MB 2K

Product specifications

Basepolymer binder, cement, additives, special fillers

Reaction to fireClass E (DIN EN 13501-1)

Bulk density of fresh mortarapprox. 1.0 kg/dm³

Consistencypaste-like

Crack-bridging≥ 3 mm (with a dry layer ≥ 3 mm thick)

Layer thickness1.1 mm thick wet layer produces approx. 1 mm thick dry layer ⁽¹⁾

Cross-slit pressure testspassed, even without a layer of reinforcement

Water vapour diffusion resistanceµ = 1755

Water impermeabilitytested up to an 8 m water column

The stated values represent typical product characteristics and are not to be construed as binding product specifications.

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Preparation

Substrate requirements

• The substrate must be clean, dry, flat and capable of bearing a load, and free of dust, oil, grease and release agents.
• Roughen non-mineral substrates.

Preparations

• Remove projecting seams and mortar remains.
• Break off or chamfer corners and edges.
• In coves, embed Tape VF series into the material and smooth to < 20 mm.
• Alternatively, use a suitable mortar to produce a sealing cove.
• Close indentations > 5 mm with a suitable filler or with MB 2K mixed with suitable quartz sand (MR of between 1:1 and 1:3).
• Roughen the surface of plastic pipes with sandpaper; clean and, if necessary, sand metal pipes.
• If necessary, provide damp proofing.
• Prime absorbent mineral substrates with Kiesol MB.
• Apply a scratch coat (approx. 500 g of MB 2K/m²) with the product itself as a contact layer and in order to prevent blisters.

Preparation

Combination container

• Mix the liquid component (component A) with a suitable mixing tool.
• Pour the loosened powder component (component B) completely onto the liquid component.
• Mix for approx. 1 minute before suspending the mixing process to allow the air that has been stirred in to escape.
• Remove the powder adhering to the side.
• Mix again for approx. 2 minutes.
• Keep the mixing tool near the bottom of the bucket while mixing.

Application

Application requirements

• Temperature of the material, air and substrate: from min. +5 °C to max. +30 °C.
• Vertical surface waterproofing
• Apply the product in two layers on the previously prepared substrate.
• Horizontal surface waterproofing
• Apply the product in two layers on the previously prepared substrate.
• After the waterproofing has dried thoroughly, place two layers of PE sheet over the waterproofing before the screed is laid.
• At the edges, the waterproofing layer is applied up to the upper edge of the floor or up to the horizontal barrier.
• Horizontal waterproofing in and underneath walls
• Apply the product in two layers on the previously prepared substrate.
• Connection details/building element joints
• Use the joint tape system to bridge corner and connecting joints, as well as connections to rising components (e.g. full-length windows, doors).
• Apply the product, apply Tape VF over the entire surface and embed so that it is crease-free.
• Pipes passing through walls
• W1-E: seal passing-through pipes by using the product to form a cove around them.
• W2.1-E: use a suitable loose/fixed flange to integrate pipe lead-throughs in the waterproofing material. Alternative: use Remmers pipe flange.
• Use Remmers Pipe Flange in cases where the water load is "pressing water".
• Plinth render
• If render is to be subsequently applied, an additional layer of grout should be spread on to the last layer of waterproofing. SP Prep can then be thrown over the entire surface of the fresh layer of grout.
• Work can be continued with compound mortar and reinforcement mortar after approx. 4 hours without an additional layer of grout/preparatory mortar.
• Follow-up work and coverings
• After 4 hours, work can be continued with adhesive mortar, filling
  mortar or reinforcement mortar.
• Coating
• Direct coating with binder-rich dispersion coats.
• Always set up a trial area/trial areas first.

Application instructions

• In the case of liquid-applied waterproofing materials, direct sunlight and/or wind exposure can cause accelerated skin formation and accompanying blistering.
• Do not use in direct sunlight.
• Do not use on untreated aluminium.
• The scratch layer does not as a rule count as a waterproofing layer.
• The maximum total wet coat thickness must not exceed 5 mm.
• Moving the material (e.g. by stirring) in the mixing bucket can prevent premature skin formation.
• Mortar that has already set cannot be made workable again by adding
  water or fresh mortar.
• Protect the fresh waterproofing layer from rain, direct sunlight, frost and condensation water.
• Once dry, protect from mechanical damage.
• Add a further load-distributing layer if using the product for waterproofing under raised floor supports.
• Ensure sufficient ventilation when applying the product in closed areas (wear respiratory protection if necessary).
• Please contact Remmers Technical Service (phone +49 5432 83900) before applying with machine processing.

Working tools / cleaning

• Mixer, ladle, smoothing trowel, layer thickness trowel, wide brush, surface brush, roller
• Clean tools with water while the material is still fresh.
• Any material that has already begun to dry can only be removed mechanically.

Storage / shelf life

• If stored unopened in its original container in a cool, dry place and protected against frost, the product will keep for at least 9 months.

Usage

• At least 1.1 kg/m²/mm of dry coat thickness
  
  Coat thicknesses and application rate when used as a crack-bridging MWG in interior and exterior areas: see application rate table under application examples.
• Apply to a large enough trial area to determine the precise amount required.

Application examples