Heat Without the Height
How cutting the heating into the floor you already have is changing retrofit design
Every architect who has worked on a refurbishment knows the conversation. The scheme calls for warm, radiator-free spaces. The existing floor is sound, the thresholds are fixed, the skirtings are original and the doors have already been hung. Then the heating specification arrives and with it a demand for extra floor height that the building simply does not have. For three decades, JK Floorheating has been solving that problem from the other direction. Instead of building up, it cuts in. The floor you have is the floor you keep JK’s patented method uses a purpose- built industrial floor grinder fitted with a diamond cutting disc. Precise channels are cut into the top layer of an existing screed or concrete slab, virtually dust-free and the heating pipe is laid directly into them. The finished floor sits exactly where it did before.
There is no uplift, no raised level and
no knock-on work. Doors stay as they are. Skirtings stay as they are. Stair risers, thresholds and level changes remain as designed, or as they were built a century ago. The process works on 99% of floor
surfaces, which turns a long list of retrofit compromises into a short list of decisions. It is equally at home in a Victorian conversion, a 1970s school, a care home, a showroom or a new-build where dry construction has been specified. Carrying the system seamlessly, through into new extended areas allowing the continuity of one underfloor heating system throughout the property. Designed around your drawings, not a catalogue Because every channel is cut on site, every layout is bespoke. Tube spacing is designed to the room, not the other way around and where a space demands more
output, JK increases tube density rather than raising water temperature. That matters most for low-carbon
schemes. JK’s water-based system runs at low flow temperatures and is fully compatible with standard gas boilers as well as air and ground source heat pumps. Specify it today with a boiler and the same floor is ready for a heat pump tomorrow. For clients who are planning phased decarbonisation, that is a rare piece of future-proofing that does not cost anything extra in floor height or fabric. The system also suits suspended timber floors and dry-construction builds, including those using gypsum fibre and similar panel systems, so multi-level projects with mixed floor types can be heated by a single, consistent solution. Part L, SAP and the carbon in your slab There is a persistent assumption that a retrofit heating system needs an insulated slab and that an uninsulated slab means
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