Waterproofing of terraces without slope


Waterproofing of terraces without slopes, must not only be absolutely watertight, elastic, resistant to weather conditions, and long lasting, but must also have excellent resistance to standing water.



The application of AQUAMAT-ELASTIC, elastic cement-based brushable sealing slurry, reinforced overall with sheets of fibreglass mesh or polyester cloth, 100 cm wide, covers all the above requirements. Its application on terraces creates a strong and continuous elastic waterproof coating, with excellent bonding and durability, able to follow expansion and contraction of the terrace, successfully.




Substrate preparation

  1. Surfaces should be thoroughly cleaned from any loose particles, grease, dust etc.
  2. The intersection of the terrace with the vertical structures (parapet, stairwell termination), should be dampened and sealed along their length using DUROCRET polymer modified cement mortar, or a cement mortar reinforced with ADIPLAST polymer latex (formation of a 5-6cm triangular sided groove).Where fast work is necessary, RAPICRET, fast-setting patching mortar may be used instead. DUROCRET consumption: 1,9-2,7 kg/m length of goove.
  3. The substrate is thoroughly dampened, without leaving any water puddles.


Application of waterproofing

  1. The content of the 25 kg bag (component A) of AQUAMAT-ELASTIC is added into the 10 kg of liquid (component B) under continuous stirring, until a uniform viscous mixture is formed, suitable for brush application. A low-revolution (300 rpm) mixer may be used for mixing.
  2. A layer of AQUAMAT-ELASTIC is applied, as wide as the reinforcement (fibreglass mesh or polyester cloth) and while this is still fresh, the reinforcing material is positioned. The procedure is repeated over the remaining surface. The sheets of reinforcement should be positioned in sequence so that they overlap each other by 5-10 cm.  After this layer has dried, 2 more layers of AQUAMAT-ELASTIC are applied over the entire roof surface. Each layer is applied after the previous one has dried and is brushed vertically to the direction the previous layer was brushed. It is recommended to use AQUAMAT-ELASTIC WHITE as a last layer, in order to reduce the absorption of heat due to sun radiation and thus extend the working life of the waterproofing system. The thickness of each layer should not exceed 1 mm, in order to avoid any cracking. The waterproofing should be extended at least 15-20 cm up to any vertical surfaces (parapet, stairwell termination etc), in order to form a watertight basin. AQUAMAT-ELASTIC consumption: 3,5 kg/m².



  • Temperature during application should be at least +5oC.
  • The freshly rendered surface must be protected from high temperatures, rain and frost.
  • Consult the instructions for safe use and precautions written on the packaging.