Non stock item

BAL Flexbone Varied Uncoupling Membrane Per m2


  • Fast-track system: easy filling of bone shaped GripLock Technology and tiling can be carried out immediately after laying the membrane.
  • Excellent adhesive shear strength: 50% better than other cavity uncoupling mats in independent tests.
  • Excellent tensile strength: stops tiles ‘popping-off’ / cracking under pressure.
  • Water vapour pressure compensating: a fleece laminated to the underside compensates for water vapour pressure
  • Waterproof: can be used in internal wet areas.
  • Can be stored for approx: 48 months in dry rooms, away from direct sunlight.


BAL FLEXBONE VAried is a high load bearing, waterproof,  uncoupling membrane. Accommodates lateral movement for tile installations on floors with limited movement. Used as a system with a recommended BAL flexible cementitious adhesive.

Use for

Ideal for the Installation of large format ceramic and porcelain tiles, slabs & natural stone with a minimum edge length of 100mm.

Counteracts and therefore minimises tension stresses between the substrate and the floor to be installed.

Prevents reflective cracking caused by shrinkage cracks, board joints and lateral movement.

Provides crack bridging and allowing a safe installation onto challenging substrates.

Suitable for internal flooring; renovation and new construction, domestic and commercial areas in medium/heavy duty applications.

Suitable for use in most internal floor areas including bathroom and kitchen.

Recommended for heated floors, new cement screeds, timber floors and existing floor surfaces.

Restrictions: NOT suitable for

  • Exterior environments
  • Substrates with deflection (vertical movements).
  • Use on parquet flooring.
  • Bridging movement joints.
  • Use with agglomerated stone tiles that exhibit a tendency to curl. Seek further guidance from the tile manufacturer.

More Information

MPN 21679
Brand BAL
Colour Grey
Material Other Materials
Pack Size 20m Roll (Sold per sqm)
Type Tile Membrane
Width (mm) 0

Technical Info

Delivery Costs:

Delivery fees are calculated based on the weight of your order and your delivery location. You can use the delivery fee calculator in your basket or on the checkout page to find the exact cost.

Delivery Area:

We currently only deliver to UK Mainland and the Highlands. We do not deliver to the Islands, Ireland, or Northern Ireland.

Next Working Day Delivery (Subject to Stock Availability):

Orders placed before 12:00 pm (noon) will be delivered the next working day, excluding weekends and holidays. This service starts from £6.50 (including VAT) and the final cost is based on the weight of your order and your delivery location. You can check the exact cost in your shopping cart or on the checkout page by entering your postcode.

Economy Service (2-3 Working Days):

This service is only available for orders over 50kg. There is no additional charge for this service.

Sample Orders:

All sample orders are shipped for free via Royal Mail Tracked 48 or 24 service. Delivery typically takes 1-3 working days.

Delivery Methods:

Non-sample orders under 50kg will be dispatched via DPD or APC Overnight. Non-sample orders over 50kg (quarter, half, and full pallets) will be dispatched via Palletways or Kandrmason.


Simply place your order online and choose the Click & Collect option at checkout.
We'll email you once your order is ready for pickup at your chosen store.
Collection hours: Monday - Friday: 8:30 am to 4:30 pm

For more information, please visit our Delivery Information page.

- Please inspect your order for any damages upon delivery and notify us immediately if you find any.

- We will replace any items that are damaged during transit.

- We accept returns within 30 days of delivery.

- Please note that customers are responsible for the cost of returning items.

- We will process returns and refunds promptly once the items are received at our warehouse.

Returning Trims
Schluter Trime
Returning trims - 35% restocking fees applied.
Returnign trim with replacement - 15% restocking fees applied
Customers are responsible to arrange returning the item.
If we arrange a return colleciton, a £35 return item collection feed will be applied.

Mapei-Profilpas Trims
A 20% restocking fee will be applied. (Item must be in re-sellable condition)
The customer is responsible for returning the item.

For more information, please visit our Return & Exchange page.


Product Questions