The success of underfloor heating is not just in the pipes, but in the material surrounding them. At dexdari, we specialize in the technical interface between the heating element and the floor finish. Our Harold’s Cross studio meticulously plans the “Thermal Mass” of every project to ensure maximum heat emission and energy efficiency.

Insulation and Reflective Barriers

To prevent downward heat loss, we utilize high-density PIR (Polyisocyanurate) insulation boards with a minimum compressive strength of 140kPa. We install reflective foil membranes and perimeter expansion strips to ensure that 100% of the generated thermal energy is directed upwards into the living space. This technical layering is essential for meeting the $U$-value requirements of the Irish sustainable energy authority (SEAI).

Screed Dynamics and Conductivity

We advise on and manage the application of specialized liquid screeds (Anhydrite or Cementitious) that offer superior thermal conductivity compared to traditional sand-and-cement mixes. The liquid screed fully encapsulates the pipe, eliminating air pockets that act as insulators. This ensures a more rapid heat transfer and a more uniform surface temperature, preventing “hot spots” on the final floor finish.

Moisture Content and Floor Finishing

Before any final flooring (timber, tile, or LVT) is installed, dexdari performs a technical moisture test of the substrate. We ensure the screed has reached the correct CM (Calcium Carbide) percentage to prevent warping of floor finishes. We provide a structured “ramp-up” heating protocol to gradually introduce heat to the floor, allowing the materials to settle without thermal shock.