A range by ETS Europe, Belgium.
Hypertectum
Contact
Polyurethane-bitumen liquid membrane

Hypertectum Duoflex 2K

Two-component bitumen-PU membrane, mixed 1:1 by volume.

Use it forWaterproofing of basements, foundations, roofs, green roofs, bridge decks, and tunnels.
Apply withBrush, roller, spatula, or airless spray.
Curing timeTack-free: 1-2 hours; Recoat: 6-24 hours; Pot life: 30-45 min. Tack-free values at 25 °C, 55% RH.
CoverageMinimum 1.5 l/m².

Introduction

Hypertectum Duoflex 2K is a fast-curing, two-component, bitumen-extended polyurethane fluid, mixed 1:1 by volume. It forms a highly elastic membrane with strong adhesion to many types of surfaces and excellent mechanical and chemical resistance.

Technical properties

Hypertectum Duoflex 2K · See the technical data sheet for test conditions and full specifications.
PropertyValue
Service temperature−40 to +80 °C
Hardness35 Shore A
Tensile strength> 2 MPa
Elongation at break> 2,000%
Adhesion to concrete> 2 N/mm²

System build-up

  1. 01Prepared substrate
  2. 02suitable Hypertectum primer
  3. 03Hypertectum Duoflex 2K

Mix A:B at 1:1 by volume. Minimum consumption: 1.5 l/m². For non-exposed applications only; the green-roof, foundation or under-tile protection layers must be confirmed for the project.

Hypertectum Duoflex 2K — full specification

Preparation

Clean the surface with a high-pressure washer. Remove oil, grease, wax, cement laitance, and loose particles.

Suitable substrates include concrete, fibre-cement, wood, metal, and well-adhered acrylic/bituminous coatings.

Concrete conditions: R28 ≥15 MPa, moisture <10%, temperature 5–35 °C, RH <85%. Select the primer from the Hypertectum range and follow its sheet.

Application

Mix equal volumes of Part A (resin) and Part B (bitumen mix) by hand or low-speed mixer (300 rpm). Apply immediately; pot life is 30-45 min at 20 °C.

Apply by brush, roller, spatula, or airless spray. Minimum consumption is 1.5 l/m².

Before the main coat, treat cracks locally with Duoflex 2K or Duoflex 1K and reinforcement as described in the sheet.

Limitations

Not recommended for unsound substrates or UV-exposed applications. For non-exposed applications only.

Cleaning

Wipe tools with paper towels, then clean with a suitable solvent. Rollers cannot be reused.

Storage

At least 12 months in original unopened containers in a dry place at 5-25 °C. Close opened tins airtight.