heating an attic with a sloping roof

heating an attic with a sloping roof Insulation of the attic of a sloping roof from the inside

For the convenience of living on the attic floor in the cool season, it is worth considering in advance the insulation of the space. With the onset of winter, the heat losses of the floor will increase. When planning to insulate an attic with a sloping roof from the inside with your own hand, you should take into account many factors. A distinctive feature of such a roof can be called various angles of the pitched slope; when insulating this type of roof, it is important to take into account the algorithm of thermal insulation and decoration.

Features of work

If all actions are performed correctly, then in the summer period the attic will be comfortable, and in the heat it will not get very hot and will become a favorite place to relax.

The roof canopy from the inside to the outside is made of roof, waterproofing, battens, insulation material and steam insulation. It is required to pay special attention to thermal insulation and ventilation, since the convenience of being in the attic will depend on such parameters.

How to equip ventilation

Roof insulation is an important occupation, and ventilation will act as one of the most important components. Such a layer takes no more than 0. 15 meters, and the gap between the insulation and the waterproofing removes moisture and prevents the roof from overheating in the cool season.

In the summer, it will not allow the roof to overheat, and in the winter it retains warm air.

About materials for thermal insulation

Before starting the process of insulation, it is required to take a responsible approach to the selection of material. Consider the popular ones.

  1. Mineral wool - perfectly retains heat, does not lend itself to the decay process and is not able to absorb moisture. The material can be purchased with different thicknesses, and it is also sold in plates, rolls and cylinders.

    It is a good solution for hard-to-reach areas in corners or between rafters, and for fastening to vertical surfaces. The advantages include resistance to fire, and this is the best material for wooden houses. It will last over 50 years. The disadvantages include only the ability to absorb moisture.

  2. Polyurethane foam - used for keeping warm, it is lightweight and durable.

    Its advantages include installation without the need to remove the roof, and it does not let steam through. The material also adheres perfectly to all surfaces without hindering the process with an additional fastening system. Polyurethane foam does not lose its original properties for a very long time, regardless of temperature fluctuations. It is the only material that makes it possible to produce a complete coating without gaps. Polymer heaters are expensive and not everyone can afford them.

    The disadvantages include smoldering at high temperatures. When trying to extinguish a fire, it immediately cools down, but still not in areas where it will warm up is undesirable.

  3. Basalt slabs are distinguished by their mechanical strength, are not saturated with moisture, have high thermal conductivity and durability. Given the elasticity of the material, it is easy to fix it between the rafters, and for most good structures, the rafter pitch is 1 meter. This is the width of the basalt layers, and the advantages include environmental friendliness, because the material is made of volcanic rock and will not harm the environment.

    The disadvantage is the high cost.

  4. Glass wool - molten glass is used to create the material, as a result, the material is resistant to fire, an excellent thermal insulator. Its main advantage is its low price, and from the minus we will single out the need to lay thick layers, I will lose the original qualities after a little time, and the goods are seated, and it does not fulfill the task by 100%. In addition, it must be installed in protective clothing. Otherwise, getting on clothes, it begins to cause irritation.

    In the role of internal insulation, wood chips and seaweed are used. First of all, you need to choose a material in accordance with certain requirements. It should be moisture resistant, environmentally friendly and fire resistant. It is also important to pay attention to the indicators of thermal conductivity. Experts advise to choose a material with a coefficient of 0.

    05 W per square meter or more. The larger the number, the longer it will last, and also will not lose its original qualities.

There are the following requirements for the material for insulating a sloping roof with an attic:

  • Layers of insulating material for a sloping roof in mild winters should be 0. 15 meters, with severe heating an attic with a sloping roof in winter 0.2 meters.

  • Resistance to frost is important for those who live in the northern part of the country.
  • Sound insulation quality.
  • Waterproof.
  • Resistant to fire.
  • When purchasing, you should ask the seller for a quality certificate, and during operation, the product should not emit compounds harmful to human health or smell terrible.

  • The parameters of the material should be kept for a long time so that it is not necessary to carry out a major overhaul again.

The nuances of the work. There are several of them:

  • If the roof slope is not more than 13 degrees, such an item will cause snow delay and rain on the roof, which will provoke the formation of leaks or rusty spots, and measurements must be taken before starting work.
  • To reduce heat losses, it is necessary to think over the insulation of windows.
  • Slopes, attic floors, gables and walls are subject to thermal insulation.

  • The difficulty of installing a sloping roof pie insulation is to perform work efficiently on several planes.

Consider the features of insulation.

Do-it-yourself insulation of a broken roof

Before you go to a hardware store, you need to buy the right amount of material, and also determine the area of ​​the roof.To get the job done well, it is important to follow the step by step guide. First, you should prepare the insulation and all the necessary materials.

Step-by-step instructions


When developing the construction of a rafter structure, it is required to set a step between rafters. Moreover, the figure should not be more than the usual coefficient, and the rafters are installed taking into account that the material for insulation between them is tightly located. Thus, the installation will be much simpler, which makes it possible to reduce the waste of the thermal insulator.


Continuous is made along the roof ridge, not paying attention to its installation and type. In the transverse direction, a pair of boards is fixed to the rafters, maintaining a distance of 0.

2 cm between them. If soft materials are used for the roof, a continuous crate is made over the total area of ​​the slopes. In the case when the thickness of the insulation is equal to or slightly more than the width of the rafters, a counter-lattice must be made before the crate. It is done by attaching a distance bar. It makes it possible to form a gap between the waterproofing material and the roof.

It is nailed from the outer edge of the structure to the ribs of the rafters. You can do without a bar when the thickness of the insulation layer makes it possible to make ventilation without problems. At the end of all work, it is required to trim the cornice and gables.


For broken roofs of houses with an attic, waterproofing is placed between the rafters and the crate above the layer of thermal insulation material. It is important to start from the bottom edge of the roof, and in the new row the material should be applied at a distance of 0.

15 meters from the old layer. It is convenient to fix the film on the rafters with a special stapler. Attach the counter battens with nails or self-tapping screws to ensure the ventilation gap is the correct size. For waterproofing, diffusion, membrane and condensate films are used. Diffusion-type membranes are made in the form of a film with small holes, the side of which is directed towards the insulation material, and the narrow side is directed towards the roof.

The use of such a material makes it possible to remove moisture under the roof. Super diffusion materials are excellent at removing vapors, they do not need an air layer. They are ideal for thermal insulation in living spaces. Condensate film is used when covering the roof with euro-slate and metal tiles.

Insulation material

After the insulation material is laid, which is fixed between the rafters.

It is important that the material fits snugly together. There should be no gaps. In difficult places, you can use mineral wool or backfill with expanded clay. In this case, take into account the height of the rafter section. It is important that the wooden blocks are treated with an antiseptic.


heating an attic with a sloping roof Then it came to the crate ... Wooden blocks are stuffed onto the insulation layer with a step of no more than 0.3 meters.

So the material will be firmly attached in its place, and plywood, chipboard and slabs are used for it, to which the roofing materials are attached.

It is better to make the lathing in the form of a continuous flooring of grooved boards, which have a cross section of 2.5 * 15 cm. The advantages of a continuous flooring include an increase in the stiffness and structural strength of a broken roof. At the same time, the quality of sound and thermal insulation becomes better.

If you use a profiled flooring, metal tile or ondulin as a roofing material, it can be made sparse by stuffing the beams onto the rafters.

Before making the lathing, it is necessary to check and align the plane of the slopes. This requires straight boards to be applied with ribs to the beams. The protruding places on the rafters are leveled, and in the areas of the dips, it is required to fill a bar that compensates for the missing centimeter.

Steam insulation

Next, you need a layer of steam insulation, which prevents moisture from entering the material for insulation.

In the natural environment, moisture begins to rise upward, and ventilation will not fully cope with its removal. Once in the structure, it concentrates and can render the insulation unusable. To avoid this, steam insulation is laid after the insulation. Glassine is suitable for this (the material is cheap, but short-lived). Much higher in terms of parameters, it is surpassed by a membrane for vapor insulation with a multilayer structure, a reinforcing frame and a polymer base that prevents sagging.

The material is attached to the rafters along the ridge, and work begins from the bottom. The rows are overlapped, approximately 0. 15 meters overlapping the previous layer. It is important to attach the film with a stapler, and the areas of overlapping rows are sealed, securing them with tape.

Note that there is no need to stretch the material too much and it should sag a little between the rafters.

At the final stage, the ceiling is hemmed.

Gable cladding with siding

Sloped roof with attic can be finished with vinyl siding, timber or profiled decking. When working with siding, it can be attached to a rafter system or a previously attached aluminum frame. It can also be done on a crate, and this material is often used. Its advantages include elasticity and strength.

Therefore, it will withstand mechanical shocks or damage. In addition, it is resistant to temperature fluctuations, insects and mold. Even a beginner can do the installation.

  1. A crate is made along the pediment, maintaining a step of 0.35 meters.

    For this, wood blocks of the same thickness are suitable. Self-tapping screws or construction nails are suitable for fastening.

  2. In a horizontal position, it is required to fix the starting plate, attaching everything to the crate with self-tapping screws.
  3. Attach the material - it is important that the groove snaps into the tenon of the starter strip. Otherwise, the design will be skewed.

  4. On each strip, fix the upper edges with self-tapping screws on the crate.

And then we will consider the mistakes that are made when insulating broken roofs.

Errors during work

Here are a few:

  • When insulating, a layer of material with the same thickness as brownies cannot be used walls. A smaller figure is also not welcome. In the summer, the attic heats up more and cools quickly in the winter, and therefore the insulation should be more powerful.

  • When working with vapor insulation, it is required to attach it with the correct side. Hardly accessible areas at abutments and joints can also pass the cold. The work must be done efficiently.
  • When arranging the ventilation layer, it is necessary to take into account the obstacle in its path. This obstacle can be attic windows.

Following the step-by-step instructions and choosing the right materials, you can create comfortable conditions for staying in the attic. The article highlighted the basic technological principles of roof insulation with a sloping roof.

( 12 marks, average 4.08 of 5 )


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