20m² ThermRite PRO Low Profile Overlay Underfloor Heating Kit

The 20m² ThermRite PRO Overlay Panel Underfloor Heating Kit is a complete low-profile water underfloor heating system designed for retrofit, renovation and new build projects where a fast, high-output overlay UFH solution is required.

Designed for total room heating in well-insulated areas, this pack includes the key UFH components required to install a practical wet underfloor heating system using 20mm ThermRite PRO dual purpose overlay panels, 16mm underfloor heating pipe, connector cores, manifold components and a Grundfos UPM3 pump pack with temperature control unit.

Key FeaturesCovers Up To 20m²Designed for low-profile overlay UFH installations using ThermRite PRO panels at 150mm pipe centres.Complete Overlay UFH KitIncludes the essential components needed for a typical water underfloor heating overlay installation.20mm ThermRite PRO PanelsLow-profile EPS400 routed insulation panels with 200 micron aluminium foil for efficient heat spread.Dual Purpose Floor Finish CompatibilitySuitable for tile, vinyl, wood and laminate floor finishes when installed to the correct method.No Pipe Clips RequiredPrecision-cut routed grooves securely hold the 16mm UFH pipe in place without separate pipe clips.Grundfos UPM3 Pump Pack IncludedSupplied with pump and temperature control unit for reliable system circulation and mixing.

What’s Included?ComponentQuantity / DetailsThermRite PRO 20mm Dual Purpose Panels28 panels, covering up to 20m²Underfloor Heating Pipe16mm multilayer UFH pipe supplied to suit the 20m² kit areaPipe Layout GuideInstallation layout guidance for the overlay panel systemPipe Reaming ToolDeburring and chamfering tool includedConnector Cores4 pcsManifold & Control Components2 port setupPump PackGrundfos UPM3 UFH pump pack and temperature control unit

Product SpecificationsSpecificationDetailsProduct TypeComplete low-profile overlay water underfloor heating kitCoverageUp to 20m²Panel TypeThermRite PRO dual purpose routed insulation panelPanel Thickness20mmPanel ConstructionEPS400 rigid insulation with 200 micron aluminium foil layerPanel Size1200mm x 600mm, 0.72m² per panelPipe Size16mm multilayer underfloor heating pipePipe Spacing150mm centresHeating Output TypeHigh-output total room heating for well-insulated areasFloor TypeOverlay floor systemsSuitable Floor FinishesTile, vinyl, wood and laminate when installed to the appropriate methodManifold Size2 portPump PackGrundfos UPM3 pump pack with temperature control unitSuitable ProjectsRetrofit, renovations, extensions, new builds and low-profile floor build-upsSKU20PROOverlay20 Kit

Ideal For

• 20m² water underfloor heating overlay installations
• Low-profile retrofit UFH projects
• Tile, vinyl, wood and laminate floor finishes
• Renovations, extensions and refurbishment heating projects
• Well-insulated rooms requiring total room heating
• Projects where the final floor finish may not yet be decided
• Installers, plumbers, heating engineers and competent DIY users

Why Choose This 20m² ThermRite PRO Overlay UFH Kit?

This 20m² ThermRite PRO overlay underfloor heating kit provides a convenient all-in-one solution for installing water UFH over an existing suitable subfloor. The low-profile 20mm panels are manufactured from EPS400 rigid insulation and feature a 200 micron aluminium foil layer to help distribute heat efficiently across the floor area.

The routed panel design securely holds 16mm UFH pipe at 150mm centres, removing the need for separate pipe clips and helping speed up installation. As a dual purpose panel system, ThermRite PRO can be used with tile, vinyl, wood or laminate floor finishes when installed using the correct method for the chosen covering.

Installation note: Final coverage and performance depend on room heat loss, insulation levels, floor build-up, flow temperature and chosen floor finish. For carpet or bonded finishes, panels should be bonded to a suitable sound substrate and covered with the appropriate levelling layer. For floating wood or laminate floors, the finished floor should be installed perpendicular to the pipe direction.

Quick Summary

A complete 20m² ThermRite PRO low-profile overlay water underfloor heating kit using 20mm EPS400 dual purpose foiled panels, 16mm UFH pipe at 150mm centres, pipe layout guidance, pipe reaming tool, 4 connector cores, 2 port manifold components and a Grundfos UPM3 pump pack with temperature control unit.