ELASTOPLASTOMERIC MEMBRANES

Uses: Membrane is used as waterproofing for exposed conditions such as roofs, terraces and balconies, patios, airport aprons and ramp areas.

Advantages:

• High resistance to positive water and vapour pressure.

• Good dimensional stability under tension.

• Good flexibility: that is to say, it can accommodate structural movements.

• Resists water borne chemicals.

• High heat resistance.

• Prevention of electrocution.

Application: Application procedure may vary slightly depending on the site conditions; however, below are general guidelines.

Surface preparation: The surface where the membrane will be laid is to be made clean and dry. All surface imperfections and protrusions are to be removed and repaired. Structurally unsound and friable concrete must be removed and repaired with a suitable repair mortar.

Priming: Apply anti-dust solvent prime to a clean smooth and dry surface using brush, roller or spray allow the primer to dry.

Alignment: Unroll and align membrane rolls and re-roll correctly before torching. Overlaps should be a minimum of 100mm.

Torching: Use gas burner to heat substrate and underside of membrane. Embossing on the lower face of the membrane allows a fast and safe laying. When embossing disappears after torching the membrane is ready to stick, roll forward and press firmly against the substrate to bond.

Caution: Do not over touch because this would expose the reinforcement in the membrane and cause damage to it.

Sealing: Heat both the overlaps and use round tipped trowel to seal the overlap. Excess compound should be smoothened. And pressed into seam using hot trowel.

Up stand: All angles and abutments should be sealed with extra care to ensure full bondage. Seal the edges well into the grooves and protect with appropriate sealant or any other mastic sealant.

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