Slab Hydronic Floor Heating

APPLICATIONS

• Hydronic in-slab heating is suitable for large areas (80 m2 +) where the slab is used as heat storage [Thermal mass]. In-slab heating has a slow response time and can take between 1-2 days to heat up, depending on slab thickness and insulation.

• Pipe Type: Cross-linked polyethylene pipe with oxygen barrier
• Pipe Diameter: 16mm
• Slab Thickness: Minimum 30mm coverage above the pipe
• Warranty: 25 years

• PIPE TECHNOLOGY
• REHAU PEX pipe is specifically used for underfloor heating. It is a cross-linked polyethylene pipe with an oxygen barrier to prevent corrosion.
• HEAT OUTPUT
• With in-slab hydronic heating, we aim for a heat output of 100-120 W/m². A combination of flow and temperature is balanced to suit the heat load requirement of each room.
• SPECIAL REQUIREMENTS
• The hydronic floor heating pipe can be installed across expansion joints with the correct installation method. The minimum concrete coverage over the pipe is 30mm – this means a distance of 50mm from the top of the top mesh to the finished surface of the slab. Less will mean different more costly installation options. The minimum coverage is to ensure the structural integrity of the finished slab. Comfort Heat must be informed of any expansion joints in the slab.
•  about your in-slab heating options. We’ll be happy to provide all the technical support, guidance, and practical help you need.
• Please note: In-slab hydronic heating installation requires a range of site-specific metrics. To provide you with technical advice and an accurate quote, we will need floor measurements, specifications, and information regarding slab construction.

The hydronic floor heating pipe is installed before the slab is poured. The pipe is attached to either the mesh or the reinforcing rods with 200mm centres (one direction only). With slabs poured directly onto the earth, it is advised to insulate under the slab to avoid heat loss into the ground. All pipework connects back to a central manifold and onto the nominated heat source.