Profi-joist | underfloor heating for floor joists | Ideal for retro-fit
Profi-joist uses galvanized pipe clips attached to joist edges. With a fast response time and no need for equal joist spacing’s, Profi-joist is ideal for any joisted floor.
The Profi-joist system combines 450mm long galvanised pipe holding clips, which are attached to joist edges. Random joist spacing’s are easily accommodated with this system, making it ideal for adding underfloor heating into older buildings.
Once installed, either a chipboard floor deck, or solid timer flooring is installed directly to the joists.
The following items are included in this system:
- Underfloor heating manifold – pre-assembled
- galvanised pipe clips – 450mm
- Aluminium sheet to cover the heating area
- Pipe clips
- Thermostats for each room
- System control box
- CAD pipework drawing
- Electrical wiring guide – first fix
- Electrical wiring guide – second fix
- Installation manual
- Telephone and email support
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Installing this system:
Insulation is fitted between joists, leaving a 16mm space down from the joist top. Pipe clips are fitted along the joist, which hold the 16mm Pex-Al-pex pipe.
After pipe installation, the remaining 16mm deep gap between pipes is filled with Rockwool or similar. The floor is then covered with 0.5mm aluminium sheets, prior to either a structural timber finish floor, or chipboard.
Suitable Floor Coverings
- Tile (over 18 or 22mm plywood fitted directly to the joists
- Carpets with 1.5 tog or lower
- Structural timber (18-25mm)
- Laminate
Pipe Centres
This system can be designed with the following average pipe spacing’s.
- 150mm (for 300mm joist spacings)
- 200mm (for 400mm joist spacings)
- 300mm (for 600mm joist spacings)
Compatible Heat Sources
- Heat pumps with 60°C water available – supplied with a pre-assembled heat-pump manifold.
- Boilers with over 60°C supply – supplied with a pre-assembled boiler manifold which has a mixing unit to reduce the water temperature
The following items are included in this system:
- Underfloor heating manifold – pre-assembled
- galvanised pipe clips – 450mm
- Aluminium sheet to cover the heating area
- Pipe clips
- Thermostats for each room
- System control box
- CAD pipework drawing
- Electrical wiring guide – first fix
- Electrical wiring guide – second fix
- Installation manual
- Telephone and email support
Our underfloor heating systems quotation service:
To provide an accurate quotation, first a heatloss calculation must to be carried out. To do this we need you to supply us with the following information:
- Floor plans of the rooms to be heated
- Elevation plans (for ceiling height, door and window areas)
- Planned floor construction and insulation thicknesses
- Type of underfloor heating system required for each area.
- Any details about U-values for doors and windows.
If you dont have this, we can still provide an accurate quotation based on room dimensions and a basic floor plan. In this circumstance the insurance backed design guarantee is not included.