Waterproofing made of plastic/elastomer membranes has also been successfully used for flat roofs for many decades. Flat roofs are exposed to extreme temperature fluctuations (up to 100 °C over the course of the year), as are various types of moisture (building moisture, rainwater, temporarily standing water, moisture used) and mechanical stresses from the subsoil or from above, e.g. due to walking/driving, greening or hailstorm.
Image: Waterproofing of trafficable areas - bauwion
Image: Waterproofing of rooftops covered in the ground - bauwion
Image: Waterproofing of unused roof surfaces - bauwion
Image: Waterproofing of used roof surfaces - bauwion
Image: Waterproofing of balconies, loggias and pergolas - bauwion
Every design should be based on the current edition of the standard applicable to the respective area of application, in conjunction with the current edition of the Flat Roofs Directive, which contains specifications for many individual planning cases and is considered to be the generally accepted state of the art for the construction of a flat roof.
See notes on planning on page ► 222 | Waterproofing of flat roofs made of bitumen/polymer bitumen membranes
notes on construction on page ► 222 | Waterproofing of flat roofs made of bitumen/polymer bitumen membranes
DIN 18195 Waterproofing of buildings - Terms
DIN 18234 Structural fire protection of large-area roofs - Fire stress from below
DIN 18531 Waterproofing of roofs as well as balconies, loggias and pergolas
DIN 18532 Waterproofing of drivable concrete traffic areas
DIN 18533 Waterproofing of components in contact with the ground
DIN 31051 Basics of Maintenance
DIN 18338 VOB Procurement and Contract Regulations for Construction Services - Part C: General Technical Contract Conditions for Construction Services (ATV) - Roofing and Roofing Work
Flat Roof Directive Technical rule for waterproofing, regulations of the German roofing trade
Source: bauwion