HF Bentonite Waterproofing Membrane

Unit price per



Waterproofing membrane, BBA accredited that protects against water ingress in below ground constructions.

HF Bentonite Waterproofing Membrane with Liner

Size: 5m x 1.1m Roll


To be installed as protection against water ingress in below ground constructions.

Applications include concrete foundation protection, backfilled concrete walls, against permanent formwork and diaphragm walls, under structural slabs, over cut & cover tunnels and against existing property line construction.

Vertically, the membrane should always be contained between concrete & the retaining structural element.


HF Bentonite Waterproofing Membrane

HF Bentonite Membrane Type A (BS8102:2009) Waterproofing Membrane, BBA Accredited (Certificate 16/5330) polymer-modified, sodium bentonite geosynthetic clay liner with an LDPE laminated barrier designed to be applied in regular & extreme UK weather conditions, fast & simple application.

HF Bentonite Membrane excels as a leading product in the world of bentonite Geosynthetic Clay Liners. HF Bentonite Membrane, may be used wherever standard bentonite liners have been specified but as it is created using highly polymerised bentonite granules it also provides waterproofing security for constructions on contaminated land and in low-level saline groundwater conditions (always seek confirmation advice for specific site conditions).

5000g of polymer enhanced high swelling sodium bentonite granules per metre² are encapsulated, due to intense needle-punching, between extremely durable & strong polypropylene woven / non-woven geotextiles.

When applied under a concrete slab or within the concrete formwork an intimate mechanical bond is formed between the membrane & the concrete, minimising any possible water tracking. This application process removes the requirement for any weather-dependent primers & protection boards. Vertically, the BentoShield MAX LM membrane may be post applied using soft washer machinal fixings.

HF Bentonite Membrane has a 400-micron virgin polyethylene laminated sheet adhered. This sheet can be sealed using butyl tape to form a comprehensive basic radon barrier. All UK soils emit the hazardous ground gas Radon.

For added security, adjacent membrane laps can be sealed using a Bentopaste fillet or by applying butyl tape along with the polyethylene laminate films.


Free Delivery on orders over £29.99

Standard Delivery: £4.99

Next Working Day Delivery: £6.99

(Order must be placed before 3pm for same day dispatch)


Standard Delivery: Up to 5 working days


Next Working Day Delivery Examples


Order Placed Monday on or before 14:59 

Dispatched Monday 

Delivery Tuesday 

Order Placed Monday on or after 15:00

Dispatched Tuesday

Delivery Wednesday

Order Placed Thursday on or before 14:59 

Dispatched Thursday

Delivery Friday

Order Placed Thursday on or after 15:00

Dispatched Friday 

Delivery Monday 

Orders Placed on Weekends Dispatched Monday Delivery Tuesday



Click and Collect


Click and Collect available within one hour on orders placed between 8am and 3:30pm Monday to Friday (excluding Bank Holidays).

Orders placed outside of this time will be available within the next hour during the above slots. 

You will receive an email when your order is ready to collect. 

Collection Address: Unit 28, Ripley Business Park, Ripley Dr, Normanton Industrial Estate, Normanton WF6 1QT