The choice of the roof is an important step in the construction or renovation of a house. The main role of the roof is to effectively insulate the house. The materials are chosen according to the tastes and budget of each, but they must also respect local architectural constraints, technical constraints related to the type of frame, without forgetting the climate of the region.

The Right Criteria for Choosing a Frame

The frame solidifies the whole and prepares the installation of the roof. This is a fundamental step, which determines the solidity of the construction. Our trip takes stock of the criteria to be evaluated before getting started.

Frame: a load-bearing element

This may seem contradictory since the frame is placed on the structure of the building, but it is a load-bearing element of the house. In fact, by keeping the walls and the structural work in place, it ensures the solid closure of the construction, a bit like a keystone!

Strength of the frame

The permanent loads on the frame are quite low since the roof covering and the structure of the frame itself are light elements.

Climatic Elements

The roof is exposed to weather and direct sunlight all year round. It is, therefore, necessary to think about the coverage of the frame to ensure:

  • Good insulation
  • Good ventilation

Fire Resistance Criteria

Wood frame

As a load-bearing element, if the frame is affected in a fire, there is a good chance that the rest of the structure will collapse. This is why it is imperative to assess the risks and choose the material that will make up the framework:

  • Solid wood: very fire resistant contrary to what one might think.
  • Glued laminated industrial wood: not very resistant.
  • Metal: expands under the action of fire, poor stability, and low resistance.
  • Concrete: very resistant.

As for the roof, also think about the resistance of the roof:

  • Tile and slate: fire-resistant
  • Zinc: passable resistance and stability

Durability

For wooden frames, it is essential to assess the risks of invasion of parasites and the development of fungi.

The different types of frame

You also have to take into account the type of frame you wish to have made:

  • Farmhouse frame: prefabricated and assembled on-site, it does not always allow the installation of habitable roof space
  • Traditional frame: custom made, therefore, more complex, it allows the development of the habitable attic

The truss structure is a cheaper alternative to a traditional frame but has good resistance. It is made with wooden planks assembled using metal fasteners. Besides, it will support the roof covering and a plaster ceiling. With this type of frame, the insulation is relatively simple and inexpensive. However, this frame does not make it possible to create a furnished space because you can only walk on the beams, the ceiling being in plaster, it does not support more weight.

Truss structure

The traditional frame, although more complex to realize, has the advantage of allowing the development of habitable attic space. This frame is made up of assembled solid wood elements. However, this advantage allows the development of the attic by creating even several rooms depending on the area, this frame is more expensive than the farmhouse. Likewise, insulating roof spaces will be more expensive than insulating lost roof spaces.

Traditional frame

The Different Coatings for Roofs

Terracotta Tiles

House roof in terracotta tiles

The clay is the material used for the manufacture of tiles. This material has proven itself over time, it is very resistant to bad weather like frost. Terracotta tiles come in different shapes and colors, which allows them to adapt to any style of home. On the other hand, it is desirable to insert protection between the tiles and the frame to ensure optimal thermal insulation.

Concrete Tiles

Concrete tile house roof

Just like terracotta tiles, concrete tiles require interposing protection between them and the frame. Besides, concrete is very subject to climatic variations and has the distinction of being colored when exposed to the sun. Concrete tiles are the least resistant tiles in the long term, but certainly the least expensive. Finally, they can be straight or channeled to best adapt to the inclination of the roof.

Just like terracotta tiles, concrete tiles require interposing protection between them and the frame. Besides, concrete is very subject to climatic variations and has the distinction of being colored when exposed to the sun. Concrete tiles are the least resistant tiles in the long term, but certainly the least expensive. Finally, they can be straight or channeled to best adapt to the inclination of the roof.

Wooden Tiles

House roof in wood tiles

In pine, oak, or acacia, the wooden tile allows optimal water flow. Besides, it gives your home an authenticity that only the noble material of wood can convey.

Slates

Slate house roof

Natural, incombustible, and of resistance to any test, the slate remains synonymous with quality and prestige for the roof covering. A slate roof, combined with zinc, brings a lot of character to the general aesthetic of a house. However, its relatively high cost and its heaviness can be a real break in the choice of this material.

Zinc

Zinc house roof

Zinc is an ecological element since it is 100% recyclable, with an optimal lifespan in areas not subject to severe weather. Its lightness makes it an easy to install material, even if this task must be entrusted to a professional zinc roofer

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