//Slimline Screed Hydronic Heating
Slimline Screed Hydronic Heating2018-05-25T14:45:17+00:00

Slimline Screed Heating

Less Concrete, Less Floor Build Up

Slimline Screed Heating is ideal for a range of unique applications

  • when a minimal floor level increase is needed
  • where there is an existing slab in a renovation
  • for precast concrete panel floors

Reduced Floor Build Up

Our slimline screed positioning sheets are a mere few millimetres thick. The total additional build up can be as low as 66mm for a polished slab. This is over 25% less than a 90mm build up required for our standard in screed method.

This makes it ideal for installing hydronic floor heating on to an existing slab such as in a renovation or precast concrete panel floors.

What is Slimline Screed Heating

Slimline Screed Board Diagram

Slimline Screed Heating is when the pipes that carry the heated water are laid clipped into our pipe positioning sheets on top of the slab. The pipes and positioning sheets are then covered with a concrete screed.

  • 30mm when there is to be a floor covering
  • 50mm when the slab is to be polished

Our multi-layered specialist pvc pipes are 16mm Uponor Pex Pipe, made in Germany. The pipe is held 200mm apart in a snake like fashion within the pipe positioning sheet.

When in operation the floor heating thermostat will call for hot water from the boiler. A hydronic heating boiler will heat the water and pump it through the pipe at 50°C transferring its heat into the concrete screed, this heat then radiates through the home similar to how a brick wall radiates heat after the sun goes down on a summers day.

How is it Installed?

Our slimline screed sheets are placed on top of the finished slab providing the mechanism for clipping in the slab heating pipe. Like in slab heating all walls and cabinetry need to be marked out prior to installation and the concrete pour should happen the day after installation to prevent any form of damage by weather or people.

Important Numbers:

  • 2mm – Board Thickness
  • 17mm – Positioning Knob Height
  • 16mm – Pipe Thickness
  • 46mm – Additional Height on top of Structural Slab (With Floor Covering)
  • 56mm -Additional Height on top of Structural Slab (Polished Concrete)
  • 32MPa – Minimum Concrete Strength
  • SL82 – Recommended Mesh in Screed

Recommended Floor Coverings

The most suitable floor finishes for in slab heating are polished concrete, engineered board or tiles. This is because they are all great conductors of the heat energy created from the hot water in the hydronic heating system. We do not recommend natural timbers or glued flooring as the heat from the heated slab can effects them.

How long does it take to heat?

It takes around 6 hours for in screed hydronic heating to warm your home. Because the response time is quite fast when compared to slab heating, you can manage your temperature and energy use more efficiently by lowering temperatures over night, or turning the system off completely if you are going away for a short time. A more affordable floor heating option is in slab heating.

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