4630 aqua-flex 2K membrane

4630 aqua-flex 2K membrane

Two-component cement-based elastic waterproofing membrane, used in- and outdoors in wet rooms, industrial kitchens, terraces, balconies etc
Easy to use
Suitable for glueing the mira vapourmat fabric
Diffusion opened
Adheres to moist substrates
Adheres well to all mineral substrates
Withstands most chemicals in the food industry

Detailed description


4630 aqua-flex 2K membrane is suitable as a membrane in wet rooms, as in bathrooms in homes and in industrial areas as food industry, commercial kitchens, terraces and balconies on concrete substrates and the like.

4630 aqua-flex 2K membrane is available in 3,5 kg and 10 kg plastic buckets.


Product description

2-component, flexible, cement-based membrane for waterproofing.


Applications areas

Applied to all kind of stable cementitious substrates in wet areas as bathrooms in homes, commercial kitchens, indu- stries as well as on terraces and balconies. Also suitable as surface protection on concrete structures, facades, chimneys and foundations. For swimming pools use mira 4650 aqua stop flexible.


Type of substrate

Concrete, plaster and similar mineral-based surfaces.


Pre-treatment of substrates

Ensure the substrate is firm and free of loose particles. Holes, cracks and similar need to be repaired with water- proof mortar/plaster. Substrate should be free of dirt, oil, grease, paint, adhesive residues, etc. Dry and absorbent substrates shall be primed with 4180 primer before applying 4630 aqua-flex 2K membrane. Follow the instructions on the primer packaging.

Where there is a risk of movements in the ground as in joints, floor / wall angles and the like you need to tightened with 4526 safecoat band or mira 4502 vapourband. 4526 safecoat band / mira 4502 vapourband is mounted directly into the wet mass and top-coated subsequently with 4630 aqua-flex 2K membrane. Use 4502 vapourband on terraces and balconies.



The powder is mixed into the paste while stirring. Use a spiral mixer for a minimum of 2-3 minutes, until the mortar is homogeneous and lump-free.

Apply with short hair roller or brush. Application with af brush / roller gives about 1 kg/m² per application. It is important to keep the right consumption, as thicker layers may crack. Consumption is dependent on substrate smoothness. Each layer must be surface dry before the next layer is applied.

The applied membrane must be protected from rain / water for min one day. In areas with intensive heavy traffic, the membrane surface needs to be protected with ceramic tiles or similar durable surface covering.

When applying membrane outdoors over warm rooms, mira 4500 vapourmat cloth must be embedded into membrane layer.


Work safety

4630 aqua-flex 2K membrane is based on special cement and does not require safety labelling.

Please refer to MSDS.


Storage and transport

Store and transport frost free and dry. The product meets technical specifications min 12 months from production date in unopened packing. Can be used hereafter, properties may however change, e.g. prolonged curing time.


Areas of Application

Indoor Areas
Indoor Floor
Indoor Wall
Wet Room
Dry room
Public washroom
Food industry
Outdoor Areas
Outdoor Floor
Outdoor Wall
Levelling compound
Plastered masonry
Concrete element


Application Instructions

Suitable for use on stable cement-based surfaces in wet rooms, bathrooms, industrial kitchens, terraces, balconies etc. Suitable for protecting elements like facade details, chimneys or plinths on the exterior of the building against rainfall. Uneven places, cracks etc must first be repaired with waterproof mortar. Excellent for adhesing the mira vapourmat fabric because the two component mass dries well and rapidly under the vapourproof mira vapourmat and in between layers.


Utility wet room: 1,5-2,0 kg /m²
Public washroom, industrial kitchen (wall): 1,8-2,5 kg /m²
Public washroom, industrial kitchen (floor, balcony, etc): 2,2-3,5 kg /m²
Working Time and Temperature

Working temperature:

2nd layer application: 2-3 h
For coating the surface: 6 h
Dry to touch: 7 days

Dimensions and packaging

10 kg bucket


4630 aqua-flex 2K membrane DS
Technical Data Sheet
4630 aqua-flex 2K membrane DoP
Declaration of Performance
4630 aqua-flex 2K membrane M1
M1 Emission Classification
4630 aqua-flex 2K membrane SDS
Safety Data Sheet
4630 aqua-flex 2K membrane SDS (A)
Safety Data Sheet
Component A (Powder)
4630 aqua-flex 2K membrane SDS (B)
Safety Data Sheet
Component B (Liquid)
ETA 120008
ETA Certificate
ETA 150868
ETA Certificate
Efflorescence manual

Packaging Details

ImageProductEANCodeX (mm)Y (mm)Z (mm)Neto Weight (kg)Bruto Weight (kg)Best Before (Days)
mira 4630 aqua-flex 2K membran, 10 kg57019144630085046302702702701010.35365
4630 aqua-flex 2K membrane