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Fondafor BACK

Torchable elastomeric bitumen membrane for exterior waterproofing of underground walls.

  • High resistance to cracking, to puncturing, to nail-tearing and root-penetration.
  • Long life due to the properties of the SBS elastomeric bitumen compound.
  • Traditional welding by propane-torching.
  • Single ply, easy to install.
Main uses
  • Exterior waterproofing of underground walls of concrete or masonry, coated or not, of residential premises.
  • Waterproofing of earth retaining walls, stairway ramp walls, consolidated plantings, etc..
  • Fondafor is used alone or with Fonda +/ Fonda GTX (protection and drainage boards), providing complementary protection and/or drainage.
  • Top protection:This is done by flashing with ridge or strip flashing according to the regulations (in compliance with professional rules in force) or by Parasolin termination bar.
  • Vertical drainage:If drainage is necessary (in compliance with professional rules in force), the water is deflected to the drain by the installation of one of the Fonda Protection systems (Fonda+ or Fonda GTX) up to 7.5m high above this, protection by stacking concrete blocks or extruded polyurethane panels.
  • Backfill:In case backfilling might provoke perforation, protect the Fondafor by one of the Fonda systems (Fonda+ or Fonda GTX).
Description
  • Membrane thickness: 3.2mm;
  • Membrane surfacing: slate chips (light-coloured schist);
  • Underfacing: fusible film;
  • Side overlap with scarified fusible protection;
  • SBS elastomeric bitumen;
  • Non-woven polyester reinforcement;
  • Root-inhibiting additive.
Applications

Preparation of substrates:

  • Eliminate excrescences and rough points, dress the holes, point the masonry work, straighten and dress sharp edges and angles.
  • Flatness under the rule of 2m: tolerance 10mm.
  • Using mortar, chamfer the connection of the walls with the foundation footing.
  • Clean the wall to be waterproofed.
  • Apply Siplast Primer to the surface.

 

Application:

  • Torch the membrane of a minimal length of 3m; This may be increased by the extension of the foundation footing.
  • At the head of the membrane, fix the membrane with four mechanical fixings per linear meter.
  • Apply the membrane to the foundation footing’s rim over 0.10m at least or, under the level of the premises over 0.30m.
  • Work from bottom to top.
  • For heights greater than 3m, cover the mechanical fixings by the endlaps (15cm).
  • The laps are staggered from each other.
  • The maximal waterproofed height is limited to 15m.
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