In our short material, we will try to consider the procedure for insulating the roof with mineral wool from the inside with our own hands. This is a very important process, which during the operation of the house will help to significantly prevent heat loss not only in the attic, but also in all rooms of the house. The most popular insulation material for use on roofs is mineral wool, as it has zero moisture absorption, is resistant to large temperature changes, and performs very well - much better than foam. And now let's take a closer look at the process of insulating the roof with mineral wool from the inside with our own hands.
Where can mineral wool be used
Mineral wool is widely used for insulation not only of roofs, but also of other structural parts of buildings. This material can be used in the following occasions:
- When arranging floordesigns.
- When insulating walls for plastering.
- When arranging ventilated hinged facades.
- When insulating indoor walls.
- During the insulation of the roofing system.
- During the installation of insulation in attics or balconies.
- When using three-layer concrete panels.
As you can see, the insulation of the roof of a private house with mineral wool is not the only case when this material is used. It is very popular among builders and for good reason. When insulating the mansard roof of a private house, mineral wool can also be used - this is an almost universal material.
Benefits of mineral wool
Among the benefits are the following points:
- A wide range of products can be found on sale - both in the form of mats or plates, and in rolls. Therefore, when carrying out insulation work, you will be able to choose the most optimal option that is best suited for a particular case. It is also worth noting that the mineral wool differs in terms of density. The material in rolls has a low weight, and the maximum density of the material in plates.
- The resistance of mineral wool to weathering and high humidity is simply fantastic. Therefore, this material can be used both for internal and external insulation.
- High thermal insulation is an important plus. Mineral wool has a porous structure, it consists of a certain amountinterlayers, therefore, provide not only excellent heat retention, but also a high degree of sound insulation. When insulating the roof of the attic from the inside with mineral wool, use the tips that we provide in our article.
- The material is fireproof - no matter how hard you try, you can't set fire to mineral wool. It also does not spread fire, so it can be used when insulating floors between floors. But keep in mind that some manufacturers claim that mineral wool can withstand a maximum of 900 degrees.
- There is absolutely no tendency to deformation - this is an important parameter, it is he who is responsible for the degree of shrinkage. Mineral wool simply does not have it, therefore, cold bridges do not form, which worsen thermal insulation performance.
- Frost resistance is very good, so the material can be used for insulation of external elements of buildings that are located on the street.
- Environmental safety. Mineral wool is very often used for insulation in children's rooms in private homes, in he alth resorts and medical organizations.
You can save a lot by choosing mineral wool for home insulation, as the material has a very high density.
Material imperfections
But, despite all the advantages, there are some disadvantages of using mineral wool:
- This material has a rather low level of strength, since mineral wool has a high porosity.
- Insulation canprovide reliable thermal insulation only if it is combined with other materials, such as membrane vapor barrier or waterproofing film.
- Please note that it is impossible to combine fiberglass and mineral wool, as various formaldehydes are added to the materials. And they can be hazardous to he alth.
Approximate cost of acquiring materials and performing work
Now let's look at the prices for the work and the purchase of materials. For example, we mentioned roll materials above. So, mineral wool 100 mm thick and 5 m long will cost you about 700 rubles. The width of the material will be 1.22 m. Therefore, if you plan to insulate the floor in the attic with an area of about 60 squares, you will have to pay about 7,500 rubles for thermal insulation materials
But you can also use plates cheaper, costing 560 rubles. for 5 pieces. They are usually used to insulate the space between the roof rafters. If the total roof area is 180 squares, then as many as 60 packages of materials will be needed. The total cost will be about 34,000 rubles.
Complex thermal insulation will cost about 400 rubles. per square meter, and this is just the execution of works. As you can see, the cost of the work is quite high, so many may decide to do everything on their own. Therefore, later in the article we will consider what the technology of roof insulation with mineral wool looks like with our own hands. It is possible that all of our recommendations will be useful.
Recommendations for roof insulation
Quite often, heat leaves the house through sections of the roof where there is no insulation. Therefore, even if no one lives in the attic, it is necessary to insulate the roof. In this case, you can reduce the maximum level of heat loss, as well as extend the life of all materials that are used to decorate the attic space.
Mineral wool can be used in any way. The most optimal and simple option can be considered the installation of wool on the roofs of non-residential premises. To do this, you need to acquire material in slabs, they need to be mounted on floors made of wood or concrete. The procedure is very simple, you do not need to bend the rafters. For insulation, it is best to use rigid boards, the density of which is the highest.
But keep in mind that this procedure needs to adjust the seams. In order to ensure complete thermal insulation, it is necessary to lay slab material with a thickness of about 25 cm.
Flat roof
Flat roofs can be either ventilated or non-ventilated. There is practically no space for arranging an attic on it, so you do not need to install only one heater. In order to insulate a ventilated roof, it is necessary to follow the same technology as when working in a non-residential attic.
First you need to install a layer of insulation, the thickness should be about 25 cm. If the roof is not ventilated, then you need to layvapor barrier film. Next, you need to install mineral wool slabs, to fix them you need to use dowels. You can also use bituminous mastic, which improves the adhesion between the surface and the mineral wool. Roofing material must be laid on top of the coating.
Pitched roofs
It is quite difficult to lay mineral wool on pitched roofs that have a rafter system. In this case, the required amount of material is significantly increased, as well as the time for its installation. The heat insulator must be laid directly into the crate between the roof rafters.
Pay attention to the density of mineral wool, it should not be heavy, as in the end it will load the roof structure very heavily. To overlap the joints, you need to lay the mineral wool in two or even three layers. Installation of the material should be carried out at a temperature of no more than 22 degrees, humidity about 35%. Also, there should be no drafts during installation work.
Methods of insulation with mineral wool
In order to get a high-quality insulated roof, you need to carefully calculate the thickness, quantity and type of material. It is also necessary to observe all the technological features of the process. In order to minimize heat loss in the premises, you need to perform the following actions:
- Insulate the attic. It is this room that is a barrier that does not allow warm air to escape from the rooms. In the event that noinsulation in the attic, all the heat from the rooms will get into it, and even if the roof is insulated with high quality, the rooms will still feel cool.
- Qualitatively insulate the roof. This is the second stage, which will protect the house from heat loss. But keep in mind that for high-quality insulation work, you will need to strictly follow all the instructions and rules that are typical for specific heaters.
Attic insulation
In order to make interfloor and attic floors, reinforced concrete slabs or wooden beams are used. If you have reinforced concrete floors, then the insulation must be placed directly on their surface. If the attic is made of wooden beams, then the insulation material must be installed in the space between them.
But keep in mind that for insulation, you must first lay the material for vapor barrier. He will be able to protect the insulation from moisture and steam. When laying a vapor barrier, you must carefully study the instructions for use. The vapor barrier film has a one-sided functionality, if it is not laid correctly, it will lead to the fact that it will not be able to perform its function.
You can also use sawdust for roof insulation. This material is usually used mixed with sand, clay, lime or cement. The solution perfectly protects the roof, allows you to provide the most he althy microclimate in the room, as well as provide antisepticimpact.
Often, expanded clay is used to insulate attic spaces. It is a natural material that is made from clay. It has a very large number of pores that perform the function of insulation. It is worth noting that for carrying out insulation work using expanded clay, a minimum investment of money will be required. But be sure to choose a method of insulation, based on the data on the materials from which the building is made, height, area, and other parameters.
Pitched roof insulation
In order to insulate such a roof with mineral wool, you need to make a multilayer warm structure. It includes steam and waterproofing, as well as insulation. The pitched surface of the roof should consist of a kind of "pie", in which there are several layers. It should be installed both inside the roof and outside. When insulating the roof from the inside with your own hands with mineral wool, you need to perform the following manipulations step by step:
- Install a vapor barrier, it will prevent moisture-saturated air from entering the space under the roof.
- It is recommended to use mineral wool as the main ingredient for this "pie". And it will be very good if it turns out to be stone wool.
- To protect the entire system from moisture and precipitation, waterproofing must be installed.
- To form a ventilation gap, you need to fill the counter-grid. It will also remove condensate.
- Installation of roof finishing material.
Perhaps these are all actions thatmust be performed when insulating the roof of the house with mineral wool with your own hands. There is nothing complicated in these works, you just need to follow the instructions. And the insulation of the attic roof with mineral wool will last for decades.
Internal insulation
To avoid mistakes during insulation, you need to follow all the instructions as clearly as possible. Below we will give recommendations that must be followed when performing work:
- Make sure the insulation material does not block the ventilation holes.
- In the event that a superdiffusion membrane is used for insulation, it is necessary to lay the insulation on it as tightly as possible to avoid overlapping the ventilation gap.
- If standard roofing film is used, bottom and top gaps will need to be made.
- Insulation boards that are stacked in rows should be different in that their joints are not the same, not matching each other.
- In order for the insulation to fit the rafters as evenly as possible, you need to use a material whose width is slightly greater than the distance between the elements.
- Please note that the thermal insulation material should fit as closely as possible to each other.
- If you choose mineral wool for insulation, be sure to install waterproofing. You also need to monitor how well the film is connected, and also prevent the formation of joints.
- In order to fix the mineral wool slab as securely as possible, you can use either a wire stretched betweenrafters, or self-tapping screws.
Stages of work
Similar manipulations must be performed when insulating the roof of the bath with mineral wool. Before starting work, you need to perform a number of actions:
- Inspect the roofing system and all its components. If there are defects, dampness, signs of decay, then all the elements that have been damaged must be replaced and the defects eliminated.
- Treat the roof with antiseptics.
- Check for utility systems such as water or electricity.
In order to insulate a pitched roof, you need to use rolled or slab material. They fit very well on the crate. But you need to take into account that the vapor barrier material is installed first.
Leave a small distance between the insulation and the roof, this will provide ventilation. And when you lay the insulation on the rafters, you will not only provide thermal insulation, but also provide a high degree of sound insulation. As you can see, roof insulation with mineral wool is an effective way to save on heating in winter and cooling in summer.
