insulate the attic
For a long time the people who live in harshclimatic conditions, inoculated thought disadvantageous arrangement of the attic for housing. But the reality today shows quite the opposite picture: more and more gardeners render habitable your loft insulated it and rebuild. Since this topic is relevant, this publication will be devoted to how warm the mansard roof and turn cold attic in cozy room.
- The historical roots of the use of the attic
- A multilayer roofing "pie"
- Materials for thermal insulation of the attic
- Categorical "no" foam
- Make way for mineral wool
- Polyethylene film
- Features polypropylene film
- Effective diffuse membrane
- Thermal insulation panels with special
- Technology attic insulation
- Do I need to insulate gables?
The historical roots of the use of the attic
The historical roots of the attic origin goin the distant 1630, when the architect Francois Mansart for the first time in the world used the space under a pitched roof to residential and business purposes. For a long time served as the attic housing for extremely poor people who suffered from the cold and heat. And with the invention of new building projects and technologies people have the amazing ability to create in the attic comfort regardless of the weather outside.
A multilayer roofing "pie"
Yes, that's right, because the attic is necessary not just to warm, and to organize the "pie" of warming. Properly conducted attic insulation just reminds layered cake.
Dacha construction is booming, withthe emergence of new thermal insulation materials the owners of country houses have become more and more to build attic, because they have advantages that are not subject to objections. It is not only beautiful, but also profitable and financially: the same one-story house and a full two-storey cost a much larger sum of money. And many people believe that the house in the attic brings special comfort.
Warming of the attic should be carried out by stickingsome of the features and rules to avoid unintended consequences in the winter period. In order to understand how to properly insulate the attic, we should remember the laws of physics: a feature of operation at home in winter is that the warm air stream is always striving upwards and where colder. In addition, it accumulates in itself all the couples walking out of the room, it is the breath of the people, the steam from cooking and from taking a shower. All this steam goes up and into the layer of roofing insulation, where it condenses into water.
Accordingly, the water in the heat-insulatingmaterial - wet room, large heat loss at home, dilapidated interior and nerves owners. That avoid such a course of events and need this multi-layered cake. He should not allow the penetration of steam into the material, insulation (for it is in the vapor barrier), and if the pair is still there penetrated, it must be like (weathering through the ventilation gaps) as soon as possible to withdraw. And if under the metal roofing formed the most condensed, the waterproofing layer will not miss it in insulation.
So, you can come to logical conclusions: how to insulate the roof of the attic - with waterproofing vapor permeability ventzazorom + steam vented = right roofing "pie".
Important: on the recommendations of experienced builders must be at the top of the attic leave non-insulated small triangle. This measure provides better ventilation.
Materials for thermal insulation of the attic
Each material is characterized by itsfeatures that should be considered when choosing the optimal variant. Insulation must keep their properties for a long time, to be the biological stability, non-toxic, water-resistant, does not give off unpleasant odors and meet the fire safety requirements.
Categorical "no" foam
Despite the good performance of thermal conductivity andeconomic benefits, the foam can not be used for thermal insulation of the attic. These savings are not necessary, since all the components of the roof, that is, lathing, roof, and insulation mauerlat be ventilated properly. And the insulation must allow air and moisture. The foam does not have these characteristics, with it the roof to "breathe" is not.
Make way for mineral wool
These heaters are best suited forinsulation of attics, because they do not burn, can withstand high temperatures, characterized by low weight and low thermal conductivity. And they are tough, have a resistance to creep and retain their dimensions.
The choice of insulating material depends on thethe distance between the rafters, and the thickness of their location. And when buying a heater, it is desirable to know the rules of their region and to acquire material with an appropriate heat transfer coefficient.
Such a film may be mesh-reinforced or fabric and is used as a waterproofing.
Important: it is unilateral, so it should only be laid right direction, not to get the opposite effect.
If the humidity in the attic, it is desirable to use a reinforcing film in which one side is covered with foil.
Features polypropylene film
In composition, it is very similar to the previousAlternatively, but more robust and unstable to UV radiation. If a roof is unheated rooms, then this film will settle condensate. The same is true for roofs covered with metal tile and metal sheets. To make up for these shortcomings is necessary to cover the waterproofing viscose: it absorbs water and keeps it.
Effective diffuse membrane
This is a "breathable" material which does not passwater from outside, but allows the inside vapor. The arrangement of the roof "pie", mainly used three-layer membrane, diffuse, with each layer responsible for its function: the strength, UV resistance, waterproofing.
Thermal insulation panels with special
Excellent if used as insulationmodern material, which is already provided hydroprotection, in this case from one level of air circulation can be dispensed with. Insulated panels fit between the rafters, it is important not to leave gaps and ensure their snug fit. You can also make extra crate, for example, through a single fill board dyuymovka. When laying the insulation is finished, you can proceed to the finishing layer, for example, plasterboard paneling.
Technology attic insulation
Rafter system is a framework for thermal insulation, thermal insulation material can be installed between the rafters, beneath them, and the rafters.
The most common option - laying between the rafters. How to insulate an attic properly, in accordance with the recommendations of experienced professionals? To do this, you must adhere to these tips:
- Insulation must necessarily be solid, this also applies to areas adjoining to the wall, windows and chimneys, built in the roof of the plane;
- The width of the air gap in all areas - not less than 2 cm;
- Waterproofing material must not sag, that there were no obstacles for effective ventilation;
- If the depth of the rafters is not enough, they need to beincrease (nail plates of the bars or boards) or use another option: a heater divided into two parts: one is placed between the rafters, and another underneath.
Quality insulation attic begins to check the functioning of truss system, made its rehabilitation if necessary.
Important: This process is mandatory, because the wooden elements can be affected by pests and insects.
If the wood has a wormhole, then it should be treated by chemical means of protection, and severely damaged elements must be replaced.
Along the slope of the roof is laid anti-condensatefilm with a 15 cm overlap. It is attached to the rafters bars (thickness 4.5 cm), and then lathing is attached thereto. Between film and the lattice obtained clearance, which provides ventilation.
Do I need to insulate gables?
Mechanical wall gables that is also needin insulation. The most effective way - the location of the external insulation. This is true if the planned installation on the facade of stucco system, it is advisable to its continuation and gables.
But this is not always possible, so it is necessary to hold the insulation in this way:
- Between the frame beams are installed insulation boards, you will need to remember the windshield layer;
- After installation of insulation wall vsploshnuyu closing a vapor barrier.
Important: The vapor barrier on the front and slopes must not be interrupted.
The roof has already received additional protection against heat loss? Remember that to create a truly comfortable conditions in the attic space and need to insulate the walls.
Careful insulation lofts ensures a comfortable climate and hot summers, and the fierce winter. A correctly chosen insulation reduces heating costs. Just a wonderful combination!