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Damp Proof Liquid Membrane - Black Jack DPM - 25 Litres

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£89.99 Incl. VAT
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Black Jack DPM is a ready to use, odourless, rubber enriched bitumen emulsion which provides a highly effective sandwich damp-proof membrane for floors. Also acts as a waterproofer for walls, above ground structures and foundations. May be used internally or externally. Black Jack DPM is also suitable for use as an adhesive for wood block, mosaic panels, insulation boards, expanded polystyrene, cork and as a plaster bonding agent, even on difficult surfaces.

Black Jack DPM is commonly used in the following areas :

  •  Providing sandwich damp-proof membranes for floors.
  • General Waterproofing: - for use on concrete, fibre/cement, render, plaster etc.
  • For waterproofing structures such as bridge abutments, retaining walls and culverts.
  • For fixing wood blocks and wooden mosaic flooring
  • As a bonding agent  for plastering difficult substrates such as glazed tiles
  • For fixing insulation boards, expanded polystyrene and cork slabs.
  • As a curing agent for concrete.

Store in original container in cool, dry conditions.
Protect from frost.

Shelf life
24 months from date of manufacture when stored according to manufacturers instructions.

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Questions & Answers


Can this product be used on the outside of a stone wall where there are problems due to the outside ground level being above the internal floor level?


100% Yes


We need to apply a damp course coating to our structural steels that are below current dpm. Is this product suitable to paint directly onto steels


Good Afternoon Darren

Thank you for the enquiry and we really appreciate you shopping with us here at Roofing Superstore.

Unfortunately, this product would be no good on steals and we don't have any products on the system that would be able to help you. Im really sorry but we can't help you with this one


once cured can this be painted over


You would not be able to paint over this.


Hello can this be put directly onto brick inside a garage? Also is this okay to be sprayed on or does it have to be painted? Thank you


This is fine to use both indoors and outdoors, only suitable for brush application I am afraid. If you click on the PDF data sheet on this page it has a lot more info for you.

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5 / 5 1 reviews
2nd March 2020
Used this to damp proof a floor on top of floor leveling compound. The product went on well with a roller. Used two coats and then a third coat to stick down EPS insulation. Seemed to work well. Time will tell if it keeps the damp at bay
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Damp Proof Liquid Membrane - Black Jack DPM - 25 Litres

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