Great thermal retention

In-slab hydronic underfloor heating

Warm water through pipe cast into the concrete slab. The slab stores the heat as thermal mass and releases it back into the room through the day.

In-slab hydronic underfloor heating

In-slab hydronic underfloor heating is an efficient way to heat your home or commercial space by running warm water through pipes installed within the concrete slab. The slab stores the heat as thermal mass and gradually releases it back into the room, providing comfortable, even heating throughout the day.

One of the main benefits of in-slab heating is its ability to build up and store heat. Once the slab is warmed it can continue radiating heat for hours, making it well suited to homes that require heating throughout the day.

A wide range of floor finishes can be installed over slab heating. Polished concrete is a popular choice, combining the modern look of exposed concrete with the comfort of underfloor heating. The result is a warm, comfortable floor that stores heat and continues to radiate it throughout the day.

Installation

Hydronic heating pipe is securely fixed to the reinforcing mesh or steel before the concrete slab is poured. The pipework is connected to one or more hydronic manifolds, which are then linked to the system's heat source, such as a gas boiler or hydronic heat pump.

We recommend installing extruded polystyrene (XPS) insulation beneath the slab and along exposed slab edges to reduce heat loss and improve the overall efficiency of the heating system.

To maintain the strength and integrity of the finished slab, a minimum of 30 mm concrete cover is required above the heating pipe. This generally allows for approximately 50 mm between the top reinforcing mesh and the finished slab surface.

Things to consider

  • Pipe is covered by a minimum 30 mm of slab
  • Great thermal retention
  • Slow responsive heat

Installation photos

Other hydronic systems

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