System insulation boards are essential components in underfloor heating and cooling systems, particularly in residential and commercial buildings where thermal efficiency and even heat distribution are critical. These boards are typically installed beneath the heating pipes to provide thermal insulation and support the pipe layout. The IVAR TB20P05 model is designed for use in dry environments where a non-hydrophobic insulation solution is required. It is commonly used in conjunction with PEX or ALPEX pipe systems, ensuring even heat transfer and structural support for the piping network.

When installing underfloor heating systems, the correct spacing between heating elements is crucial for achieving uniform heat distribution and avoiding cold spots. The TB20P05 model supports multiple spacing options, allowing installers to adapt the system to the specific heating load and room dimensions. The board’s dimensions and spacing options make it suitable for a variety of applications, including residential living areas, commercial offices and industrial spaces where underfloor heating is integrated into the building design.

Technical parameters

Code	TB20P05
Brand	IVAR

The TB20P05 is manufactured with a fixed spacing of 75, 150, 225 or 300 mm between the grooves, accommodating pipe diameters of 16, 17 and 18 mm. The board dimensions are 1200 x 600 mm, providing a surface area of 0.72 m² per sheet. These parameters are essential for determining the number of boards required for a given room and ensuring compatibility with the selected pipe system. The absence of a hydrophobic layer means it is suitable for dry environments only and should not be used in areas exposed to moisture or .

Installation and connection

The installation process involves laying the insulation boards in the desired room, ensuring that the grooves align with the planned pipe layout. The boards are typically placed directly on the subfloor, with care taken to avoid overlapping or gaps between sheets. Once the boards are in place, the heating pipes are inserted into the grooves and secured using clips or fasteners. It is important to verify that the pipe diameter matches the groove size and that the spacing between the pipes corresponds to the board’s design. Common installation errors include incorrect board orientation, improper pipe alignment and failure to account for joints in larger installations.

Compatibility and accessories

The TB20P05 is specifically designed for use with ALPEX or PEX pipe systems. It is not compatible with systems requiring hydrophobic insulation or those installed in wet environments. Additional components such as pipe clips, fasteners and thermal coupling elements may be required to complete the installation. Installers should ensure that all components are sourced from a compatible range to maintain system integrity and performance.

Technical background for designers

The IVAR TB20P05 insulation board is manufactured from a rigid, closed-cell foam material that provides and structural support for the heating pipes. The grooves are precision-moulded to accommodate the specified pipe diameters, ensuring a secure fit and even heat distribution. The absence of a protective film means the board is suitable for dry environments only. The board’s thermal properties and spacing options allow for efficient heat transfer and system flexibility, making it suitable for a wide range of underfloor heating applications. The board’s performance is influenced by the quality of the subfloor preparation and the accuracy of the pipe layout.

Service and operation

The TB20P05 system insulation board requires minimal maintenance once installed. It is important to ensure that the subfloor remains dry and free from debris that could interfere with heat transfer. No specific service intervals are required for this component, as it is a passive element in the . Regular system checks should include verifying the integrity of the pipe connections and the absence of air pockets or blockages in the piping network.

Frequently asked questions

Can the TB20P05 be used with PEX-A pipes?
Yes, the board is suitable for PEX or ALPEX pipes with an external diameter of 16, 17 or 18 mm.

Is a protective film required for the TB20P05?
No, the board does not include a hydrophobic film and is intended for dry environments only.

Can the board be cut to size on site?
Yes, the board can be cut to accommodate irregular room dimensions or obstacles during installation.

What is the recommended spacing for the TB20P05?
The board is available in spacing options of 75, 150, 225 and 300 mm, depending on the heating load and room size.