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1K sealing membrane

For interior use
Waterproofing prior to installation of ceramic tiles
Ready for use
Crack bridging, anti-fracture membrane
ETA Approved for wet rooms
Smooth and easy to apply
Approved for radon protection

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Product information

Product

Alfix Sealing Membrane 1K is a liquid, 1 part, ready-mixed waterproofing membrane based on polymer dispersion.

Coverage

Approx. 1.84 kg/m² per mm coat thickness.

Packaging

4 kg, 12 kg and 20 kg plastic buckets.

Flooring

For tile fixing, use Alfix LetFix Universal, Alfix LetFix, or Alfix CombiFix depending on substrate and tile.

Precautions

1073

Alfix A/S H.C. Oersteds Vej 11-13 DK-6000 Kolding alfix.com
10
1073-CPR-314-2
14
1073-CPR-314-3
EAD 030352-00-0503

Alfix 1K
ETA-09/0048
ETA-11/0501
Declaration of performance
No. 17

Tests

Etag 022 part 1 and 2
Emissionsanalysis according to Emicode og SINTEF

Technical data

Working temperature
- Min + 10°C
Density ready mixture
- 1.4 kg/litre
Tile fixing
- Usually after 24 hours at +20°C
Curing time
- 7 days at +20ºC
Tensile adhesion strength concrete :
- 0.8 – 1.2 N/mm²
Temperature resistance
- + 60°C
Shelf life
- Min.12 months in unopened container. Keep protected from frost

Sealings

For sealing around floor drains, use self-adhesive Alfix Drain-mat. Remove half the protective silicon paper along the perforated line and subsequently fix to substrate and gully installation. Degrease gully flange before overbridging with drain mat. Remove any clam ring!

In junctions between wall and floor, for internal vertical corners, and around pipe penetrations or sanitary installations, use self-adhesive Alfix Seal-Strip. Application of Alfix Seal Strip is made by folding the strip together along the longitudinal cross cut and subsequently removing the protective silicon paper along the perforated line. Press the strip firmly to the substrate.
Alternatively, use Alfix Reinforced Strip bedded in sealing membrane.

For bridging over cracks and for reinforcing joints, use Alfix Reinforced Strip bedded in Alfix Sealing Membrane 1K.

Application

Surfaces

Cement/sand rendering, older than 2 days
Concrete, older than14 days, max. 90% relative humidity
Lightweight concrete, max. moisture content 8%
Aerated concrete
Screed, older than 7 days
Existing tiles and terrazzo.
Plywood,only floors. Max. moisture content 7 - 12%
Gypsum plaster, fibre-reinforced plasterboards, plasterboards.
Cementious boards suitable for wet room use.

Surface preparation

The surface should be dimensionally stable, sound, and clean. Free from laitance, grease, and dust. There should be no blooms, crack formations, or residues from form oil.
All absorbent, moisture-sensitive surfaces, such as rendering, brick work, aerated concrete, concrete, light-weight concrete, screed, cementious boards should be primed with Alfix Sealing Primer, diluted 1:1 with water.

Plaster boards for wet room use and fibre-reinforced boards should be primed with Alfix Sealing Primer undiluted to full coverage.

For other wet room boards, please consult our Technical Services Dept.
Plywood, floors only should be primed with 2 applications of Alfix Sealing Primer; first coat should be applied diluted 1:3 with water. Second coat applied undiluted.
Existing tiles and terrazzo should be cleaned with Alfix Deep Cleaner.

How to use

With use of roller, brush or 4 x 4 mm trowel, apply membrane to the surface in a layer of approx. 1 mm ensuring full coverage of the area leaving no voids beneath.
The best result is achieved when applying 2 coats: first coat is thin and pore-filling; second coat ensures full coverage. Any subsequent application should be made with 4x4 mm notched trowel. Complete by smoothing the surface with straight trowel edge. Ensure that Reinforcing Tape and Seal-Strip are completely over-bridged.

Drying time after first coat: 3 hours
Drying time after last coat: approx. 12 hours

NB!

During work substrate and membrane should hold the same temperature. Protect membrane from heat or draught.
Thicknesses exceeding 2 mm may cause crack formations.

Cleaning

Tools should be cleaned with water before the membrane dries up.
Once set, 1K Sealing membrane can be removed mechanically

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