Vetotop DecoFloor Membrane

The surface must be free of dust, laitance, grease, oils, curing compounds, surface contaminants, or any weak or loose material that may affect adhesion. 

Concrete substrates must be sound, fully cured (minimum 28 days), and possess adequate compressive and tensile strength. Mechanical surface preparation such as shot blasting, diamond grinding, or captive blasting is recommended to achieve a clean, open-textured surface with a minimum profile of ICRI CSP 3–5. All laitance and non-structural cementitious layers must be removed. The substrate must be dry with a maximum relative humidity not exceeding 80%. Ensure all cracks, voids, and surface defects are repaired using an appropriate epoxy mortar from the Vetorep ER product range prior to priming and subsequently, membrane application. Vacuum clean thoroughly to remove all dust and debris before installation.

Priming is required for highly porous concrete substrates and areas with routed cracks. The surface should be primed using Vetoprime EP691 and allowed to cure in accordance with the recommended drying time prior to the application of Vetotop DecoFloor Membrane. Depending on substrate porosity, a second coat may be applied to ensure complete absorption and maximize adhesion. On dense, well-prepared concrete substrates, priming may be omitted if confirmed by a successful site adhesion test.

Vetotop DecoFloor Membrane is supplied as a twocomponent system, ready for on-site mixing. Before starting, stir Part A (base) thoroughly using a low-speed mechanical stirrer (300–400 RPM) to ensure uniform consistency. Add the entire contents of Part B (hardener) to Part A and continue mixing for approximately 2 minutes until a homogeneous blend is achieved. Scrape the sides and bottom of the container during mixing to ensure full incorporation. For optimal pot life and performance, transfer the mixed material to a clean container (“re-pot”) and briefly mix again. Avoid over-mixing to prevent air entrapment. Do not aerate. Do not dilute.

Pour the mixed Vetotop DecoFloor Membrane directly onto the surface and spread evenly using a notched trowel, flat squeegee, or suitable steel applicator depending on the application design. The membrane should be applied uniformly to achieve a wet film thickness (WFT) of approximately 1.0 mm. Care must be taken to ensure complete coverage, particularly around routed cracks, edges, and penetrations. For crack-isolation strip applications, the membrane should extend a minimum of 150 mm on either side of the treated crack. In full-field installations, overlapping passes should be maintained to ensure continuity and eliminate voids or gaps. Ensure ambient and substrate temperatures remain between 10°C and 35°C throughout application and curing. Do not apply the product below the minimum temperature threshold or when there is a risk of condensation or rising moisture.

Vetotop DecoFloor Membrane should be left to cure under controlled conditions immediately after application. The curing time is temperature dependent and will vary based on site conditions. At 25°C, the membrane typically achieves initial cure within 12 to 24 hours, after which subsequent layers such as Vetotop DecoFloor Screed and Vetotop DecoFloor Grout layer may be installed. Full mechanical and chemical cure is generally achieved after 5 to 7 days. During this period, the surface must be protected from water, dust, chemical exposure, mechanical stress, or premature foot traffic. 

Note: Forced drying methods such as direct heat or air blowers must be avoided, as they may lead to surface skinning or incomplete cure.

All tools should be cleaned with Vetonit Solvent XX400 immediately after use. Hardened material can only be removed mechanically.