for both frame and frameless methods of installing thermal insulation.
It can be noted that insulating a wooden house with mineral wool for siding is a relatively simple matter and does not require the use of expensive materials or complex tools, and therefore it is within the power of every homeowner.
By carefully following the instructions, you will receive durable and high-quality thermal insulation that will last you 25-30 years.
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