12.5mm Knauf Aquapanel Interior Cement Board delivers exceptional durability and water resistance with a glass fibre-reinforced construction. Engineered for wet and humid indoor environments, this cement tile backer board prevents mold and mildew whilst maintaining structural integrity even when fully saturated.

Product specification

• Brand: Knauf®
• Model: 12.5mm AQUAPANEL Indoor
• Weight: 31.68 kg
• Dimensions: 2,400mm x 1200mm x 12.50mm
• Length: 2400mm
• Material: Fibre-Cement
• Profile: Render Carrier Board
• Thickness: 12.5mm
• Width: 900mm
• Fire Reaction: Class A1 Non Combustible
• Coverage: 2.88m2
• Fire performance: Class A1
• Finish: Smooth
• Durability: Minimum 30 years
• Applications: Drywall for wet areas
• Type: tough impact and water resistant glass fibre reinforced cement tile backer board
• Fixing method: Self Drilling Fixings
• Features: Aquapanel Interior Cement Render Board
• Manufacturer: Knauf AQUAPANEL®

This 12.5mm tile backer board excels in bathrooms, shower rooms, and wet rooms where moisture exposure is constant. Unlike traditional backing materials, Knauf Aquapanel Interior resists water damage and deterioration, eliminating expensive remedial work from failed installations. The pre-keyed surface accepts tiles up to 50 kg/m² immediately after installation, whilst self-drilling screws enable straightforward fitting without specialist equipment.

Benefits

1. BBA certified (certificate number 09 / 4633)
2. Simple score and snap technique
3. Does not contain MgO and is NHBC, LABC and Premier Guarantee approved
4. A1 fire-rated in accordance with EN 13501-1

Application

Knauf AQUAPANEL Indoor Cement Board provides a solid, moisture-resistant base that withstands demanding weather including wind, rain, and snow exposure. When taped and jointed, the board can remain unfinished for up to six months, enabling rapid building envelope closure and maximising project efficiency during tight construction schedules.

Coverage

1. 900 x 1200 x 12.5mm or 1.08m² per board
2. 900 x 2400 x 12.5mm or 2.16m² per board
3. Fixings on 600mm centered supporting framework, with a maximum of 250mm centers: 15 screws per m²

Tile Failure - Why does it happen?

Tile failure proves costly when traditional substrates fail, requiring complete replacement of both tiles and backing materials. With Aquapanel Indoor, tile or grout failure typically demands only targeted repairs since water ingress does not compromise the tile backing board.

Tile failure occurs when moisture penetrates the substrate due to:

1. Water spills during plumbing installation
2. Unseen leaks in pipework within the wall
3. High-pressure water from power showers damaging grout and allowing water seepage
4. Condensation along pipework within the wall soaking into the substrate

Installation

More Information on 12.5mm Knauf Aquapanel Indoor Cement Board

• Manufaturer Link: 12.5mm Knauf Aquapanel
• Browse our complete Knauf Insulation range and refine by thickness or coverage using the filters on the left. For project suitability advice or bulk pricing enquiries, contact us on +4402038839057 , email sales@insulationbee or use Live Chat - Best value Knauf Aquapanel Insulation in the UK.