Wet Underfloor Heating
Wet Underfloor Heating: The Trade-Proven Choice for Modern UK Homes
Wet underfloor heating—also called hydronic UFH—is fast becoming the heating method of choice for tradespeople across the UK. By pumping warm water through a network of pipes beneath the floor, this system transforms the entire floor surface into a gentle, energy-efficient heat source. If you’re specifying or installing heating systems, mastering wet UFH gives you a serious edge on-site.
How Wet Underfloor Heating Works
The system starts with a heat source—commonly a gas or oil boiler, or increasingly a renewable energy option like an air source or ground source heat pump. That heat source warms the water to between 35°C and 65°C—far lower than radiator systems. Water flows from the source to a manifold, the system’s control centre. From there, it’s distributed through durable PEX or Pert pipe loops embedded beneath the floor.
As the water circulates, it transfers heat into the floor structure, which then radiates warmth evenly across the room. No cold spots. No draughts. Just consistent, zoned comfort throughout the property.
Essential Components of a Wet UFH System
- Manifolds: Direct flow to each zone. Look for models with flow meters, isolators, and auto air vents.
- Pipes: Usually 16mm multilayer plastic, these flexible pipes are laid in loops to cover floor areas evenly.
- Pumps & Mixers: A dedicated UFH pump circulates water. Mixing valves or blending units maintain safe flow temps.
- Thermostats & Controls: Room sensors manage each zone independently. Many systems now support smart scheduling and remote access.
- Insulation: High-quality insulation beneath the pipes ensures heat goes up, not down—essential for efficiency.
Installation Methods for UK Projects
- Screeded Floors: Most common for new builds. Pipes are laid over insulation and covered in a 65–75mm screed.
- Low-Profile Panels: Ideal for retrofits or height-restricted jobs. Routes are pre-cut for easy pipe fitting.
- Joisted Floor Systems: For suspended timber floors. Pipes are clipped between or below joists using plates or panels.
Ready to Install?
When installed correctly, wet underfloor heating offers unmatched comfort, lower running costs, and long-term performance. It’s silent, efficient, and completely hidden—giving homeowners more flexibility with room layouts and flooring choices.
Explore our full range of wet underfloor heating kits, complete manifolds, and control options to get your project off to a flying start. Whether you’re a first-fix plumber or a seasoned UFH pro, we’ve got your install covered.