Profix Panels & Castellated Panels

4 products

Profix Panels & Castellated Underfloor Heating Panels

Shop Profix panels, Profix PLUS panels, castellated underfloor heating panels, pipe retention panels and low-profile UFH panels at ThermRite Shop. These panels are designed to hold water underfloor heating pipe securely in position before screed, levelling compound or floor finishes are installed.

This collection includes 15mm Profix panels for 12mm pipe, 20mm Profix PLUS panels for 16mm pipe, 20mm plastic castellated panels for 16mm pipe and 15mm self-adhesive castellated panels for 12mm pipe. They are suitable for retrofit projects, renovations, new builds, screeded floors and low-profile water underfloor heating installations where fast pipe retention and accurate pipe spacing are important.

Which Profix or Castellated Panel Should I Choose?

Use the table below to compare the Profix and castellated panel options available in this collection.

Product Best For Key Features Shop
Profix Panel – 15mm Low Profile UFH Panel Low-profile retrofit and renovation projects using 12mm underfloor heating pipe. 15mm pipe retention panel for 12mm pipe at 150mm centres, designed for high output and minimal floor build-up. View Profix 15mm
Profix™ PLUS 20mm Overlay UFH Panel Low-profile overlay systems using 16mm pipe or larger-pipe water UFH layouts. 20mm panel for 16mm pipe, with built-in pipe retention and flexible pipe spacing options. View Profix PLUS
20mm Plastic Castellated Floor Panel Screeded underfloor heating systems using 16mm pipe. Castellated pipe retention panel that holds 16mm pipe securely before screeding. View 20mm castellated panel
15mm Castellated Floor Panel for 12mm Pipe Low-profile screeded UFH systems using 12mm pipe. Self-adhesive castellated panel with screed holes for secure 12mm pipe retention and stable floor build-up. View 15mm castellated panel

Key Benefits of Profix & Castellated Panels

Secure Pipe Retention Built-in pipe retention clips or castellations hold underfloor heating pipe firmly in place without separate pipe clips or rails.
Low-Profile Floor Build-Up 15mm and 20mm panel options are ideal for renovation, retrofit and height-restricted water underfloor heating projects.
Fast Installation Panels help speed up pipe laying by holding pipe in place and reducing the need for additional fixing accessories.
Accurate Pipe Spacing Castellated and Profix panel designs help maintain consistent pipe spacing for even heat distribution across the floor.
Screed & Levelling Compound Compatibility These panels are designed for systems where pipe is encapsulated with screed or levelling compound to create a stable heated floor.
Trade & Domestic Use Suitable for professional installers, contractors and homeowners fitting water underfloor heating systems.

Profix Panels vs Castellated Panels Explained

Profix panels are low-profile pipe retention systems designed to maximise heat transfer by allowing screed or levelling compound to encapsulate the underfloor heating pipe. Castellated panels use raised pipe-retention studs to hold pipe in place before screeding, helping installers create accurate and consistent pipe layouts quickly.

Panel Type What It Does Best For
Profix 15mm Panel Retains 12mm UFH pipe at 150mm centres in a very low-profile board. Low build-up retrofit systems and high-output 12mm pipe layouts.
Profix PLUS 20mm Panel Retains 16mm pipe and supports flexible pipe spacing for different heat outputs. 16mm pipe overlay systems, new builds and larger retrofit projects.
Castellated Panels Use raised castellations to grip and guide pipe before screeding. Screeded UFH installations where fast pipe laying and accurate spacing are required.

Best Uses for Profix & Castellated UFH Panels

Retrofit Underfloor Heating Low-profile 15mm and 20mm panel options help add water underfloor heating where floor height is limited.
Screeded Floor Systems Castellated panels and Profix systems are suitable for installations where pipe will be encapsulated in screed or levelling compound.
New Builds & Extensions Use pipe retention panels to speed up pipe laying and maintain consistent pipe spacing across larger floor areas.
High Output UFH Systems Profix panels are useful where strong heat transfer is needed from a compact water underfloor heating floor build-up.

Frequently Asked Questions

What are Profix panels? Profix panels are low-profile pipe retention panels for water underfloor heating. They hold pipe securely while allowing screed or levelling compound to encapsulate the pipe for strong heat transfer.
What are castellated panels used for? Castellated panels are used to hold underfloor heating pipe in position before screeding. The raised studs grip the pipe and help keep spacing consistent across the floor area.
Should I choose 15mm or 20mm panels? Choose 15mm panels for 12mm pipe and very low-profile installations. Choose 20mm panels for 16mm pipe or where a larger pipe system is required.
Do these panels need pipe clips? No, Profix and castellated panels are designed to retain pipe without separate pipe clips, helping speed up installation and keep the pipe layout consistent.
Can these panels be used for retrofit UFH? Yes, the low-profile 15mm and 20mm options are suitable for many retrofit and renovation projects where floor height build-up needs to be kept low.