The ultimate tanking solution for bathrooms, showers and wet rooms. BW1 is a no-fuss option that’s so easy to use – it’s a fast-curing indoor waterproofing membrane that requires no priming, dramatically reducing both the time and cost of installation.
Based on C-TEC’s unique TRIBRID® Technology with an advanced polymer formulation, BW1 delivers enhanced bonding strength and incredible flexibility. It’s compatible with most substrates commonly used in bathroom construction such as concrete, brick, wood, plasterboard, fibre cement board and foam backer board.
Chemically enhanced to prevent and inhibit the development of mould and fungal growth, it can be used in conjunction with BT1 to provide a lasting solution for healthier bathrooms.

• Waterproofing solution – for bathrooms, showers and wet rooms
• Incredible bonding – for use with multiple substrates
• Ready to use – no mixing or dilution needed
• No priming required – saves time and cost
• TRIBRID® Technology – advanced polymer formulation
• VOC and solvent-free – incredibly easy to install

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.