The smart solution for warm floors
The Dural Durabase CI-H Decoupling Matting is designed to simplify the installation of loose electric underfloor heating cables while providing a waterproof, crack-isolation layer. Perfect for tiled floors and walls, it ensures long-lasting performance and prevents damage from subfloor movement.
This yellow studded mat allows flexible heating layouts so installers can position cables only where heat is needed, avoiding wasted energy under fixed furniture or sanitaryware. When combined with Dural sealing tape, it creates a fully waterproof barrier, making it ideal for wetrooms and bathrooms.
The stud design accommodates cables between 2mm and 4.5mm in diameter, holding them securely in place with a smooth bending radius that complies with all major cable manufacturers’ guidelines. Lightweight yet durable, the matting is quick to install, saves time on site, and reduces costs by allowing precise cable placement.
Key Benefits
- Decouples and prevents tile cracks from subfloor movement
- Provides full waterproofing when used with sealing tape
- Flexible cable layout for efficient heating coverage
- Quick, easy installation with no special tools required
- Time and cost savings on every project
- Distributes point loads to protect tiled surfaces
- Low installation height of just 5.5mm
Technical Specification
| Material | Polyethylene |
| Colour | Yellow |
| Width | 1m |
| Thickness | 5.5mm |
| Weight | 700 g/m² |
| Working Temperature Range | -40°C to +80°C |
| Backing Fleece Weight | 70 g/m² |
| Stud Shape | Rounded square (1024/m²) |
| Compressive Strength | 60 t/m² |
| Breaking Load (Longitudinal) | 620 N/50mm |
| Breaking Load (Transversal) | 550 N/50mm |
| Ultimate Elongation (Longitudinal) | 50% |
| Ultimate Elongation (Transversal) | 50% |
| Crack-Bridging Ability | >= 1mm |
| Air Volume for Vapour Management | ±2.2 L/m² |
| Shelf Life | 2 years (dry storage, away from heat/sunlight) |
FAQs
What is the main purpose of Dural CI-H matting?
It decouples tiled surfaces from the subfloor to prevent cracking, while also holding underfloor heating cables securely in place.
Can I use this in wetrooms?
Yes, when combined with Dural sealing tape, the matting provides a fully waterproof installation suitable for bathrooms and wetrooms.
What size heating cables does it support?
The stud design accommodates electric heating cables between 2mm and 4.5mm in diameter.
Does it add much height to the floor?
No, the matting is only 5.5mm thick, making it ideal where low build-up is required.
Is it suitable for all tile adhesives?
Yes, it can be used with any tile adhesive recommended for underfloor heating systems.
- Ensure the substrate is stable and level. Carry out any levelling work before installation.
- Cut the matting to size, leaving a 5–10mm perimeter expansion gap filled with insulation strip.
- Prime the substrate and apply tile adhesive with a 6x6mm notched trowel.
- Lay the mat fleece-side down into the adhesive and press in firmly.
- Once dry, place heating cables into the studs following manufacturer guidelines.
- Seal joints with Dural joint tape and cover with adhesive.
- Apply tile adhesive using the buttering-floating method and lay tiles as normal.
Delivery Times
Delivery times for all delivery services are Monday to Friday (excluding Bank Holidays) 8am - 6pm. A 'working day' is Monday to Friday, excluding bank holidays. Weekends and bank holidays do not count as working days.
Delivery Costs
For information on delivery costs, please visit the main Delivery page.
Delivery Damages
It's important that you indicate the damages on the delivery note when you sign for the goods. Notify The London Tile Company by calling our advice line on 0333 320 80 48 if there are any damages or irregularities to your order within 24 hours of delivery.
