SwellMAX Waterstop - QuellMax Blackstop For Waterproofing Joints in Reinforced Concrete Structures

Save £107.60 inc. VAT

Size: SwellMAX Waterstop QuellMax Blackstop 20MM X 25MM (30MTS IN A BOX)
Sale price£196.00 inc. VAT Regular price£303.60 inc. VAT



SwellMax Waterstop is a waterbar made from bentonite which is activated by the alkaline in fresh concrete. It reacts with water and swells to prevent water ingress through the joints in reinforced concrete structures. Ideal for use in vertical and horizontal joints in precast concrete wall panels, shield-driven tunnels, such as subways, water supply and sewage systems and concrete slabs in basements.

  • Independently tested for use up to 7 Bar of water pressure
  • Suitable for use in non-movement construction joints in-situ in reinforced concrete
  • Suitable for vertical and horiztonal applications
  • No sticky protection tape to be removed prior to use
  • May be installed using adhesive of fixing rail
  • Up to 500% swelling capacity
  • WRAS Approved - Can be used in contact with potable water
  • Reversible expansion process
  • Indefinite shrinking and swelling process, even decades after installation

SwellMAX Waterstop - Waterproofing Joints in Reinforced

TDS SwellMax Waterstop WPTDS26 2019 03

Product Description SwellMAX Waterstop
Product Code SWELLMAX20
Packaging and Size 20 mm x 25 mm
Coverage 30 m (each pack contains 6 x 5 m rolls)
Storage Store in dry conditions, protected from direct sunlight, forst and water, in temperatures > 5°C and < 70°C. Please note once wet this product will swell and will not return to original size.
Life Expectancy 3 years when stored correctly.

Payment & Security

Payment methods

American Express Apple Pay Diners Club Discover Google Pay Maestro Mastercard PayPal Shop Pay Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.


Clever Shield Coatings Safe Checkout Guaranteed

You may also like

Recently viewed