6990 betodeck

Levelling and repair mortar
EN 1504-3 R1 > 10 MPa
Weatherproof repair mortar used for heavy-duty surfaces like terraces, balconies, swimming pools and outdoor staircases
Rapidly hardening
Cement and washed quartz sand based
Lightly alkaline
Suitable for levelling- and repair jobs in pools, terraces and balconies
Suitable for use in an industrial environment
For levelling, repairing and building slopes

Detailed description


6990 betodeck is a low-alkali, cement based, modified repair- and levelling compound.

6990 is suitable for use on heavy-duty surfaces like terraces, balconies, swimming pools, outdoor stairs and areas where traditional products might cause an alkaline reaction.

6990 betodeck is a dry product that is ready to use after mixing with water.


Product description

Low-alkaline, cement and quartz sand based water- and frostproof repair- and levelling compound.


Application areas

For repair and levelling works as well as building slopes on surfaces that must endure water and moisture. On moderate-duty surfaces, the screed can be left uncovered.


Types of substrates

Suitable for use on coherent and clean substrates, such as concrete and floor screed.


Pre-treatment of substrate

The substrate must be dry, stable and soherent, clean of dust, grease and other dirt. Any hardened laitance and weak parts of the concrete surface shall be cut off or ground away. Grease, oil etc. to be removed using 7110 base cleaner, high pressure water cleaning or other effective cleaning method.



Priming is normally not necessary, however very porous substrates should be primed with mira 4180 primer.



25 kg 6990 betodeck powder to be mixed with 3,4-3,9 l clean water. For the best result, mix a minimum of 2 minutes with a cement mixer or pump, until the mixture is homogenous.

The mortar can be used up to 3 hours after mixing 10-20°C.

Apply mixture immediately and work it thoroughly into substrate.

Newly cast concrete must be protected against drying out during hardening process.

The surface is ready for light traffic after 6 hours.


Working environment

The product contains cement. Working hygienic rules for cement must be followed.
6990 betodeck contains white cement that has a naturally low chromium (VI) content, and will therefore always comply with the limit value of max. 2 mg/kg.
Reference the product safety data sheet.



25 kg plastic bags.


Storage and transportation

Transport and store dry. 6990 betodeck keeps technical specification minimum 12 months after production date in unopened packaging. Can be used hereafter, technical properties may however, change; for example, the setting time may be extended.


Areas of Application

Indoor Areas
Indoor Floor
Indoor Wall
Wet Room
Dry room
Outdoor Areas
Outdoor Floor
Outdoor Wall
Lightweight concrete
Levelling compound
Heated floor


3,4-3,9 L

water +

25 kg



Average: 1,8 kg /m² /mm
Layer Thickness
1-40 mm
Working Time and Temperature

Working temperature:


Working Time:

Light load: 6 h
Further treatment: 24 h
Compression strength: 30 N / mm²
Flexural strength: 5 N / mm²

Dimensions and packaging

25 kg bag


6990 betodeck DS
Technical Data Sheet
6990 betodeck DoP
Declaration of Performance
6990 betodeck EC1
EC1 Licence
6990 betodeck M1
M1 Emission Classification
M1 Emission Classification
M1 Emission Classification
6990 betodeck SDS
Safety Data Sheet
Terraces and balconies

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Packaging Details

ImageProductEANCodeX (mm)Y (mm)Z (mm)Neto Weight (kg)Bruto Weight (kg)Best Before (Days)
mira 6990 betodeck, 25 kg57019146990015069904502601002525.11365