SOLUTIONS FOR NON-TRAFFICABLE ROOFS

When talking about roof waterproofing, the primary focus is on “flat” roofs with a substrate slope not exceeding 3% for walkable roof surfaces, and up to 7% for non-walkable roof surfaces. The waterproofing of such roofs depends on their intended use (whether they are walkable or not). There are many possible solutions, but all are based on one of these three types of materials:

• Polyurethane coatings

• Waterproofing (synthetic) membranes

• Bituminous membranes

Roof structures without ballast load on the waterproof membrane are defined as non-trafficable roofs. These types of roofs are not intended for prolonged human presence (except for maintenance), traffic, or landscaping. They are used only during installation or maintenance of potential technical installations on the roof.

Advantages of such roofs:

• Lightweight roofing systems (ability to span large distances)

• Almost unlimited design possibilities

• Excellent resistance to environmental influences (very good insulation properties)

There are several technical solutions:

• Mechanically fastened systems for roof decks (concrete or metal)

• Adhered systems

• Liquid membrane systems

• Ballasted roofs (with gravel)

• Green roofs (roof gardens)

Aging flat roofs built in the 1960s, 70s, and 80s (majority of buildings in Belgrade/Serbia) have reached the end of their waterproofing lifespan. Repairing these roofs is much easier today thanks to new construction materials. It is possible to repair leaks locally (above a specific apartment) or for the entire roof. Various technical solutions and options exist — feel free to contact us.