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Online Catalogue | Underfloor Heating Products By Floor Type |  OVERLAY | Underfloor Heating That fits Over Existing floors

OVERLAY | Underfloor Heating That fits Over Existing floors

Overlay Underfloor Heating Products
Overlay Underfloor Heating Products
Overlay underfloor heating can be installed over existing flooring. Suitable for heavyweight flooring such as Tile*, Hard wood, carpet* or vinyl.

Overlsy boards are strong enough to have tiles applies directly to them and solid wood flooring can also be directly fixed or screwed to the panel.

(*with a cover layer of plywood)

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Overlay Lite Underfloor Heating Products
Overlay Lite Underfloor Heating Products
Overlay Lite underfloor heating can be installed over existing flooring and is suitable for lightweight floor coverings such as Engineered wood, Laminate, or Carpet*

(*with a cover layer of plywood)

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Overlay Lite 15 Underfloor Heating Products
Overlay Lite 15 Underfloor Heating Products Overlay Lite 15 comprises a 22mm Floor Panel (PB08030) similar to the Overlay Lite system, with the difference being that the new thicker depth of 22mm means the panel can accept a 15mm pipe enabling longer pipe circuits on an underfloor heating project.

These panels can also be used on a Suspended floor by recessing them in to the floor void.

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Overlay Underfloor Heating Diagram

Overlay Underfloor Heating Diagram
OverlayTM is a unique low profile floor heating system ideal for both renovation and new build projects.

Overlay Lite Underfloor Heating Diagram

Overlay Lite Underfloor Heating Diagram

Overlay Underfloor Heating Description

Installed over the existing floor and only 18mm in depth, Overlay™ allows underfloor heating to be installed where traditional underfloor systems would either require expensive excavation or would require the floor to be raised to an unacceptable level.

The Overlay™ system is available in 2 panel types to allow for installation to all build types and floor coverings. Overlay™ panel is a fibrous panel used for heavyweight floor coverings such as ceramics, or where the floor covering needs to be secured directly to the panel, e.g. solid wood.
Overlay™ Lite is a high compressive strength, lightweight insulated panel used for lightweight floor coverings, e.g. laminate, engineered wood and carpet. Due to its ease of handling and cutting it is also more suitable for larger areas and multiple room installations.

Overlay™ systems use a 12mm pipe at 150mm pipe centres and provide excellent response times and heat output compared with traditional built in underfloor heating solutions and are therefore ideal for both traditional heating systems and low temperature renewable systems

Overlay Underfloor Heating: Key Information

Key design and installation information
Maximum heat outputApprox.100W/m2
Recommended design flow temp45°C to 50°C
Maximum circuit length80m
Maximum coverage per circuit12m2
Material requirements (approx)
OverlayTM floor panelCoverage 0.48m2
OverlayTM Lite floor panelCoverage 0.75m2
Pipe7m length/m2
End returns1 return bend per floor panel
12mm x 80mm coil of pipe1 coil per circuit
15mm x 12mm adaptors and stiffeners1 pack per circuit





Project typeOverlayTMOverlayTM Lite
Single room / small areasYesYes
Multiple room / large areaWith careful planningYes
Floor coveringOverlayTMOverlayTM Lite
Tiles / slate /other ceramicsDirectWith plywood overboard
Natural WoodDirect and fixedNo
Laminate and engineered laminateYesYes
Carpet and VinylWith plywood overboardWith plywood overboard

Overlay Underfloor Heating: Heat Output Table

Mean water temperature °CPipe spacing mmOutput w/m2Surface floor temperature °C
4015061.025.8
4515068.026.3
5015079.028.1
55150101.030.1
60150124.032.0

Overlay Underfloor Heating: Video

Overlay Underfloor Heating: PDF Download

overlay-and-overlaylite-installation-guide.pdf

PDF Download

overlay-and-overlaylite-installation-guide.pdf

2079 KB

Taken from the above Technical Installation Manual, this PDF covers just the Overlay and Overlay Lite Underfloor Heating systems

Online Catalogue | Underfloor Heating Products By Floor Type |  OVERLAY | Underfloor Heating That fits Over Existing floors