The equipment of the attic room significantly increases the living space of the house. Even an unheated room will serve as additional thermal insulation of the dwelling.
A mansard roof is made in the form of a broken gable structure, but there are many other options:
Scheme of a house with a mansard roof
A gable broken mansard roof of the house allows you to get sufficient height ceilings in the room and expand the comfort area. For its construction will require a well-designed project. Creating it yourself is not an easy task; you can order it from a construction company or use a special computer program. The design scheme will allow to calculate the required amount of material for the rafters, insulation, waterproofing, roofing. The angle of slope for the roof slopes is calculated taking into account the recommendations of the manufacturer of roofing materials, in addition, the climatic conditions are taken into account - snow and wind load.
A truss system of a sloping two-slope roof
Bottom The truss system is installed at an angle of 60 ° , its supporting pillars become the framework for the interior walls of the room. The angle at the top of the rafter does not exceed 45 ° , which reduces the amount of material used, but not at the expense of the quality of the coating. Additional rigidity to the frame of the room is given by struts, which are attached to the floor beam and the lower part of the rafters.
Thermal insulation of the attic with a mineral wool
Insulation layer must be at least 20 cm, this thickness will provide sufficient insulation and keep the room from freezing in winter and overheating in summer. An insufficient layer of insulation will lead to regular heat loss and heated snow. Due to repeated melting and freezing, the roofing material will quickly become unusable. In the heat of summer to find an unprotected attic will require the installation of a powerful air conditioner. All these problems are eliminated while observing the norms of warming.
Before making an attic roof, the wood used for the construction of the structure must be treated to protect it from damage by microorganisms and from fire. It is important arrangement of ventilation, allowing to get rid of excess moisture.
Sound insulation is of great importance, because being directly under the roof, you will clearly hear the blows on the roof, especially if you use a metal coating.
Insulation with foam glass
Mineral wool or foam glass and polystyrene foam. Foam materials do not absorb moisture like cotton wool, so they will last longer. Extruded polystyrene has the ability to absorb sound and will become a good sound insulation. Foamed glass does not burn, it is frost-resistant, does not rot, does not let moisture through. Mineral wool is affordable, it is thick enough for insulation, easy to install. Elastic basalt wool does not burn, it fits comfortably between the rafters and is characterized by high durability.
Basalt wool insulation
The article does not describe the design of a certain size. How much material you need, you can find out using the calculator to calculate the attic roof.
The vapor barrier is attached to the truss structure using a stapler. Spreading cloths starts from the eaves, it is necessary to lay them with an overlap of 15 cm and secure with tape. A heater is laid on top, the material fits tightly, leaving no gaps. To fix the insulation stuffed crate. It is made of slats, the width of which is from 10 to 15 cm, and thickness - 5 cm. This part of the work ends with the interior decoration of the room.
A waterproofing is installed on the outside of the rafters that protects the roof from water ingress. The material is fixed with a crate to which the roof covering will be mounted. The pitch between the slats depends on the type of material. Soft roof needs a continuous crate, so the entire area of the attic roof is sewn with sheets of plywood, providing a smooth and solid foundation.
When sheathing gables, they leave room for windows, if they are provided for in the structure.
Roofing of the roof
Work on the independent construction of the roof is a difficult and painstaking process. Using the experience of the masters who share the secrets of construction in the provided video will help to understand the sequence and nuances of the installation of the roof.
This video shows how to make an attic roof of a house:
The author of this video will tell you how to calculate the attic scheme taking into account the loads on it :
Attic roof of the wooden house
Difficult roof construction
Above the bath
The two-mansard roof
With a balcony