Aquashield PU 2K Plus

Two-component, solvent-free, hybrid polyurea membrane applied by spray using a high-pressure, bi-mixer type pump to form waterproof coatings on roofs and bridge decks directly on site

Product Description

Aquashield PU 2K Plus is a solvent-free paste consisting of selected epoxy polyurethane resins, special fine-graded aggregates and admixtures. Aquashield PU 2K Plus thixotropic consistency makes it easy to use for waterproofing even vertical and sloping surfaces. When completely dry Aquashield PU 2K Plus forms a waterproof plastic coating that is resistant to prolonged immersion in water, even when slightly acid or alkaline, and resistant to aggressive agents present in the soil.

Field of Application

• Waterproofing roof gardens and inverted roofs.

• Waterproofing sheet metal roofs.

• Waterproofing steps and stands in stadiums.

• Waterproofing bridge and viaduct decks

Product Details

Product identity

component A: thick paste
component B: liquid
component A: grey
component B: transparent
Density (g/cm³):
component A: 1.05
component B: 1.05
Dry solids content (%):
component A: 100
component B: 100
Brookfield viscosity at +23°C - 50% R.H. (mPa•s):
component A: 18,000
component B: 50


Aquashield PU 2K Plus is supplied in:
– 5 kg plastic buckets A+B
– 20 kg plastic buckets A+B


The approximate consumption is 1 – 1.5 kg/m2

Application Procedure

Preparing the substrate

The substrate to be treated must be mechanically robust and clean. Remove all cement laitance, traces of powder, flaky parts, grease, oil, and form release agents by sandblasting or washing down with a high-pressure water pump. If the substrate to be waterproofed and protected with Aquashield PU 2K Plus is in poor condition, remove the damaged parts manually or mechanical abrasion by using a hydro-demolition system or a hydro-scarified. The last technique, which uses high-pressure water, is recommended because the reinforcement rods are not damaged. The structures that are not subject to vibration could cause small cracks in adjacent concrete. Once the rust has been entirely removed by sandblasting, repair with a pre-blended repairing mortar. Absorbent surfaces to be treated with Aquashield PU 2K Plus must be primed with Seal Primer. Existing floors, which are covered in tiles, must be well bonded to the substrate, and the surface of tiles must be free of substances that could compromise the adhesion of Aquashield PU 2K Plus, such as oil, grease, paint, wax, etc. In order to remove material that could affect the adhesion of Aquashield PU 2K Plus, clean the floor with detergents and water. After this, the surface must be treated with Epoxy based Primer.

Preparing the product

The two components which form Aquashield PU 2K Plus are supplied pre-dosed. Mix the thixotropic emulsion component A at a low speed (400 rev/min) until it becomes liquid. Add the powder component B while mixing and continue mixing until a smooth, lump-free blend is obtained. Once blended, the product has a pot life of approximately 2 hours at +23°C.

Applying the product

Aquashield PU 2K Plus must be applied in two layers with a brush or a long-haired roller. Before applying the second layer, wait until the first coat is dry, making sure the product becomes darker with a matt finish. The second layer is applied diagonally to the first one. The final thickness of the two layers of Aquashield PU 2K Plus must be at least 0.8 mm to create a solid, flexible, and continuous film. Ensure there are no interruptions in the film caused by imperfections in the substrate.