Warming of the roof of a wooden house from the inside

When constructing a house or rebuilding one, most commonly an aircraft, the owners determine that insulation is necessary for the roof and any overlap to stop heat energy from being lost. A wooden house’s roof can be insulated from the inside by selecting the appropriate heat-insulating material and installing it while paying attention to technology.

Warming a wooden house’s roof from the inside

Thermal losses occur in every part of the house’s structure, as demonstrated by long-term calculations and experiments. For instance, the roof passes through the attic and the roof when the temperature is between 20 and 30 percent, meaning that a portion of the money paid for it was wasted. As a result, you can save money on the house’s heating for all the years after you install high-quality insulation.

An estimate of how much heat is lost at home

It should be mentioned that many homeowners choose to insulate only the attic overlap if their home is situated in an area with mild winters. That being said, the roof’s thermal insulation has three purposes depending on the season:

– It keeps the house warm during the winter;

– it prevents the attic from being heated in the summer, keeping the house cool;

Furthermore, the insulation works wonders as a sound barrier, keeping the rooms quiet no matter what kind of roofing or how much rain falls.

These arguments lead us to the conclusion that soundproofing and insulating the roof itself is preferable to doing so only on the attic ceiling.

You might be curious to know how liquid insulation is used to create the walls’ thermal insulation.

Types of insulation for roof design

In addition, consideration for the material’s operational and technical properties must go into the choice of insulation. Simultaneously, the following should receive extra consideration:

  • Low thermal conductivity.
  • Increased moisture resistance.
  • Low combustibility.
  • Environmental purity.
  • The durability of the material.

The following materials are used to provide internal heat to the roof and the attic overlap:

  • Mineral wool in plates and rolls.
  • Ecowata made on pulp basis.
  • Polistyle foam (foam).
  • Penoizol and polyurethane foam sprayed .
  • Expanded clay fractions (overlapping insulation).

Furthermore, natural materials have long been utilized, including sawdust, straw, slag, and dried leaves. These heaters are still in use today by some builders, but they need to be treated carefully because they are not moisture resistant, which leaves room for microflora colonies to grow and putrefactive processes to occur.

Due to their all-around light weight, the overlapping structure and rafter are somewhat weighted by the materials used for the roof’s thermal insulation.

The primary features of the most widely used heater available today are displayed in this table:

Material parameters Materials Thickness, mm
50 60 80 100 120 150 200 250
Density, kg/m³ Mineral wool 100-120
Foam polystyrene 25-35
Poliuretan foam 54-55
Thermal resistance, (m² ° K)/WT Mineral wool 1.19 1.43 1.9 2.38 2.86 3.57 4.76 5.95
Foam polystyrene 1.35 1.62 2.16 2.7 3.24 4.05 5.41 6.76
Poliuretan foam 1.85 2.22 2.96 3.7 4.44 5.56 7.41 9.26
Thermal conductivity coefficient, W/(M × ° K) Mineral wool 0.038-0.052
Foam polystyrene 0.037
Poliuretan foam 0.027
Mass 1 m², kg Mineral wool 15.2 15.8 17.6 20.9 23.2 26.7 32.4 38.2
Foam polystyrene 9.8 10 10.5 eleven eleven.5 12.3 13.5 14.8
Poliuretan foam eleven.2 eleven.7 12.8 13.9 15 16.6 19.3 22

Mineral wool

Since mineral wool is easy to install and has the right properties for thermal insulation of a wooden house’s attic, it is most frequently used to warm the roof structure.

Mineral wool is among the easiest materials to work with.

This material’s features and costs vary somewhat from one another because it is composed of various raw materials. And you must take into account each type of option in order to select the best one:

  • The slag is made of domain slag and consists of a 5 ÷ 12 μm thick fibers, 14 ÷ 16 mm long. This option is the most inappropriate for insulation of the attic, so it is not worth seduced by its low cost, since insulation after a couple of years will have to be re -conducted.

Due to its high hygroscopicity, the slag loses its ability to act as a thermal insulator when it becomes saturated with moisture. It is additionally categorized as G4 and has a low heat resistance. It is not recommended for use in wooden structures because it can only tolerate this insulation at temperatures between 300 and 320 degrees.

Compared to the other two types of mineral watches, the material has a much lower thermal conductivity of 0.48 ÷ 0.52 W/m × ° K. You can see that the fibers are slagged and extremely brittle, sharp, and fragile during installation. Consequently, it is best to avoid using this kind of mineral wool in residential settings.

  • Glass wool. This type of insulation is made from molten sand and glass combat. The thickness of the fibers is 4 ÷ 15 microns, and the length is 14 ÷ 45 mm – these parameters give the material elasticity and strength. The chaotic arrangement of fibers promotes airiness and increase the insulation of the heat insulator.

Modern advanced glass wool is made to withstand temperatures of up to 460 ÷ 500 degrees Celsius, which is significantly higher than that of slags. This kind of mineral wool has a thermal conductivity of 0.030 ÷ 0.048 W/m × ° K.

Glass wool works wonders for insulating stone buildings and is a great choice for a wooden home’s roof. Glass wool is frequently combined with polyurethane foam when the sub-seal space attic variation is thermal.

Because the glass wool fibers are extremely thin, brittle, and sharp, they can easily pierce tissue and enter the respiratory tract or mucous membranes. Thus, before beginning any mounting work, you should outfit yourself in protective gear, including gloves, respirators, dense-fabric suits, and specialty glasses.

  • Basalt (stone) cotton wool is made of mountain gabbro – basalt rocks. The thermal conductivity of the basalt insulation is 0.032 ÷ 0.05 W/m × ° K, the material withstands the temperature up to 550 ÷ 600 degrees.

Stone cotton wool is much easier to work with because the fibers are not as sharp and brittle; they range in thickness from 3.5 to 5 microns and length from 3 to 5 mm. They are dispersed at random, and the insulation is well-strongened by their interweaving, which makes the material resistant to mechanical damage.

Prices of basalt cotton

Basalt cotton wool

Furthermore, basalt insulation can withstand the damaging effects of the outside world and is impervious to chemical influences.

Mineral wool comes in various sizes and is produced in rolls or mats (blocks) for surface insulation. These days, foil insulation is more readily available in construction stores because it both reflects and holds onto the heat in the space.

The primary drawback of all varieties of mineral wool is the material used to bind the fiber, which is frequently based on formaldehyde-phenol resin. She releases airborne toxins that are harmful to people’s health on a regular basis. As a result, it is impossible to list all the varieties of mineral wool that are completely environmentally friendly.

You might want to know more about what water insovers are.

Foam polystyrene

Because it’s affordable and easy to install, polistyrol foam has emerged as the most widely used material for house warming. However, a tight fit between the heat insulator and the surfaces is required for the attic to be properly insulated without the creation of cold bridges. This cannot be achieved with foam because it lacks the necessary flexibility. Consequently, it is mixed with additional heaters, such as spray-applied polyurethane foam.

An extruded plate made of regular polystyrene foam on the left

The average coefficient of the foam is 0.037 W/(m × ° K), although this also depends on the material’s thickness and density.

Ordinary foam can absorb moisture up to 2%, but extruded polystyrene foam has a threshold of approximately 0.4% of the material’s total volume, which is significantly higher.

Polystyrene foam costs

Foam polystyrene

The fueling of polystyrene foam, which melts and produces thick smoke when ignited, is its most hazardous feature. It emits highly toxic smoke that is harmful to one’s health.

As a result, when selecting this insulation, it is essential to consider both its advantages and disadvantages and to maximize the house’s protection against potential emergencies. Reliability in wiring insulation and correct installation of chimney channels (pipes) will require special attention.

The best insulation for a wooden house is the article we would like to draw your attention to.

Poliuretan foam

Using specialized equipment, polyuertan foam is sprayed onto roofing and overlapping structures. Because spraying is done in layers, the coating can have a significant thickness. This technique of applying polyurethane foam ensures that the insulation layer is completely tight since it gets into all of the cracks. As the insulation expands and freezes, it gains a high density and a low thermal conductivity of 0.027 W/(m × ° K). It also releases moisture at a rate of no more than 0.2% of the material’s total volume. Consequently, its ability to act as thermal insulation has not been compromised.

Ice-cream-like polyurethane

A sharp knife can be used to easily trim off any excess polyurethane foam that has been sprayed, making it easier to fit the finished coating level with the rafter system for additional finishing or roofing work. The foam quickly expands and freezes.

The polyurethane foam spraying procedure

By using this material, you can do away with the need for vapor barriers, wind protection, and waterproofing because it handles every complex issue without allowing moisture or steam to enter the space.

Because polyuerean foam has a high adhesion with all building materials, it can be sprayed on any surface, whether it be vertical, horizontal, or beneath a slope.


The small cellulose particles that make up Ecowata. There are two methods for laying this material: "dry" and "wet."

Ecowata is an environmentally friendly material.

  • In the first case, the insulation is scattered between the beams of the ceiling and compacted as far as possible rolls. In this way, the walls and roofing structures cannot be laid out .
  • For a “wet” installation method, special equipment is necessary, where a dry substance is mixed with adhesive substances, and then under pressure using a pipe is distributed to the floors and walls.

"Wet" styling ecovy

  • Another option for ecowide insulation is to fill the space between the rafter legs, after the finishing material is fixed on them, for example, drywall or wooden lining. In this case, you need to correctly calculate the amount of material – it will depend on the height of the rafters, which will determine the thickness of thermal insulation.

Filling in the gaps globally

Compared to other insulation materials, Ecowata offers the following benefits, which can be explained:

  • This is an environmentally friendly material that does not distinguish any harmful fumes into the environment.
  • Ecowata is able to “preserve” the surfaces, preventing mushroom and putrefactive formations from developing.
  • If during the operation of the house it turns out that the thickness of the insulation on the roof is insufficient, then it can be increased or compacted by the already laid material.
  • The laying of the insulation is carried out quickly enough.
  • Ecowata has a long operational period without loss of initial thermal insulation qualities.
  • Pullulose insulation material is necessarily treated with antipyrens, therefore it has very weakness and a tendency to self -substitution. In addition, Ecowata does not give smoke, and even more so – does not distinguish the substances dangerous for the human body.
  • Ecowata, applied to any surface, forms a seamless tight coating of the desired thickness.
  • Insulation is a “breathing” material, so moisture is not delayed in it.
  • The payback period of such insulation is one ÷ three years.

The discussion that follows will focus on the two environmentally friendly materials, ecowy and expanded clay, whose comparative digital characteristics are displayed in the table.

Material parameters Expanded clay gravel Ecowata (cellulose)
Thermal conductivity coefficient, W/(m ° K) 0.016-0.018 0.038-0.041
Density, kg/m³ 200-400 42-75
The density of the adjoining to the structure Depending on the fraction: Tight fit, clogs all the cracks and cracks well
– 15-20 mm – the presence of voids;
– 5-10 mm – tight fit.
Linear shrinkage absent
Vapor permeability of mg/p × m × h 0.3 0.67
Chemical inertia Neutral
Combustibility incombustible G1-G2 (weakly combustible material, t.To. Treated by antipyrens
Moisture absorption, % of weight 10-25 14-16


Warming the attic overlap of a wooden house is a common application for expanded expanded clay. Of course, using an expanded clay system for thermal insulation is challenging, but on surfaces that have been previously prepared, it won’t be hard to fall asleep in between the overlapped beams.

This material is formed from specially prepared clay that has been heated to a high temperature. There are four fractions that make up expanded clay: expanded clay sand, large elements that are 20 ÷ 30 mm in size, and so on.

Fraction, mm East density, kg/m³ The total density of the material, kg/m³ MPA compression strength
14 400 800 – 1200 2.0 – 3.0
4 – 10 335 – 350 550 – 800 1.2 – 1.4
10 – 30 200 – 250 450 – 650 0.9 – 1.1


Benefits of this content:

  • Environmental purity. It does not cause allergic reactions and does not emit to the surrounding atmosphere of toxic substances.
  • The insulation does not lose its initial thermal insulation qualities throughout the entire period of operation.
  • For insulation, you can choose the material of a suitable fraction – this will depend on this. The smaller the fraction, the denser the backfill.
  • Keramzit is a non -combustible material, which is a very important quality for a wooden structure. This heater is isolated chimney from wooden floors, falling asleep into the box built around them.
  • Another important advantage of this material can be called that it is not tolerated by home rodents. If the house stands on a suburban area, then even mice can settle in it, and some heater create quite suitable conditions for this – but not expanded clay!

Details regarding the nature of the jute used in the log house might be of interest to you.

Auxiliary materials

The insulation "pie" contains vapor barrier and waterproofing (windproof) film in addition to thermal insulation materials.

The positioning of the waterproofing and steam layers together

  • Waterproofing is necessary in order to protect the insulation from condensate, which can be collected between the heat insulator and the roof. In addition, this material performs a windproof function, not allowing the cold, dust and moisture from the air directly to the insulation, as well as the attic premises.

Any excess moisture in the insulation will just evaporate into the atmosphere if this membrane has the ability to permit vapor to pass through it.

The microstructure of a vapor-permeable membrane that is wind-resistant

Sprayed polyurethane foam, which does not require wind protection and can be sprayed directly onto roofing or onto the de-"s basis of the boards, must be used for insulation if the work is being done in an already-installed structure and changing the roof material—which should have a waterproofing membrane—is not planned.

  • With thermal insulation of the roof slopes, the insulation is closed with a vapor barrier film from the attic. Steaming is intended to protect thermal insulation material and wooden elements of the rafter system from moisture penetration from the inside.

As you are aware, too much moisture can cause mold, rot, and an unpleasant smell to eventually seep into living rooms when it falls on wood, insulation, and other materials.

The vapor barrier film needs to be installed beneath wall décor if a heated room is going to be installed in the attic.

Vapor barriers are placed beneath ceiling insulation on the boards and beams of the building in order to prevent moisture from entering the thermal insulation layer and to delay the release of heat in the lower rooms.

The protective membrane can be composed of non-woven material or foil and comes in a variety of thicknesses. When using a foil-surfaced film, it is affixed to the roof’s slopes by the side that reflects light and faces the attic. When installing ceiling insulation, the lower room should be facing the insulation. This is done to ensure that heat stays inside the attic or in living rooms and is reflected back outside. The canvases are adhered to one another using foil tape, which contributes to the membrane’s tightness and integrity.

Sealing the coating’s joints

If you wish to save money, you can still apply the tried-and-true vapor barrier techniques provided that the attic board cracks and the joints between them and the beams are well sealed with news-made clay paste. In addition to making the ceiling extremely tight, this kind of protection will keep pests out of the wood and let the insulating layers "breathe."

Once the clay or lime has dried thoroughly, you can start the insulation process. For the record, sawdust has long been used as insulation in wooden houses. To enhance its elasticity, a small amount of lime was added to the mixture along with the same clay. Other natural materials were also used as insulation in addition to sawdust; these materials were dried and placed in between the overlapped beams.

Today, vapor barriers and insulation are installed using this technique, which helps to save a respectable sum of money. However, all of these tasks are quite time-consuming and demand specific skills, knowledge, and dexterity.

Modern materials are used by homeowners who want their work completed more quickly.

How to calculate the required thickness of the insulation?

Selecting an insulation type solely on the basis of cost, ease of installation, or environmental friendliness is insufficient. Accurately determining the necessary thickness of the thermal insulation layer is crucial. This is also required to avoid paying too much for extra material and to establish comfortable surroundings in the space.

Special guidelines—SNiP 23-02-2003 "Thermal Protection of buildings" and a set of rules—SP 23-101-2004 "Design of thermal protection of buildings"—determine the elaborated thickness of insulation. They consist of formulas for computations with a very high number of parameters. However, using a little allowable simplification, you can use the following expression as a starting point:

Δut is equivalent to (R – 0.16 – Δ1 / λ1 – Δ2 / λ2 – δn/λn) × λut.

We start to comprehend the values that are accessible in the formula:

  • Δut- This is a desired parameter, the thickness of the layer of thermal insulation material.
  • R – the required tabular value of thermal resistance (m² × ° C /W) of the insulated structure. These parameters are designed for each region of Russia in accordance with specific climatic conditions. Such a thermal resistance will provide, with a well -calculated heating system, maintaining a comfortable temperature in +19 ° in the room. The scheme with the map of Russia shows the value below shows the value R for walls, ceilings and coatings.

The map-scheme illustrating the necessary thermal resistance values

The value "for coatings" is used to calculate the roof heater, and the value "for floors" is used for the attic floor.

Using the formula, you can determine the insulation thickness for a multi-layer structure starting from 1 before n while accounting for each layer’s thermal insulating qualities. For instance, the roofing "pie" will be a continuous plywood crate that has been glued together and coated from above with roofing material. The insulation layer beneath is something that needs to be calculated, and after that, the ceiling will be lined with real wood. As a result, three layers will be considered: roofing material + plywood + lining.

Crucial: only outer layers that are tightly fitted to one another are taken into account. For instance, a wavy slate is no longer relevant and a flat slate can be considered. All of the layers that are above the ventilated gap are ignored if the roof design calls for a ventilated roof.

Where can I find the values? Calculate the (δn) thickness of each layer; labor will not be involved. The coefficient of thermal conductivity (λn) value, You can choose from the following table if it isn’t specified in the technical documentation for the material:

Estimated thermotechnical indicators of some building and heat -insulating materials
Material The density of materials in a dry state, kg/m.cube Estimated coefficients under various operating conditions
ω λ μ
A B A B A, b
λ – thermal conductivity coefficient (W/(M ° C)); ω is the coefficient of the mass ratio of moisture in the material (%); ; μ – vapor permeability coefficient (mg/(m · h · PA)
A. Polymer
Foam polystyrene 150 1 5 0.052 0.06 0.05
Same 100 2 10 0.041 0.052 0.05
Same 40 2 10 0.041 0.05 0.05
Extruded polystyrene foam 25 2 10 0.031 0.031 0.013
Same 28 2 10 0.031 0.031 0.013
Same 33 2 10 0.031 0.031 0.013
Same 35 2 10 0.031 0.031 0.005
Same 45 2 10 0.031 0.031 0.005
Foam PHV1 and PV1 125 2 10 0.06 0.064 0.23
Same 100 and less 2 10 0.05 0.052 0.23
Poliuretan foam 80 2 5 0.05 0.05 0.05
Same 60 2 5 0.041 0.041 0.05
Same 40 2 5 0.04 0.04 0.05
Perlitoplast concrete 200 2 3 0.052 0.06 0.008
Same 100 2 3 0.041 0.05 0.008
Thermal insulation products from foamed synthetic rubber "Aeroflex" 80 5 15 0.04 0.054 0.003
Extruse polystyrene foam "Penopolex", type 35 35 2 3 0.029 0.03 0.018
Same. Type 45 45 2 3 0.031 0.032 0.015
B. Mineral water, fiberglass
Material -worthy mats are firmware 125 2 5 0.064 0.07 0.3
Same 100 2 5 0.061 0.067 0.49
Same 75 2 5 0.058 0.064 0.49
Mineral -shaped mats on a synthetic binder 225 2 5 0.072 0.082 0.49
Same 175 2 5 0.066 0.076 0.49
Same 125 2 5 0.064 0.07 0.49
Same 75 2 5 0.058 0.064 0.53
The plates are soft, semi -rigid and hard mineral wool on the synthetic and bitumen binders 250 2 5 0.082 0.085 0.41
Same 225 2 5 0.079 0.084 0.41
Same 200 2 5 0.076 0.08 0.49
Same 150 2 5 0.068 0.073 0.49
Same 125 2 5 0.064 0.069 0.49
Same 100 2 5 0.06 0.065 0.56
Same 75 2 5 0.056 0.063 0.6
Mineral wool slabs increased stiffness on organophosphate binding 200 1 2 0.07 0.076 0.45
Semi -rigid mineral wool plates on starchy binding 200 2 5 0.076 0.08 0.38
Same 125 2 5 0.06 0.064 0.38
Glass staple stoves on a synthetic binder 45 2 5 0.06 0.064 0.6
Mats and strips of glass fiber firmware 150 2 5 0.064 0.07 0.53
URSA glass staple fiber mats 25 2 5 0.043 0.05 0.61
Same 17 2 5 0.046 0.053 0.66
Same 15 2 5 0.048 0.053 0.68
Same eleven 2 5 0.05 0.055 0.7
Glass staple fiber "URSA" 85 2 5 0.046 0.05 0.5
Same 75 2 5 0.042 0.047 0.5
Same 60 2 5 0.04 0.045 0.51
Same 45 2 5 0.041 0.045 0.51
Same 35 2 5 0.041 0.046 0.52
Same thirty 2 5 0.042 0.046 0.52
Same 20 2 5 0.043 0.048 0.53
Same 17 . 2 5 0.047 0.053 0.54
Same 15 2 5 0.049 0.055 0.55
IN. Slabs from natural organic and inorganic materials
Stoves of wood -fiber and wood 1000 10 12 0.23 0.29 0.12
Same 800 10 12 0.19 0.23 0.12
Same 600 10 12 0.13 0.16 0.13
Same 400 10 12 0.eleven 0.13 0.19
Same 200 10 12 0.07 0.08 0.24
Fibrilite slabs and arbolite on Portland cement 500 10 15 0.15 0.19 0.eleven
Same 450 10 15 0.135 0.17 0.eleven
Same 400 10 15 0.13 0.16 0.26
Kamyshite plates 300 10 15 0.09 0.14 0.45
Same 200 10 15 0.07 0.09 0.49
Torpical heat -insulating plates 300 15 20 0.07 0.08 0.19
Same 200 15 20 0.06 0.064 0.49
Gypsum plates 1350 4 6 0.5 0.56 0.098
Same 1100 4 6 0.35 0.41 0.eleven
Gypsum sheet sheets (drywall) 1050 4 6 0.34 0.36 0.075
Same 800 4 6 0.19 0.21 0.075
G. Folding
Gravel expanded clay 600 2 3 0.17 0.19 0.23
Same 500 2 3 0.15 0.165 0.23
Same 450 2 3 0.14 0.155 0.235
Same 400 2 3 0.13 0.145 0.24
Same 350 2 3 0.125 0.14 0.245
Same 300 2 3 0.12 0.13 0.25
Same 250 2 3 0.eleven 0.12 0.26
D. Wood, products from it and other natural organic materials
Pine and spruce across the fibers 500 15 20 0.14 0.18 0.06
Pine and spruce along the fibers 500 15 20 0.29 0.35 0.32
Oak across the fibers 700 10 15 0.18 0.23 0.05
Oak along the fibers 700 10 15 0.35 0.41 0.3
Plywood glued 600 10 13 0.15 0.18 0.02
Cardboard facing 1000 5 10 0.21 0.23 0.06
Cardboard building multi -layer 650 6 12 0.15 0.18 0.083
E. Roofing materials, waterproofing, facing
– Asbestos -cement
Sheets asbestos -cement flat 1800 2 3 0.47 0.52 0.03
Same 1600 2 3 0.35 0.41 0.03
– Bitumen
Bitumen oil and roofing oil 1400 0 0 0.27 0.27 0.008
Same 1200 0 0 0.22 0.22 0.008
Same 1000 0 0 0.17 0.17 0.008
Asphalt concrete 2100 0 0 1.05 1.05 0.008
Products from the swept perlite on a bitumen binder 400 1 2 0.12 0.13 0.04
Same 300 1 2 0.09 0.099 0.04

Note that materials are given with two values for either of the operating modes, A or B. These modes accommodate the characteristics of the humid regime in terms of the type of premises as well as the construction region.

The first step is to identify the zone using the map-scheme-wet, normal, or dry method.

The Russian Federation’s territory is divided into zones of rule.

Next, select the regime (A or B) based on how the area and features of the room compare to the suggested table, and determine the value of λn.

Moist regime of rooms Operation conditions, A or B, by moisture areas (according to the map-scheme)
Dry zone Normal zone Wet zone
Dry A A B
Normal A B B
Wet or wet B B B
  • λut – The coefficient of the chosen type of insulation, according to which the thickness is calculated .

Now that the thickness and coefficient of the t t with an excessivity for every layer have been recorded, the insulation thickness can be computed. Note that the thickness must be stated in meters according to the formula!

A special calculator has been placed to help interested readers with their task. It offers a computation for three layers (insulation excluded). Simply leave the additional graph of the unfilled if the number of layers is smaller. The layers’ thickness and the outcome, expressed in millimeters.

The discovered value is negligible, and it needs to be converted to the typical values for the insulation materials’ thickness.

The process of warming the roof of a wooden house

Warming measures should ideally be implemented while constructing a home and installing a roof. Unfortunately, though, sometimes they don’t give them much thought until it becomes apparent how much artificial heat is released into space.

Depending on the type of insulation release, different methods are used to complete the work. Material used to make plates, mats, or rolls, for instance, is laid out similarly. Additionally, ecowata and polyurethane foam are sprayed onto the surface while pressure is generated in a specialized device.

Insulation of the attic ceiling

There are various ways to complete the ceiling vapor barrier, but in this instance, using contemporary materials is something to think about.

The installation of a vapor barrier membrane is the first step on the attic draft floor. Over the whole attic overlap, the canvases of this material are covered in overlapping 150 × 250 mm. After using construction adhesive tape to bind them together, brackets driven by staplers are used to secure them to the overlapping beams and boards.

Vapor barrier layer on ceiling beams

The vapor barrier film will be the first barrier in the path of heated air because the heat from the house’s interior rises to the ceiling and can simply pass through the attic. If heat cannot be removed, it will eventually return to living rooms.

If polyurethane foam is used to fill the spaces between ceiling beams, vapor barrier materials are not necessary.

Subsequently, a chosen heating element is placed or applied onto the surface that has been prepared. These elements may include mineral wool mats or canvases, polystyrene foam plates, expanded clay, or ecovata.

Spraying environmentally friendly insulation in between the overlap’s beams is how it’s done.

Applying ecowan in the spaces between the ceiling’s beams

This material can also be used in another way. For instance, the plank flooring in the attic is already installed, but insulation is needed where it overlaps. In this instance, removing every board is not necessary; opening the floor in multiple locations and using the resulting fissures to let air enter the subterranean space will suffice.

Filling an ecovite space beneath the attic floor’s flooring

An additional choice for insulating an ecowide overlap during home construction is to place it beneath a waterproofing film. In order to achieve this, an empty space is left between the beams where the waterproofing is stretched and fixed. Next, an incision is made in the film to allow the pipe that supplies Ecowide under pressure to pass through in each of the formed cells, which have wooden elements for walls. The film’s cuts are sealed with construction tape once everything has been done.

Making an incision in a film to lay ecovy

The benefit of this approach is that the fibers’ fine dust does not disperse throughout the attic.

Video: insulation of the attic overlap of ecowide by "dry" technology

It is crucial to correctly place mats or rolls of mineral wool between ceiling beams when warming, as improper installation can render thermal insulation ineffective. Additionally, the right insulation material thickness and width must be selected in order to match the thickness of the beams’ protruding portions and their spacing from one another. To ensure that the insulation is tight and the dispute is next to the side wooden elements, the width should be 50 mm greater than the distance between the beams.

Options for improper mineral wool installation are depicted in the figure:

Errors in the laying of mineral wool

A) Cold bridge formation is facilitated by inadequate mat width;

B) Since the insulation’s edges won’t fit out to the vapor barrier, gaps will form that allow cold air to enter, which further detracts from high-quality insulation;

C) Inadequate insulation installation:

– inadequate material thickness in the bottom layer;

– the upper layer of the heat insulator becomes useless due to the gap that forms between its two layers;

– an improperly placed top layer of material.

D) The thermal insulator mats’ excessive width.

The ceiling beams should also be isolated with a thin insulation to prevent the formation of cold bridges, which can occur as a result of differences in material densities.

The vapor barrier or waterproofing can then be stained. A vapor barrier membrane is placed over the insulation if the attic is intended for residential use. A mineral wool waterproofing membrane is applied if the attic is cold. After laying down any material, adjacent stripes are secured to one another using waterproof tape.

Counter-fights are nailed on top of the film on the ceiling beams.

A thick layer of plywood or boards supports the final step in the insulated attic flooring installation process.

For insulated overlap, use flooring

In a similar vein, polystyrene foam plates are being used for insulation. Nevertheless, it is nearly hard to get the insulation to fit the beams tightly, so mounting foam needs to be inserted into any remaining gaps.

Ceramzitis ceiling warming

In a similar manner, expanded clay is sealed with a vapor or hydro- barrier, onto which the flooring is installed, and waterproofed up to the height of the beams.

The vapor barrier on the insulation boards is left exposed if the overlap is done with polyurethane foam. Foam fills the voids between the beams. The attic floor is then installed on the beams after, if needed, waiting for it to dry. First, the surface is aligned.

Warming of roof slopes

The same heaters used for overlapping are used to insulate roof slopes from the inside. By the way, if the roof is flat or has a slight inclination, Ceramzit can also be used for thermal insulation. This heat insulator’s backfill is constructed from the previously prepared street side on the base.

Expanded clay is used infrequently, but it is still used to warm the roof.

Insulation using materials in mats or slabs

The proposed plan illustrates the proper material placement within the insulation "pie," making it suitable for both residential preparation and standard attic thermal insulation.

An approximate plan for roof slope insulation

Mineral wool and polystyrene foam are examples of warm materials that are produced as plates or mats.

  • Before laying them, the entire rafter system is closed by a windproof waterproofing vapor -permeable membrane, which according to the rules should be fixed from the side of the street on rafter legs.

The ground surface of a vapor-permeable windproof layer

You can forgo waterproofing if insulation can only be installed from the inside of the attic because removing the roof is not an option or necessity. In this scenario, thermal insulation should be provided by polyurethane foam.

  • After laying the waterproofing layer, on top of it on the rafters, the rails of the counterparty are fixed . Their thickness should be 4 ÷ 6 mm. These elements are necessary to create a ventilation gap between the roofing material and the film. On top of them, crate boards or moisture -resistant plywood are nailed – this will already be the basis for the installation of the selected roofing.
  • Next, you can proceed to laying the insulation between the rafter legs.

There shouldn’t even be tiny spaces between the wooden components where the mats are installed.

Mats made of mineral wool

The insulation is installed starting at the attic overlap and working its way toward the ridge.

  • If polystyrene foam is selected for insulation of the roof, then its plates should have an exact width equal to the distance between the rafter legs, since they should tightly enter this “cell”. In the event that gaps have formed between the foam and wooden elements, they must be sealed with mounting foam, otherwise the quality of insulation will be significantly lower.

Polistyle foam blocks are far more challenging to firmly fit.

  • The insulation is delayed by a vapor barrier film, which is overlapped . Stripes glued together and fixed to the rafters with brackets.
  • After that, on top of the film, the beam of the counterparty is nailed if necessary – finishing material or crate will be fixed on it for laying another layer of insulation. In this case, the height of the crate should be equal to the thickness of the insulation. It is also recommended to fix the vapor barrier on the second insulation layer.

Multi-layer insulation "pie" roof slope scheme

  • On top of vapor barrier material, finishing material is fixed on the bars of the crate – it can be a board, drywall or moisture -resistant plywood.
Video: insulation of slopes of roofing with mineral wool

Sprayed materials

Materials with good adhesion and the capacity to form a hermetic coating are included in ecowata and poliuretan foam.

Because it can be completed quickly enough, this technique of warming the roof has gained a lot of popularity lately. The surfaces are moistened prior to the insulation being applied, which greatly improves the wall’s and material’s adhesion.

  • Polyuertan foam is sprayed between the rafters, starting from the floor and gradually rising to the skate of the roof. Foam can be applied in several layers to achieve the necessary thickness of the insulation. After the foam of the foam, its protruding parts are cut off.

Polyurethane foam sandwiched between beams

Because the foam creates a completely sealed surface, you can delay turning on the heat in the winter room and prevent it from overheating on hot summer days. With such insulation, ventilation is required if the attic is utilized for living because the rooms need to be ventilated.

When foam is directly applied to roofing materials like corrugated board, metal tiles, or slate, the structure becomes more robust and rigid.

Оогда теплоизоляционные работы будут закончены, и пенополиуретан примет свою окончательнуя форму. Р стропила можно закреплять обрешетку и монтировать отделочных материал.

  • Ecowata can be stacked in two ways: directly on a prepared wooden surface or between two films – vapor barrier and windproof. The second method is more economical and creates less dusting in the room.

Completing the ecovite gap between two layers of film

Insulation is completed using the second method as follows:

A vapor barrier film is stretched and fastened on the attic’s rafters from the side after the windproof, waterproofing vapor-permeable membrane and roofing material are fixed.

– Packed on top of the film is a wooden fixing crate made from a beam that has a cross section of roughly 60 x 20 mm. It is essential for the intertribal space’s insulation to be reliably maintained.

– Following that, the film beneath the skate is cut, allowing an ecowide—the area between the rafters—to pass through them. Ecowata is supplied via a corrugated pipe that is pressurized specifically for this purpose.

– Construction waterproof tape is used to seal the film’s cuts after ecowide has been used to fill the cavities.

Ecowata immediately beneath the ornamental layer

– Drywall is occasionally fastened to rafter legs right away. Eliminating the "windows" that allow an ecowide to occupy the space is also a simple task.

This method is theoretically quite feasible when lining slopes from the inside with plywood or lining; there is always the chance to set up a "window" to access the cavalrs that are still inside the cavities and fill them with ecovite.

Insulating the attic ceiling and burial surfaces is not that hard. The most important thing is to follow the material placement order precisely and ensure that the insulation fits snugly against the wooden roof structures to avoid cold bridge formation.

However, the insulation EFF of CT SNIVICH will be reduced or eliminated entirely if thermal insulation is installed haphazardly and disregarding the advice. Otkadovka Study by Fox Open via link.

You might find it interesting to know what the foamine’s heater is.

Afanasyev Evgeny, Chief Editor

The publication’s author on September 16, 2015

In this article, we delve into the essential methods and benefits of insulating the roof of a wooden house from the inside. By adding insulation to the interior of the roof, homeowners can effectively regulate indoor temperatures, reduce energy consumption, and create a more comfortable living environment year-round. We explore various insulation materials suitable for wooden structures, such as fiberglass, cellulose, or foam board, highlighting their pros and cons. Additionally, we discuss practical tips for proper installation to maximize efficiency and minimize heat loss. Understanding the importance of insulating the roof from within can significantly enhance the overall energy efficiency and sustainability of wooden homes, promoting both comfort and cost savings for homeowners.

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Michael Kuznetsov

I love to create beauty and comfort with my own hands. In my articles I share tips on warming the house and repairing with my own hands.

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