Rasco 1K PMBC low shrinkage S

Single component, polymer-modified bitumen thick coating (PMBC) with polystyrene, for waterproofing of structures below ground in accordance with EN 15814 and DIN 18533 - also against water under pressure

Protects underground structures according to DIN 18533 part 3 permanently against W1-E (ground damp and pressure-free water), W2.1-E (moderate action of pressing water = 3 m immersion depth), W3-E (pressure-free water on earth-covered ceilings) and W4-E (splash water and ground damp at wall base).

It can be applied to vertical and horizontal surfaces, foundation slabs, foundations and cellar walls. Can be used on all known and suitable mineral substrates.

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  • Solvent-free and environmentally friendly
  • Filled with polystyrene
  • Crack-bridging and flexible
  • Easy processing
  • Good stability
  • Seamless hard-drying
  • Applicable by trowel
  • Resistance to all aggressive substances that occur naturally in soils
  • Ready to use
  • Impervious to radon
  • Very good application when sprayed with suitable airless spraying equipment
  • Frost-free at least 12 months shelf-life

Technical Data

  • Density 0.65 kg/l
  • Material shrinkage 16%
  • Complete hardening /
  • full loading capacity* 4 days
  • Rain resistance after* 3-4 hours
  • Working and drying temperature** +5°C to +30°C

Packaging Unit

  • 1,000 l container
  • 30 l bucket | 18 buckets / pallet, pallet weight approx. 400 kg
  • 10 l bucket | 44 buckets / pallet, pallet weight approx. 350 kg

* These times may vary greatly, depending on humidity, temperature, coating thickness and
substrate. Times are based on the standard climate of + 23 °C and 50 % relative humidity
** Temperature: component, installation and ambient temperature

Water influence classesMDLTWLTConsumption
W1-E (ground damp and pressure-free water)3 mm3.57 mm3.57 l/m²
W2.1-E (moderate action of pressing water ≤ 3 m immersion depth)4 mm4.76 mm4.76 l/m²
W3-E (pressure-free water on earth-covered ceilings)4 mm4.76 mm4.76 l/m²
W4-E (splash water and ground damp at wall base)3 mm3.57 mm3.57 l/m²
Scratch coating--1-2 l/m²

The consumption rates shown are minimum values. A separate professional levelling of the substrate, for example by a scratch coating is expected. According to DIN 18533 part 3, a layer thickness addition of at least 25% of the minimum dry layer thickness is to be added. MDLT = Minimum dry layer thickness, WLT = Wet layer thickness


Technical Service
+49 5237 608-119 oder
+49 5237 608-138

+49 5237 608-139

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