XPS 500 Underfloor Heating Overlay Boards – Super High Output 120mm
£11.56 (inc.VAT)
The NEW XPS 500 underfloor heating overlay boards offer a simple solution to install underfloor heating onto existing floors. These panels can be placed directly onto any solid surface and are perfect for retrofit installations. These boards feature performance benefits over the standard EPS Overlay Boards.
- Light bulb returns
- Foil is fitted into main grooves
- 200 micron foil
- 120 mm pipe centres
- Used with all floor coverings
**PLEASE NOTE: THIS PRODUCT HAS A MINIMUM ORDER QUANTITY OF 10 BOARDS**
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The XPS 500 overlay boards offer a simple solution to install underfloor heating into your home without lifting your floor. The panels can be placed directly onto an existing solid surface and are perfect for retrofit installations. The 20 mm thick boards are low profile and hold 16mm pipe in channels.
These underfloor heating overlay boards have all the features of our standard EPS boards and more. XPS overlay boards have improved durability crafted from high-quality XPS 500. Boards are designed to accommodate 16 mm pipe, with three channels for return pipes. Lightbulb-shaped 180° returns streamline installation while minimising the risk of pipe damage.
UFH overlay boards are topped with 200-micron thick aluminium foil, facilitating swift heat-up times of as low as 30 minutes. Aluminium provides excellent heat distribution, ensuring that heat spreads evenly across the area of the board and the entire floor. The aluminium continues within the pipe channels to improve efficiency. The panels are secured with adhesive and can used with all floor coverings. Most floor coverings can be placed directly on top of our panels, find out more on our datasheet.
These boards are fitted with 120 mm pipe centres and hold 26% more pipe compared to the 150mm EPS Board. This results in a higher heat output which is always desirable.
Key Features:
- High strength ensures durability and reliability
- Increased heat output for enhanced comfort
- Innovative lightbulb-shaped returns for easy installation
- Versatile compatibility with floor coverings
- Superior heat distribution for maximum efficiency
The installation of low-profile underfloor heating overlay boards is a straightforward process. This involves cutting the boards with a saw and fixing them using glue. Attention to detail during installation is crucial to ensure proper fitting of the system. For comprehensive guidance for low-profile underfloor heating refer to our data sheet below.
DataSheet
Specification
- Crafted from high-quality XPS 500 (expanded polystyrene)
- High compressive strength of 500KPA
- 1200 mm x 600 mm x 20 mm
- Lightweight and easy to handle
- Accommodates 16 mm pipes at 120 mm or 150 mm spacing
- Three channels for return pipes
- Enhanced with a 200-micron thick foil for optimal heat distribution
Installation
The installation of low-profile underfloor heating overlay boards is a straightforward process. This involves cutting the boards with a saw and fixing them using glue. Attention to detail during installation is crucial to ensure proper fitting of the system. For comprehensive guidance for our Installation guide.
Floor Preparation
- Boards are fixed to any solid surface; the subfloor must be dry, level and clear of dust & debris.
- A floor levelling compound may be required if the floor surface is uneven.
Board Layout
- Transitional boards are used in areas of high pipe density.
- Boards are installed lengthwise following the direction of the pipes.
- It can be useful to lay all of the panels on a dry floor to find any potential issues with the layout before fixing the panels
- Begin laying overlay panels in the corner of the room, ensuring tight edges against the walls during placement.
Cutting
- Boards can be cut easily to allow for seamless installation around obstacles.
- Use a craft knife or insulation saw to cut boards.
- Transitional areas, additional corners, 90° bends and extra pipe channels can be cut from full boards.
- A router can be used to cut new channels within the boards.
Fixing to floor
- A contact adhesive will provide a secure bond to the subfloor. Ensure the adhesive is free from all chlorinated solvents as this would damage the board.
- Spray adhesive is recommended as it provides quick and strong bonding of boards to concrete and wood. Available in 500ml spray cans and 22ltr canisters for use with a spray gun.
- Porous surfaces may require an additional coat to be applied to the underside of the overlay boards.
Laying Pipe
- Ensure all boards are fully secure and all pipe channels are free of any debris.
- Refer to the layout drawing continuously when laying pipe runs.
- Carefully walk along the pipe pushing the pipe down into the straight pipe channel with the sole of your foot.
XPS or EPS
The differences between XPS and EPS underfloor heating overlay boards
Thermal Resistance
XPS underfloor heating overlay boards provide nearly double the thermal resistance of EPS. With thermal resistance values of 0.9 m² K/W for XPS compared to 0.477 m² K/W for EPS, XPS stands as the superior choice for reducing downward heat loss. This higher thermal resistance is especially crucial for retrofit projects where lifting existing floors for insulation installation isn’t feasible. Choosing XPS ensures excellent performance without significant disruptions to existing structures.
Compressive Strength
XPS boards possess a higher cell density, resulting in superior compressive strength compared to EPS boards. While 400kPa for EPS is generally sufficient, the heightened strength of XPS supports a wide range of flooring types and maintains effectiveness under typical loads and foot traffic. This durability ensures longevity, establishing XPS as a superior choice over other foam insulation types with lower compressive strength.
Moisture Resistance
XPS boards, with their higher cell density, provide superior moisture resistance compared to EPS overlay boards. This makes XPS an ideal material for use at floor level where moisture exposure is a concern. In contrast, EPS may allow water penetration, resulting in gradual degradation of the insulation’s overall performance over time.
Board Design
XPS underfloor heating boards have more design features that elevate performance and simplify installation.
- foil coating extending within the pipe channels ensures enhanced coverage and improved performance.
- Lightbulb-shaped returns streamline installation, enhancing efficiency while minimising the risk of pipe damage.
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