Description
Castellated Egg Crate Panel – Low Profile – for 12mm Underfloor Heating Pipe
The Castellated Egg Crate Panel Low Profile is designed for quick and secure installation of 16mm water-based underfloor heating pipes.
With a slim 16.5mm profile, this innovative pipe fixing panel is ideal for retrofit projects, renovations and new-build installations where minimising floor height is important.
The castellated egg crate design holds 16mm UFH pipes securely in place, allowing flexible pipe layouts and consistent spacing for efficient heat distribution.
Manufactured from 100% recycled plastic, the panels feature a self-adhesive backing, interlocking connectors and integrated cutting grooves for quick and straightforward installation.
Key Features & Benefits
- Designed for 12mm UFH Pipes – Securely holds 12mm diameter underfloor heating pipework.
- Ultra-Low Profile – 16.5mm – Ideal for renovations and installations where floor height is limited.
- Self-Adhesive Backing – Allows quick and convenient fixing to suitable subfloors.
- Interlocking Panel Design – Snap-clip connections help create a continuous installation surface.
- Flexible Pipe Spacing – Accommodates 50mm, 100mm and 150–300mm pipe centres.
- 100% Recycled Plastic – Durable injection-moulded construction.
- Easy to Cut and Fit – Integrated cutting grooves at 50mm intervals allow panels to be trimmed to suit room layouts.
- Suitable for Various Floor Types – Can be incorporated into systems finished with tiles, wood, LVT, linoleum or carpet, subject to the correct floor build-up.
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Low Profile Castellated Egg Crate Panel |
| Model | SpiderFix SP12 |
| Panel Size | 1200 x 600mm |
| Panel Thickness | 16.6mm |
| Pipe Compatibility | 12mm UFH Pipe |
| Pipe Spacing | 50mm, 100mm, 150–300mm |
| Material | 100% Recycled Plastic |
| Fixing Method | Self-Adhesive Backing |
| Coverage | 0.72m² per Panel |
Suitable Applications
Ideal for low-profile underfloor heating installations in residential properties, including renovations, retrofit projects and new builds.
Suitable for installation over compatible concrete, suspended timber subfloors and insulation boards.
Once the pipes are installed, a suitable flexible fibre-reinforced self-levelling compound is recommended to create a stable surface ready for the chosen floor finish.
Ideal for Low Profile Underfloor Heating Systems
The 12mm pipe Castellated Underfloor Heating Panel is an excellent choice for retrofit and renovation projects where minimising floor height is important.
Its low-profile construction allows 12mm heating pipes to be installed securely without the need for a traditional deep screed system.
Suitable applications include:
- Home renovations and extensions
- New-build underfloor heating installations
- Kitchens, bathrooms and living areas
- Concrete and suspended timber subfloors
- Installations over suitable insulation boards
Installation Guidance
The SpiderFix SP12 panels are designed for straightforward installation.
- Prepare the Subfloor – Ensure the surface is suitable for the self-adhesive panels.
- Position the Panels – Lay the panels and connect them using the integrated snap-clips.
- Install the 12mm Pipework – Press the pipes securely into the castellated channels following the heating layout.
- Apply Levelling Compound – Use a suitable flexible, fibre-reinforced self-levelling compound according to the system requirements.
- Install the Floor Finish – Complete the installation using a compatible floor covering.
Recommended Overall Floor Build-Up
For domestic applications with normal foot traffic, the manufacturer’s guidance recommends the following overall thicknesses, including levelling compound and floor covering:
| Installation | Recommended Thickness |
|---|---|
| Direct on subfloor – Tiles / Wood | 20–25mm |
| Direct on subfloor – LVT / Linoleum / Carpet | 25–30mm |
| Over insulation boards – All listed finishes | 30–35mm |
Final floor build-up and installation requirements should be checked against the selected levelling compound, substrate and floor covering manufacturer’s instructions.
Why Choose Low Profile Castellated Egg Crate Panels for 12mm pipe?
Whether you’re upgrading an existing heating system or installing underfloor heating in a new property, 12mm Castellated Panels offer a practical, low-profile solution.
Their secure pipe-holding design, flexible spacing options and self-adhesive backing help simplify installation while supporting efficient heat distribution.
Choose our Low Profile Castellated Egg Crate Panels for a fast, secure and professional 12mm underfloor heating installation.





