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

More about flat roof waterproofing made of plastic/plastic roofing Elastomer membranes

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.

Notes on planning

See notes on planning on page ► 222 | Waterproofing of flat roofs made of bitumen/polymer bitumen membranes

Notes on construction See

notes on construction on page ► 222 | Waterproofing of flat roofs made of bitumen/polymer bitumen membranes

Standards and literature

DIN 18195 Waterproofing of buildings - Terms

DIN 18234 Structural fire protection of large-area roofs - Fire stress from below

Part 1: Definitions, requirements and tests; Closed roof surfaces
Part 2: List of roofs that meet the requirements of DIN 18234-1; Closed roof surfaces
Part 3: Definitions, requirements and tests, penetrations, connections and closures of roof surfaces
Part 4: List of penetrations, connections and closures of roof surfaces that meet the requirements of DIN 18234-3

DIN 18531 Waterproofing of roofs as well as balconies, loggias and pergolas

Part 1: Unused and used roofs - Requirements, planning and execution principles
Part 2: Unused and used roofs - Materials
Part 3: Unused and used roofs - Selection, design and details
Part 4: Unused and used roofs - Maintenance
Part 5: Balconies, loggias and pergolas

DIN 18532 Waterproofing of drivable concrete traffic areas

Part 1: Requirements, planning and implementation principles
Part 4: Waterproofing with a layer of plastic or elastomer membrane
Part 5: Waterproofing with a layer of polymer bitumen membrane and a layer of plastic or elastomer membrane

DIN 18533 Waterproofing of components in contact with the ground

Part 1: Requirements, Planning and Implementation Principles
Part 2: Waterproofing with Membrane Waterproofing Materials

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