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The closed veranda is a continuation of the house. If it is well insulated, then a full-fledged living space will come out, which can be used in winter. You need to lay thermal insulation on the walls, roof and floors. This is the only way to achieve a positive effect. Today we will look at how the veranda is insulated in a wooden house, and also find out which heat-insulating material is suitable for this business.
Which side to lay the insulation on
Before proceeding with the repair, you need to decide on the type of building. It should be noted right away that open terraces are not insulated. This option is available only for closed verandas. The process begins with the choice of thermal insulation, as well as determining the location of its installation. There are no questions with the floor and roof, but the insulation of the walls of the veranda can be done from the inside and outside. The given negative and positive aspects of each method will help to make a final decision.
The positive side of the internal insulation of the veranda is the ability to perform work in any weather, even in winter. From the inside, free access to all elements of the structure of the room opens. That is, it will immediately turn out to insulate the floor, walls and ceiling. The disadvantage is the dismantling of the cladding. Although with external insulation inside the veranda, only the walls remain intact. The floor and ceiling will still have to be removed.
The advantages of external insulation of the veranda should immediately include the displacement of the freezing point and dew into thermal insulation. The wall becomes protected from the influence of aggressive factors, and can independently accumulate heat from heaters. During outdoor work, all debris and dirt remain outside the premises. Any thermal insulation, depending on its thickness, takes a certain percentage of free space. With the external method of insulation, the internal space of the veranda will not decrease.
Choosing thermal insulation for the veranda
To insulate the veranda, the most common materials are polystyrene and mineral wool. However, there are also other types of thermal insulation that have proven themselves well for such work. Let’s look at the materials that are best suited for insulating all structural elements of the room:
- Penofol refers to flexible materials with a foil coating. The heater is used independently or together with other types of thermal insulation. The disadvantage of the material is that it is very thin.
- Styrofoam – very light insulation. It is produced in plates of different thicknesses. Almost zero hygroscopicity allows you to mount the material without arranging hydro and vapor barrier. But in the case of wooden structural elements, experts recommend adhering to the rules for laying a heat-insulating cake, since if the technology is violated, moisture forms between the plates and wood. The disadvantage of polystyrene is the fire hazard, as well as the eating of the material by rodents.
- Styrofoam – this is almost the same foam, only it has improved performance. The soundproofing of this material is poor. At a cost, expanded polystyrene is more expensive than polystyrene.
- Mineral wool not afraid of deformation, chemical influences and fire. Possesses high rates of sound insulation. For its installation, a frame is needed, as well as a protective barrier made of vapor and waterproofing. Over time, the mineral wool becomes caked. With a decrease in thickness, the indicator of thermal insulation properties decreases.
- Basalt wool is produced in slabs and is a kind of mineral wool. The material has similar properties. Among the many heaters for wooden walls, experts recommend using basalt wool, and not polystyrene.
- Polyurethane foam is available in the form of hard and soft plates, as well as a liquid used in the sprayed insulation method. Chemical-resistant material is afraid of ultraviolet rays. The spray method is considered the best, but it is very expensive. When using plates, as well as in the case of foam, moisture accumulates on the surface of the wall.
- Tow is a natural material. Usually it is used during the construction of a log house. In the finished building, it is used as a heater to caulk walls from timber.
You can do the insulation of the veranda from the inside with your own hands with any of the considered materials. It all depends on how much the owner expects.
Thermal insulation of the veranda floor
Internal work involves warming the floor on the veranda, and this must be done first. Usually in wooden, and in many stone houses, boards or chipboard sheets laid on logs serve as flooring. Before starting work, they will have to be dismantled.
Further work occurs in the following order:
- After removing the floor covering, the logs open to the public. Jumpers are placed between them from a board 50 mm thick, secured with metal overhead corners and self-tapping screws. The floor with lags turned out to be divided into cells. Here they need to be tightly filled with insulation.
- Styrofoam or mineral wool is suitable as thermal insulation for the floor of the veranda. Any material can be cut well, which allows you to accurately fit the size of the cells. It is important that there are no gaps at the joints of the pieces of any insulation.
- When using mineral wool, waterproofing is necessarily laid from below so that the loose material does not draw moisture from the soil. From above, the thermal insulation is covered with a vapor barrier. It acts in one direction, so it will not let dampness out of the room, and it will allow moisture vapor to escape from the mineral wool.
- Soft mineral wool can fill all soft voids. But if you perform the insulation of the veranda with foam, then small gaps may remain between the plates. They need to be blown out with mounting foam.
- Regardless of the chosen insulation, its thickness should be less than the height of the log. After laying the floor covering, a gap is formed – the ventilation space. Free air access will prevent dampness from accumulating under the floor of the veranda, which will extend the life of the wooden elements.
When the vapor barrier is laid, you can nail the flooring to the joists. In our case, these are boards or chipboard.
Installation of thermal insulation from the inside on the walls and ceiling of the veranda
After the floor is insulated, the verandas move to the walls. The same mineral wool or polystyrene is used as a heater.
It should be noted right away that only walls that are in contact with the outside with the street are subjected to insulation. It is unnecessary to insulate internal partitions with a house. The photo shows a diagram of a wall with insulation. On it you can consider the order of all layers.
Adhering to this scheme, proceed to the internal insulation of the walls. First, the entire surface is covered with waterproofing. The material at the joints is securely glued with adhesive tape to avoid the formation of gaps. Under the size of the insulation from the bars, the crate is knocked down. Thermal insulation is tightly laid inside each cell, all this is covered with a vapor barrier film, after which the entire cake is sheathed with clapboard or plywood.
The use of polyurethane foam for insulating the walls of the veranda
For wooden walls, sprayed polyurethane foam is the best insulation. With the help of special equipment, high-pressure foam is applied to the surface of the wall. Its particles fill all the small cracks in the wood. This eliminates any possibility of dampness between the thermal insulation and the wall.
The wooden frame will have to be built, as sheathing material will be attached to it. With the spraying method, the owner of the veranda will not have to do anything else. The rest will be taken care of by hired specialists. The only drawback of liquid thermal insulation is its high cost. The work requires special equipment, which is unprofitable to buy for the performance of one insulation of the veranda, so you have to resort to hiring specialists.
Laying thermal insulation on the ceiling of the veranda
Warm air is always at the top. This is the law of physics. Without an insulated ceiling, the labor expended on thermal insulation of walls and floors will be useless. The insulation will prevent the leakage of warm air through the cracks in the ceiling sheathing of the veranda.
Insulation of the ceiling occurs exactly according to the same principle as it was done on the walls. If the trim is already lined on top, then it will have to be removed. Next, there is a process of attaching waterproofing, making a frame, laying insulation and stretching a vapor barrier film. In the final, we return the skin to its place, but before attaching it, you need to make sure that there is a ventilation gap.
How can you heat the veranda
If a lot of money has been spent on warming the veranda, the room needs to be heated in winter, otherwise, why all these efforts are needed. Stretching heating from the house is expensive. In addition, the veranda does not always need to be heated. Why are the extra costs necessary? The easiest way is to attach an infrared heater powered by electricity under the ceiling. The device can be turned on as needed. Thermal insulation will maintain positive temperatures inside the veranda in winter. At night, heating can be turned off, but only during the day.
The video tells about the insulation of the veranda:
Summing up, it is necessary to briefly touch on the windows. After all, it is through double-glazed windows that large heat losses occur. If you decide to make a thoroughly insulated veranda, do not spare money for plastic windows with three glasses. Only comprehensively taken measures will keep the heat in the room in any frost.