Grooved XPS panels with mortar-coated surfaces
This tile backer board uses an XPS foam core with preformed pipe grooves and a mortar coating described as approximately 1 mm on either side. It is a coated-panel option for underfloor heating enquiries, distinct from aluminum-faced heating panels.
The published range lists 20–50 mm overall thickness, a 1200 × 600 mm panel size and groove options for 16 mm or 20 mm pipe, with customization available for discussion. Confirm the selected pipe diameter and groove layout before ordering.
Published specifications
| PROPERTIES | SPECIFICATIONS |
| Thickness of Mortar Layer | About 1mm |
| Total Thickness of Products | 20mm-50mm |
| Panel Size | Length: 1200mm Width: 600mm or Customized |
| Size of Grooves | Apply to φ16mm / φ20mm pipe or Customized |
| Groove Pattern | Could be customized |
| Density of XPS Foam Board | 30-45kg/m3 |
| Thermal Conductivity at 10℃ | 0.030-0.036w/m.k |
| Compressive Strength (10% Deflection) | 300KPa++ |
| Tensile adhesive strength | 0.5MPa++ |
| Water Absorption (2-days immersion) | 0.2% by volume |
| Water Vapour Permeability,ng(m.s.Pa) | 1.50% |
| Flammability of XPS Foam Board | B2 Grade |
Request the current datasheet and test methods for the selected configuration. The water-vapour permeability entry contains inconsistent units in the published table and requires confirmation; do not use that entry for design calculations. Confirm the applicable fire-classification standard and report as well.
Confirm the complete floor assembly
- Pipe layout: diameter, groove pattern, spacing and turning details.
- Base: substrate condition, panel fixing or bonding method and support requirements.
- Layers above the panel: any required filling, covering or load-distribution layer.
- Floor finish: tile, adhesive or other finish compatibility with the complete heating system.
- Wet areas: joints, penetrations and connections to the specified waterproofing system.
Do not assume that tiles, wood, laminate or carpet can be installed directly on every configuration. Confirm the matched installation instructions and performance requirements; heating response and temperature distribution depend on the system design.
Specify grooved boards for a trade order
For heating-system suppliers, distributors and project buyers, the pipe layout is as important as board thickness. A quote for a grooved board should identify the groove arrangement and the proposed floor assembly.
- Panel dimensions: required length, width and total thickness; identify any sizes outside the published range.
- Pipe and routing: pipe outside diameter, spacing, straight runs, turns and any layout drawing.
- Order schedule: pieces or square metres for each panel pattern, including separate quantities for different layouts.
- Floor construction: substrate, fixing method, covering layers and intended finish.
- Delivery and approval: destination, target date, packing preferences and required test documents.
Confirm groove dimensions against the actual pipe specification and approve the panel layout before bulk ordering. Ask for sample arrangements, minimum order quantity and lead time for the selected configuration.
Request a grooved XPS backer board quotation and include your floor plan and quantities.
Compare coated and aluminium-faced constructions
If you need a coated board without routed pipe channels, see the cement-coated XPS tile backer board. Browse the tile backer board range for other project requirements.
Compare the aluminum-faced XPS radiant panel or XPS core tile backer board for wet areas against the proposed construction.




