MULTIBETON MB-DEP Pro MB Thin Screed Instructions

: June 15, 2024
: MULTIBETON

Table of Contents

MULTIBETON MB-DEP Pro MB Thin Screed
Specifications
Product Usage Instructions
Technical data
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

MULTIBETON MB-DEP Pro MB Thin Screed

Specifications

Areas of application: For the production of sloping fillers up to 4% as well as for smoothing, leveling, filling, and repairing subfloors on floors indoors and outdoors.
DGNB Highest quality level 4 according to DGNB criterion ENV 1.2 Risks for the local environment.
LEED Meets LEED requirements in IEQ Credit (4.1) Low Emitting Materials.
Composition: Special cement, mineral aggregates, dispersible polymers, and additives.
Container type : Paper bag
Delivery unit: 25 kg
Shelf life : Min. 12 months
Mixing water
Colour: Grey
Processing temperature
Processing time: Approx. 30 minutes*
Accessible
Covering ready after ca. 3 hours*
Fire classification: A1fl according to DIN EN 13 501-1
Compression strength class : C 30 according to DIN EN 13 813
Bending tensile strength class F 5 according to DIN EN 13 813

Product Usage Instructions

Preparation
Prior to using MB Thin screed Pro MB-DEP, ensure that the substrate is clean, dry, and free from any loose particles or contaminants. Prime the substrate if necessary.

Mixing

Pour 4.0 – 4.5 liters of cold, clean water into a clean container.
Sprinkle in the bag contents (25 kg) while stirring vigorously to avoid lumps.
Use a mixer with a putty stirrer and mix until a creamy,lump-free mass is achieved. Do not mix too thinly.

Application

Pour the mixed compound onto the primed substrate.
Spread the compound evenly using a smoothing trowel or a large-area squeegee.
If possible, apply the required layer thickness in one working step.
If necessary, use prepared gauges to draw off the slope.

Drying and Finishing
Before placing the topsoil or another leveling layer, a cleaning sanding must be carried out. Allow the applied MB Thin screed Pro MB-DEP to dry completely for a minimum of 24 hours to avoid stains caused by moisture.

Disposal
If possible, collect and reuse product residues. Do not allow them to enter drains, water courses, or soil. Emptied, free-flowing paper containers can be recycled. Collect product residues, mix with water, allow to harden, and dispose of as construction site waste.

FAQ

Q: What is the shelf life of MB Thin screed Pro MB-DEP?
A: The shelf life is a minimum of 12 months.
Q: What is the recommended layer thickness forapplication?
A: The recommended layer thickness ranges from 1 mm to 15 mm, depending on the desired result.
Q: Can MB Thin screed Pro MB-DEP be used outdoors?
A: Yes, MB Thin screed Pro MB-DEP can be used on floors indoors and outdoors.

Areas of application
For the production of sloping fillers up to 4 % as well as for smoothing, levelling, filling and repairing subfloors on floors indoors and outdoors.
DGNB
Highest quality level 4 according to DGNB criterion ENV 1.2 Risks for the local environment.
LEED
Meets LEED requirements in IEQ Credit (4.1) Low Emitting Materials.

Suitable for/on

the production of even, firm laying substrates for ceramic tiles, slabs natural stone coverings, etc.,
Residential and commercial areas with normal stress,
Damp rooms (with subsequently bonded waterproofing) according to DIN,
Calcium sulfate and cement screeds,
Concrete,
old tile, slab, and terrazzo coverings,
new mastic asphalt screeds (max. 5 mm layer thickness),
old substrates with firmly adhering waterproof adhesive and filler residues.

Product advantages/features
MB Thin Screed Pro (MB-DEP) combines high strength with the best processing properties. The leveling compound is pumpable and produces a smooth and even surface.

Layer thickness range from 3 – 50 mm,
self-smoothing,
for slopes up to approx. 4 %,
quick setting,
low tension,
high compressive and flexural strength,
waterproof and frost-resistant.

Technical data

Container type paper bag
Delivery unit 25 kg
Shelf life min. 12 months
Mixing water 4,0 – 4,5 l per 25 kg bag
Colou r grey
Processing temperature + 5 °C to 25 °C at ground level
Processing time approx. 30 minutes*
Accessible after 2 – 3 hours*
Covering ready after ca. 3 hours*
Fire classification A1fl according to DIN EN 13 501-1
Compression strength class C 30 according to DIN EN 13 813
Bending tensile strength class F 5 according to DIN EN 13 813 at 23 °C, 50 % relative humidity, 10 mm layer thickness

Composition
Special cement, mineral aggregates, dispersible polymers, and additives.

Seal of quality & eco-labels

GISCODE ZP 1/poor in chromates according to EU-VO 1907/2006 (REACH)
EMICODE EC 1 R PLUS/very low emissions

Subsoil preparation

The subsoil must be solid, dry, load-bearing, free of cracks, and free of substances that impair adhesion. Check the subsoil in accordance with the applicable standards and data sheets and raise concerns in case of defects. Calcium sulphate screeds must be sanded and vacuumed, either by the screed layer as a finishing treatment or as a special service by the tiler. Brush, grind, mill or shot-blast surfaces with weak or unstable adhesion. Thoroughly vacuum off loose parts and dust. Select a suitable primer (e.g. primer FLS) depending on the type and condition of the substrate. Allow the primer to dry thoroughly. Observe the product data sheets of the products used.

Processing

Pour 4.0 – 4.5 l of cold, clean water into a clean container. Sprinkle in bag contents (25 kg) while stirring vigorously and mix to a creamy, lump-free mass. Use a mixer with a putty stir-rer. Do not mix too thinly.
Pour the compound onto the primed substrate and spread evenly with a smoothing trowel or large-area squeegee. If possible, apply the required layer thickness in one working step. If necessary, draw off the slope on prepared gauges.
Before placing the topsoil or another leveling layer, a cleaning sanding must be carried out.

Covering ready

For ceramic tile coverings* after approx. 12 hours at 20 mm layer thickness
For natural stone coverings*, wait for the trowel coat to dry completely (min. 24 hours) due to the risk of stains caused by moisture.

at 23 °C, 50 % relative humidity

Consumption

Layer thickness consumption
1 mm 2.0 kg/m²
7 mm 14.0 kg/m²
15 mm 30.0 kg/m²

Important notes

When using in underwater and permanently wet areas, obtain technical advice.
Shelf life is at least 12 months in original containers when stored in a dry place. Tightly seal opened containers and use the contents quickly.
Best applied at 15 – 25 °C and relative humidity below 75 %. Low temperatures, high humidity, and high layer thicknesses delay, high temperatures accelerate hardening, drying and rea-diness for laying. In summer, store in a cool place and use cold water.
The minimum room or processing temperature must be 10 °C.
The installed surface must be covered with suitable coverings, e. g. tiles, natural stone or sealed with epoxy sealants.
Attach the 8 mm wide self-adhesive edge insulation bands FLS to rising building components.
The MB Thin Screed Pro (MB-DEP) can be mixed and pumped with continuously mixing screw pumps.
For layer thicknesses over 20 mm, up to 40 wt.% expanding sand or screed sand (grain size 0 – 4 mm or 0 – 8 mm) can be added to the compound.
Protect freshly applied surfaces from draughts, sunlight, heat and moisture. Cementitious filler layers tend to crack on soft or post-adhesive substrates. These soft or post-adhesive layers must therefore be removed as much as possible before level-ling.
Leaving such filler layers open for too long also promotes such cracking and should therefore be avoided.
The following documents are applicable or recommended for special attention, among others
- DIN 18 352 “Fliesen- und Plattenarbeiten“
- DIN 18 157 “Ausführung keramischer Arbeiten im Dünnbett-verfahren“
- DIN 18 202 “Allgemeine Toleranzen im Hochbau“
- ZDB leaflets:
“Verbundabdichtungen“
“Beläge auf Zementestrich – beheizt“
“Beläge auf Zementestrich – unbeheizt“
“Beläge auf Calciumsulfatestrich“
“Außenbeläge“
- BEB leaflet: “Beurteilen und Vorbereiten von Untergründen“
- BVF leaflet: “Schnittstellenkoordination bei beheizten Fußbodenkonstruktionen“.

Occupational and environmental safety
Contains cement, low in chromate according to EU regulation 1907/2006 (REACH) – GISCODE ZP 1. The cement reacts strongly alkaline with moisture, therefore avoid contact with skin and eyes, if necessary rinse immediately with water. In case of skin irritation or eye contact, seek medical advice. Wear protective gloves. Wear a dust mask when mixing. In hardened, dried state physio-logically and ecologically harmless. The basic prerequisites for the best possible indoor air quality after floor covering work are installation conditions that comply with standards and well-dried substrates, primers, and leveling compounds.

Disposal
If possible, collect and reuse product residues. Do not allow to enter drains, water courses, or the soil. Emptied, free-flowing paper containers can be recycled. Collect product residues, mix with water, allow to harden and dispose of as construction site waste.

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