One-component, solvent-free, water-tight seal for horizontal and vertical surfaces.

  • Ready to use (one-component, no mixing required)
  • Low viscosity product
  • Solvent-free
  • Isocyanate free
  • Contains no Dibutilin particles
  • Excellent workability
  • Water vapour permeable
  • Temperature resistant from -40 ° C to +90 ° C
  • Excellent adhesion to many substrates such as concrete,
    wood, ceramic, metal and much more, also without a primer
  • Adheres to old and wet surfaces
  • Good gap bridging
  • Outstanding resistance to chemicals
  • Good UV- and weather resistance
  • Can be painted over
  • Cures at room temperature
  • Easy to work at + 5 ° C to + 40 ° C
  • Short curing times
  • No subsequent surface stickiness
MD LIQIUD BLOCK is a universal seal for the most diverse areas, such. as roofs, walls, wet cells. For vehicles as a complement to underbody protection and as a spreadable seam sealant. The manufacture of waterproofing for roof lights, skylights, gutters, pipe junctions, wall connections, chimney connections, outdoor ventilation etc. waterproofing balconies and terraces under tiles and coverings is easily possible. Waterproofing of cracks and fractures in masonry. MD LIQIUD BLOCK suitable for substrates such as Styrofoam, plastics, concrete, wood, stone, metal, sanded roofing felts. MD LIQIUD BLOCK provides a crack-bridge of at least 10 mm, it is UV resistant and not sensitive to rain and spray water (even during curing).

The surfaces must be firm, sound and free of contaminant matter (dust, oil, dirt etc.). Remove all residues of previous coatings thoroughly. MD LIQIUD BLOCK has excellent adhesion to many construction materials such as concrete, glass, plaster, ceramics, tiles, wood, and various metals such as aluminium, steel, zinc and copper. Does not discolour metals, even those that are not painted. Bitumen can cause discolouration. Please always carry out preliminary tests! MD LIQIUD BLOCK can also be used without primer on damp surfaces, however, not in standing water. MD LIQIUD BLOCK can be used directly from the container, only stirring is required prior to application. It can be applied with a roller or brush/wide paint brush to a thickness of 2 coats of 1 mm. After drying, a layer thickness of about 2 mm should have been achieved. Apply the second layer after the first layer if completely dry (about 3 hours at 23 ° C and 50% relative humidity). After 12 hours (at 23 ° C and 50% relative humidity) the treated area is completely dry and downstream activities can be resumed. Temperature variations and / or changes in humidity can cause delayed curing. Use approx. 1.4 to 2.0 kg/m2. Connection and expansion joints must be properly prepared in order to achieve optimal results. Professionals Backfill material is unavoidable here (for example, for extrusion foamed polyethylene). For optimum elasticity of the sealant over the joints go to 2: 1 or max. 1: 1 width / depth ratio of the joint (minimum joint width 6 mm, maximum 20 mm).

Packaging/Article number
MLB.G.D1 - 1,2 kg - VE 10 tin
MLB.G.E7 - 7 kg - VE 5 bucket
MLB.G.E14 - 14 kg - VE 1 bucket
MBL.G.K220 - 220 g - VE 9 cartridge
MLB.G.K440 - 440 g - VE 20 cartridge
Liquid Block Anwendung
Liquid Block Anwendung

Marston Domsel GmbH

Marston Domsel Klebstoffe und Dichtmittel

Your partner for sealing, adhesive, safety and fixing systems. Quality products Made in Germany.

Imprint/Legal Notice



Bergheimer Str. 15

53909 Zülpich, Germany

+49 (0) 2252 94 15 0

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