System board with UHP 302FP fabric

Product detailed description

Underfloor heating systems require precise thermal insulation and structured pipe routing to ensure even heat distribution and system efficiency. The HPW® UHP302FP system board serves as a base layer in such systems, supporting the installation of heating pipes and providing insulation. This panel is commonly used in residential buildings, renovations and commercial projects where underfloor heating is integrated beneath screed, tiles or floor coverings. The rigid structure ensures dimensional stability during installation and curing phases.

Installers working with wet underfloor heating systems need to account for thermal expansion, insulation continuity and pipe spacing. The UHP302FP board is designed to support the mechanical and thermal requirements of these systems, while the textile overlay aids in securing the pipe layout. It is particularly suited for applications where a structured pipe arrangement is required and where the system must meet thermal performance standards.

Technical parameters

Packaging	10 m²
Overlap on longer side	2 cm
Hardness	100 kPa
Weight	1 kg
Code	UHP302FP
Brand	HPW®

The 30 mm thickness provides sufficient insulation while maintaining compatibility with standard underfloor heating pipe diameters. The 10 x 10 cm grid spacing ensures consistent pipe placement, which is essential for even heat distribution. The 2 cm overlap on the longer side facilitates seamless panel joining and minimises thermal bridging between adjacent sheets.

Installation and connection

The installation process begins with a clean, level subfloor. The UHP302FP panels are laid out in rows, with the 2 cm overlap on the longer side ensuring proper alignment. The polypropylene textile grid is used to secure the heating pipes at the specified spacing. Once the pipe layout is complete, the system is pressure-tested before pouring the screed. Key installation checks include verifying the flatness of the subfloor, ensuring the panels are correctly overlapped and confirming that the pipe layout matches the design plan. Common mistakes include incorrect grid orientation, insufficient overlap and failure to secure the pipes properly within the textile matrix. These can lead to uneven heat distribution or pipe movement during the curing process.

Compatibility and accessories

The UHP302FP system board is compatible with standard underfloor heating systems using PEX or PE-RT pipes. It requires additional components such as manifolds, insulation tape and expansion joints, depending on the system configuration. No alternative or related products are recommended for use with this board.

Technical background for designers

The board consists of expanded polystyrene (EPS) with a laminated polypropylene textile overlay. The EPS provides thermal resistance, while the textile offers a structured surface for pipe mounting. The 10 x 10 cm grid ensures uniform spacing, which is critical for maintaining consistent heat output across the floor area. The rigidity of the panel contributes to system stability, reducing the risk of pipe displacement during screed application. Long-term performance depends on correct installation, including proper overlap and secure pipe fixation. The material’s low density and high compressive strength make it suitable for use under thin-layer screeds and heavy floor finishes.

Service and operation

No specific service intervals are provided for this product. Routine system checks should include monitoring for pipe leaks, verifying the integrity of the textile overlay and ensuring that the panel remains undamaged during subsequent renovations. Any visible damage to the panel or textile should be addressed before reactivating the heating system.

Frequently asked questions

Can the UHP302FP be used with radiant floor heating systems?
Yes, the board is specifically designed for underfloor heating systems and supports the installation of heating pipes with a 10 x 10 cm spacing.

Is the polypropylene textile removable after installation?
No, the textile is permanently bonded to the panel and is not intended for removal once the system is installed.

Can the 2 cm overlap be trimmed for tighter spaces?
Trimming is not recommended, as the overlap ensures proper alignment and minimises thermal bridging between panels.

What is the minimum recommended subfloor condition for installation?
The subfloor must be level and free of debris to ensure proper panel contact and prevent uneven heat distribution.