Sika Black Jack DPM is a rubberised bitumen emulsion suitable for interior and exterior use. It’s a highly effective sandwich damp proof membrane for floors, but equally reliable as a waterproofer for walls, above ground structures and foundations.
Black Jack damp proof membrane dries black and forms an impervious barrier to water and water vapour on most surfaces – it’s ideal for general waterproofing jobs on fibre cement, render or plaster.
This versatile DPM can also be used as an adhesive for fixing wood blocks and wooden mosaic flooring, as well as insulation boards, expanded polystyrene and cork slabs. It can even be used as a bonding agent for plastering difficult substrates, or as a curing agent for concrete.

• Weatherproof protection – effective damp proof membrane for floors
• Waterproofing – for walls, above ground structures and foundations
• Dries black – drying time of 4-6 hours depending on conditions
• Good coverage – a yield of approximately 6-10m² per 5L tin
• Versatile – can also be used as an adhesive or bonding aid
• Hazard safety codes – Xi, R34/R35, R36, R37, R38, R50

Delivery (UK mainland only)

 

Next Day: £5, or FREE over £40

- Order by 9pm Mon-Thu: next working day

- Order Fri to 5pm Sun: Monday

- Order after 5pm Sun: Tuesday

 

Pre-12pm: £10

- Same cut-offs as Next Day above

 

Saturday & Sunday: £10, or £5 over £40, or FREE over £75

- Saturday: order by 6pm Fri

- Sunday: order by 4pm Sat

 

Heavy items (over 30kg)

- Mon-Fri only. Order by 6pm and allow up to two working days

- Order after 6pm Thu: arrives after the weekend

 

Supplier items

- Sent directly by the supplier, so timings vary. Lead times appear on the product page in working days (Mon-Fri)

 

More about delivery 

Next Business Day Collection (eligible items)

- Order by 9pm Mon-Thu: collect next day

- Order after 9pm Thu to 5pm Sun: collect Monday

- Heavy items (over 30kg): allow up to two working days

 

Opening hours

- Weekdays vary by branch: open 6:30am-7am, close 6pm-8pm

- Saturday: 7am-6pm

- Sunday: 9am-4pm

 

Check your local store's hours and that it's open before visiting. Please wait for our text or email before collecting.

 

Holding your order
We'll hold it for 14 days, then automatically refund your original payment method.