What insulation is best for a frame house?

A frame house is a wooden building, covered with insulation inside. These houses are very popular due to their fast and affordable construction. However, so that the house is not cold, a reliable insulation should be selected for it..

Characteristics and properties

The thickness of the insulation is selected based on the type of surface. For walls less dense insulation material is suitable, and for floor coverings you need to pick up a heater denser. And also during construction it is necessary to consider climatic conditions. In northern regions with low temperatures in winter, the thermal insulating layer is laid out with a thickness of at least 200 mm and a density of at least 30 kg / m3. In warm areas, where winters are not too harsh, a material with a thickness of 100-150 mm is suitable, where the density is 25 kg / m3.

At the joints of walls, ceiling and floor, the thickness of the insulation should be increased by 50 mm. In this case, you will get housing with good thermal insulation properties, capable of ensuring heat preservation, which will significantly reduce heating costs..

Before deciding on the choice of insulation for a frame house, you first need to understand its characteristics and properties.

  • Thermal conductivity. With a good coefficient of thermal conductivity in winter, the house does not cool so quickly, and practically does not heat up in summer..
  • Water absorption. By this indicator, you can determine how strongly the material is able to absorb moisture. Water absorption should be as low as possible, since by absorbing water, the insulation becomes less insulating.
  • Shrinkage. This is a very important parameter for insulation material – the lower the shrinkage, the better. Cold bridges that appear after the material has subsided are capable of transmitting heat.
  • Sustainability. The insulation should not attract rodents, be resistant to the appearance of mold, fungi and the reproduction of harmful microbes. Damaged material will not be able to retain heat.
  • Environmental friendliness. Perhaps the most important buying factor. Insulation made of environmentally friendly materials is non-toxic and does not harm nature and humans.

Species overview

On the construction market, you can find a large selection of thermal insulating materials, they have their own individual characteristics, pros and cons. Especially popular is insulation with ecowool (cellulose wool). it environmentally friendly and non-toxic insulation with good heat and sound insulation.

Insulation of a frame house with penoplex is preferred because of its low cost and ease of work.. It also has good strength and low water absorption..

In addition to these materials, there are a number of equally popular heaters for a frame house..


These are polystyrene granules filled with air bubbles. This insulation is lightweight and easy to install. It is environmentally friendly, keeps heat well, and is resistant to mold and bacteria. Among the disadvantages are fragility, low sound insulation and susceptibility to destruction by rodents. House insulation with foam plates is carried out using glue and plastic dowels.

Mineral wool

Minwata is a non-combustible fibrous material that is produced in the form of mats or in rolls.. The composition of binders such as synthetic resins, bitumen, bentonite clays and phenolic alcohol makes mineral wool a quality material. It does not allow heat to pass through, it is fire resistant and does not undergo chemical reactions. However, mineral wool absorbs water very strongly. Therefore, when insulating walls with this material, it is necessary to additionally lay a waterproofing layer. The installation of mineral wool should take place according to the following scheme:

  • lay a layer of vapor barrier;
  • install mineral wool as tightly as possible between the frame posts;
  • put another layer of vapor barrier on top.

Basalt wool

The material is made from basalt rocks with the addition of bitumen to hold the fibers together and determine the shape. It is soft, medium density, hard and foil..

This is a high-quality heat and sound insulation material for insulating a frame house, which prevents dampness, fungus and condensation inside the house..

Stone wool

Different rocks are used for the production of stone wool: diorite, porphyrite, basalt or basalite.. This lightweight insulation has excellent thermal insulation, high fire resistance, chemical and biological resistance. High strength and durability can be added to the characteristics of the material.. But stone wool is capable of absorbing water, so an additional waterproofing layer is also needed here..


Insulation with sawdust is perhaps the most inexpensive option. They have high thermal conductivity and fire hazard. And also over time, the material can settle. In order to insulate the walls with sawdust, lime, cement and boric acid must be added to the solution. To insulate the floor, it is covered with a small amount of sawdust, which are well compacted. The work is not easy, and the risk of subsequent shrinkage remains.

Adding expanded clay to the sawdust mixture will enable the material to last longer.

Polyurethane foam

Polyurethane foam is made on the basis of polyester with the addition of emulsifiers, diisocyanate and water. Such insulation is applied by spraying. PPU adheres well to metal, concrete, wood and other surfaces. It has excellent thermal insulation, is not afraid of moisture and is able to maintain the thickness, volume and weight of the structure. The spraying method allows you to process ceilings and walls of any complexity in a short time. But to insulate PPU, you will need to resort to the help of specialists..

Expanded polystyrene

This material is composed of air, polystyrene (derived from petroleum) and modifiers. Unlike Styrofoam the density of expanded polystyrene is much higher, which allows it to retain heat well and increase sound insulation and moisture resistance. In addition, PP has a low flammability and a very affordable price..

The only drawbacks are toxicity and deformation of the material at very high temperatures (+70 degrees).

Expanded clay

Expanded clay is produced from fired clay. It has low weight, good vapor permeability, thermal insulation, resistance to fire and temperature extremes. It is an environmentally friendly material that is not of interest to rodents. But over time, expanded clay is subject to shrinkage, and it also absorbs moisture well..


And this is a high-quality insulation, proven for centuries.. The material has been widely used since ancient times. Peat moss or sphagnum are especially popular. This is due to the fact that it contains a large amount of carboxylic acid, which has high antiseptic properties that do not allow the material to rot..

At a modern construction site, it is recommended to pre-treat the tree with an antiseptic before insulation with moss.. This will help prevent mold growth in the future. The disadvantage of such insulation is that the installation process is quite lengthy and difficult..

Foam glass

Foam glass is a foamed molten glass with high strength, durability and biological stability.. Foam glass plates are moisture resistant and fireproof. But due to their severity, they can increase the load on the structure, and they also have a high price..


The material is made by pressing softwood shavings without adding any components, what does this stuff do environmentally friendly, and natural resin is able to protect wood from mold and mildew. Fiberboard has excellent heat and sound insulation properties, good vapor permeability and resistance to external factors.

Low weight it is easy to work with such insulation. But without decorative finishes, over time, fiberboard sheets can deform. Therefore, with external cladding, spacer braces are required in the frame. And for internal insulation, you will need a hard sheathing.


Fibrolite is a dense board made of wood chips with the addition of magnesia salt or Portland cement, binders and adhesives. It does not burn, does not deteriorate after mechanical stress and temperature changes. It is also resistant to rodents and bacteria. Environmental friendliness, heat and sound insulation at a high level. But when installing fiberboard, it is necessary to install a waterproofing layer.

In terms of environmental friendliness, it is not inferior to cork, but much cheaper. Before installation, fiberboard is treated with an antiseptic, thereby preventing the appearance of mold and material decay. It is very easy to work with it, regardless of the surfaces to be insulated..


White and black oak bark is used to create a cork cover. The bark is crushed and steamed, then pressed under high pressure. The cork does not contain various chemical additives. This is due to the fact that among the components there is already natural glue (suberin). Cork insulation is environmentally friendly, durable and strong.

Has high sound insulation and low thermal conductivity. The honeycomb structure of the fibers is very attractive and does not need to be coated. However, the cost of this material is high, which is justified by its good quality..


In addition to the above insulation, there are also other types of materials. Maybe they are not so popular, but in some cases they are also used to insulate a frame house..

PIR insulation

These are polyisocyanurate sandwich boards that are suitable for insulating any surface. They perfectly retain heat, are not exposed to external factors and withstand temperature changes. The disadvantage of this material is the high cost..

Glass wool

Glass wool is very similar to mineral wool, but much lower in price. She has a low environmental friendliness and a high ability to sag. And also it is unsafe, therefore, when installing glass wool, a special protective suit is required.. But it attaches very well and adheres to the surface..

Slag heaters

Such material is used extremely rarely due to the fact that the raw material for it is the waste of metallurgical production.. In the production of slag insulation, phenol-formaldehyde components are used, but they are not entirely safe.

Despite the rather low prices, such insulation is not popular yet due to its fragility, fragility, water absorption and high thermal conductivity..

Liquid ceramic insulation

It is a high-tech material with high cost. You can work with it without special skills, since it is applied to a wooden wall like paint. Possesses high rates of thermal insulation and antibacterial protection.

Mipora (penoizol)

Sulfonic acids obtained from petroleum and glycerin are added to the urea-formaldehyde resin. The organic acid helps the mass to harden. The resulting mipora can be in the form of crumbs, blocks, or liquid. This material has a high density, it does not undergo combustion. However, the mipora is capable of absorbing water, it is defenseless against chemicals..

Popular manufacturers

Now many manufacturers offer various options for insulating frame houses. These include both domestic and foreign firms. Based on a number of factors, such as material characteristics, customer reviews and value for money, a rating was made for the best insulation materials for the home. These are not entirely expensive, but at the same time the highest quality and most versatile materials from popular brands that can suit every user..


Mineral wool and environmentally friendly composition, which is produced in the form of rolls or slabs. The material has high sound insulation properties, resistance to compression and deformation. Insulation is suitable for outdoor and indoor use and does not require much time for installation.

Hotrock smart

This type of insulation based on basalt fiber is manufactured according to all quality standards and meets all standards.. It is excellent for insulating load-bearing walls, is lightweight and retains its original shape for many years. Available in several thicknesses.

Isover “Warm House”

Excellent performance makes the material very popular with consumers.. Insulation Isover protects the room from cold and heat, creating the effect of a thermos. Experts consider such insulation to be breathable due to its high vapor permeability. The material is made of special glass fibers in the form of plates or mats.

Ursa geo

This is an innovative insulation made of fiberglass and quartz sand. The material is absolutely safe, it does not rot and is not exposed to microorganisms. Withstands heavy loads and temperature drops.

PSB S 15-O

This product has the lowest density and highest vapor permeability due to its porous structure.. It is inexpensive, fairly lightweight, and easy to install. And also does not emit harmful substances, and does not lend itself to the appearance of mold and mildew.

Knauf Therm “House”

Safe material from expanded polystyrene, produced by a well-known German company. The thermal insulation qualities of the insulation and the temperature loads are at the highest level, it is suitable for any climatic conditions.

“Penoplex Comfort”

This is a special extruded foam from a domestic manufacturer from St. Petersburg, with good thermal insulation properties and strength.. It is versatile and suitable for insulation of any structures. Homogeneous structure and processing with a special composition do not allow the material to crumble, absorb water and burn. It is insect, mold and mildew resistant.

“TechnoNicol XPS Technoplex”

For the production of insulation, a well-known brand uses small particles of graphite, which gives the material a light silver color. It keeps heat better than regular foam, stone and glass wool. Resists shrinkage and deformation, and is resistant to rodents and chemicals.

The extended functionality of the product is suitable for warming and leveling any surfaces.

“Shelter EcoStroy ShES standard”

The manufacturing process consists of bonding fibers together at high temperatures. For frame houses, the material is used as a mezhventsovy sealant for thermal insulation and soundproofing. Resistant to biological and physical effects.

“Shelter EcoStroy ShES Arctic”

Another type of insulation from the manufacturer from Podolsk. Made from organic fibers without added chemicals. Due to its high thermal insulation properties, this material is considered super-warm. The insulation can be used repeatedly, it can be easily dismantled and re-installed. A high degree of flexibility allows you to insulate surfaces of any complexity and configuration.

Which one is better to choose?

The main criterion when choosing a material is considered its thermal insulation qualities. After all, its main task is to keep warm in the house. If you choose the right insulation for winter living, you can avoid not only drafts, but also reduce heating costs. And you should also pay attention to the vapor permeability of the insulation for the walls – it should be the highest, and then there will be no risk of fungus and mold.. Do not forget about the sanitary and hygienic characteristics of the material and select an environmentally friendly product.

Besides, the product must be dense and not change its shape from temperature or chemical exposure. After all, a good and high-quality insulation should not lose its functional properties during the entire operational period. Another important factor when choosing is the price.. Environmentally friendly and high-tech insulation will always cost more. But this is justified by their quality and additional capabilities..

As experienced builders say, there are no good or bad insulation materials. There are materials that may or may not be suitable for each specific situation..

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