Waterproofing TERRACES and BALCONIES - DOWNSPUTS & GUTTER FLASHING JOINTS

Treatment of joints at drains, gutters and elements passing through 

While waterproofing using the "above screed" method, it should be carefully taken into consideration that every foreign existing element on the surface and the edges, must be connected to the waterproofing layer by an "elastic bridge".

BETONSEAL MS 2.0, the sealant which is needed to make the connection, must perfectly adhere to the surface, therefore, all contact points shall be treated with a specific product, i.e. BETONSEAL PRIMER, and all plastic surfaces such as polyethylene, polypropylene, polyamide, PVC, etc... shall be prepared giving them a light sanding before applying the primer.

For this reason, we describe in more detail here below the right method for realizing this joint:

 PLASTIC PIPES AND DRAINS

  • Before placing a drain or sealing a plastic element impregnate a cloth or a piece of industrial paper with BETONSEAL PRIMER and rub the artefact in the contact area;
  • immediately after apply BETONSEAL MS 2.0;

GUTTERS

  • Apply a coat of NORPHEN FONDO IGRO to the concrete part that is adjacent to the edge where the gutter is to be positioned;
  • after impregnating a cloth with BETONSEAL PRIMER pass it over the metal edge of the gutter;
  • allow the solvent to evaporate (15-30 minutes) then proceed with sealing creating a "bridge" astride the joint over approx. 5+5 cm on both sides with BETONSEAL MS 2.0;
  • after at least an hour and within 24 hours proceed with waterproofing using BETONGUAINA or any other scheduled product.       

OTHER ITEMS

  • Any other exhisisting element inside the screed or placed and secured to the floor, should be connected to the screed with a small cove made with ​​BETONSEAL MS 2.0.

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