The choice of roof slope is an important stage in the design and construction of a house. The angle of the slopes affects not only the aesthetics of the building, but also its functionality, durability and safety.
Factors affecting the choice of slope:
- Climatic conditions: In regions with heavy snowfalls, it is recommended to make steeper slopes (from 45 °) so that the snow does not accumulate on the roof and does not create additional load. In areas with strong winds, on the contrary, it is better to make gentle slopes (up to 30 °) to reduce the windage of the roof.
- Type of roofing material: Each material has its own limitations on the minimum and maximum allowable slope.
- Aesthetical preferences: The angle of the slopes affects the appearance of the house.
Minimum roof slope depending on the material:
- Metal tile: 14°
- Profiled sheeting: 12°
- Ondulin: 6°
- Slate: 22°
- Natural ceramic tile: 35°
- Soft roof: 11°
- PVC membrane: 10°
- Ruberoid: 15°
Slope selection recommendations:
- For regions with heavy snowfalls:
- Metal tile: 30-45°
- Profiled sheeting: 20-45°
- Ondulin: 20-30°
- Slate: 35-45°
- Natural ceramic tile: 45-60°
- Soft roof: 15-30°
- PVC membrane: 15-20°
- Ruberoid: 20-30°
- For regions with strong winds:
- Metal tile: 14-20°
- Profiled sheeting: 12-20°
- Ondulin: 6-15°
- Slate: 22-30°
- Natural ceramic tile: 35-45°
- Soft roof: 5-15°
- PVC membrane: 5-10°
- Ruberoid: 10-15°
- For regions with a temperate climate:
- Metal tile: 14-45°
- Profiled sheeting: 12-45°
- Ondulin: 6-30°
- Slate: 22-45°
- Natural ceramic tile: 35-60°
- Soft roof: 5-30°
- PVC membrane: 10-20°
- Ruberoid: 15-30°
Additional factors:
- Slope length: The longer the slope, the greater the slope should be to ensure unhindered water flow.
- Building height: The higher the building, the steeper the roof slope should be to
- The presence of an attic: If an attic is planned to be equipped under the roof, then the minimum slope should be 30 ° to ensure a sufficient ceiling height.
Important:
- Before choosing the roof slope, it is necessary to consult with specialists who will take into account all factors and help make the right choice.
- Do not ignore the recommendations of the roofing material manufacturer.
- When calculating the roof slope yourself, it is necessary to use special formulas and tables.
PVC membrane:
A PVC membrane is a modern roofing material that is distinguished by its high strength, durability, and resistance to atmospheric influences. The minimum roof slope for a PVC membrane is 10°. However, for better water drainage, it is recommended to make a slope of 15-20°.
Ruberoid:
Ruberoid is a traditional roofing material that is distinguished by its low cost, ease of installation, and easy repair. The minimum roof slope for руберойд is 15°. However, for better water drainage, it is recommended to make a slope of 20-30°.
Important:
When choosing the roof slope, it is necessary to take into account not only the type of roofing material, but also the climatic conditions, the length of the slope, and the height of the building. For more detailed information, it is recommended to consult with specialists.
