The science behind Gypsol’s thermal efficiency
Underfloor heating has grown rapidly in popularity as homeowners, developers, and contractors look for efficient ways to heat buildings. Unlike radiators, which create localised hot spots, underfloor heating gently warms the floor so that heat rises evenly throughout a space. However, the effectiveness of these systems relies heavily on the type of screed used to cover the heating pipes. This is where Gypsol flowing screeds deliver a clear advantage. Their unique formulation and physical properties give them superior thermal performance, allowing heating systems to run more efficiently, saving both energy and cost.
Thermal efficiency is critical to how well underfloor heating performs. If the screed material has low conductivity, much of the heat becomes trapped around the pipes. This leads to slow warm-up times, uneven room temperatures, and wasted energy. A screed with high conductivity, on the other hand, moves heat quickly and evenly through the floor, meaning the system requires less input to achieve the desired comfort levels. The result is consistent room temperatures, lower running costs, and a heating system that performs to its potential.
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The science behind Gypsol’s performance
The thermal efficiency of Gypsol is rooted in its formulation. Unlike sand and cement screeds, Gypsol screeds use a calcium sulphate binder with carefully graded aggregates and water. This creates a dense and uniform structure with naturally higher conductivity. Tests show Gypsol typically achieves values around 2.5 W/mK, compared to 1.0–1.4 W/mK for traditional screeds. In practice, this means that more of the energy generated by underfloor pipes reaches the floor surface with less loss along the way.
Another factor is the way Gypsol is applied. Its free-flowing, self-compacting nature allows it to fully encapsulate underfloor heating pipes. This eliminates air pockets that can act as insulators and ensures maximum surface contact. The screed transmits heat more effectively and, crucially, does so consistently across the floor area. Unlike some traditional screeds that can leave gaps or inconsistencies if not installed carefully, Gypsol ensures even heat distribution without cold patches or uneven performance.
Thickness also contributes to its efficiency. Gypsol screeds can be applied at depths as little as 35 to 40 millimetres above the pipes, compared with 65 millimetres or more for sand and cement screeds. Less material above the pipes means less resistance for the heat to travel through, leading to quicker response times and more efficient operation. This thin yet durable layer is a key part of why Gypsol screeds help heating systems work at their best.
Capital cost savings with Gypsol
Another important benefit is the potential for cost savings in underfloor heating installations. Because Gypsol screeds offer excellent thermal performance, underfloor heating pipework can often be spaced further apart without compromising efficiency. A change in spacing of 50mm can save around 1 metre of pipe per m², equating to cost reductions of approximately £2.00 per m². Fewer pipes also mean fewer loops are needed on a manifold, which can reduce control costs by as much as £100 per port. For larger projects, these savings can add up significantly while still delivering high-performance heating.
Benefits for contractors, owners, and energy use
The scientific advantages of Gypsol translate into real-world benefits for both installers and building users. For contractors, Gypsol is quick and easy to place, with large areas often poured in a single day. Its self-compacting properties reduce the need for manual finishing, and the smooth, level surface it leaves is well suited to a wide range of floor coverings. Faster installation times mean tighter project schedules can be met without compromising quality.
For building owners and occupants, Gypsol’s thermal efficiency offers both comfort and cost savings. Rooms heat evenly, without the cold spots that can sometimes frustrate users of underperforming systems. The system also requires less energy to maintain comfortable conditions, helping to reduce fuel bills. At a time when energy costs and carbon emissions are under increasing scrutiny, Gypsol provides an attractive solution that supports both household budgets and sustainability goals.
Gypsol screeds also complement modern heating technologies such as air source and ground source heat pumps. These systems operate at lower water temperatures and require screeds that can transfer heat efficiently to perform well. Because Gypsol allows underfloor heating to work effectively at lower input levels, it strengthens the performance of heat pump systems and supports the delivery of highly energy-efficient buildings. This is becoming especially important as building regulations and sustainability standards demand greater reductions in energy use and carbon output.
Future-proof with modern heating technologies
Gypsol screeds also complement modern heating technologies such as air source and ground source heat pumps. These systems operate at lower water temperatures and require screeds that can transfer heat efficiently to perform well. Because Gypsol allows underfloor heating to work effectively at lower input levels, it strengthens the performance of heat pump systems and supports the delivery of highly energy-efficient buildings.
This is especially important with the introduction of the Future Homes Standard 2025, which requires new homes to meet stricter low-carbon performance standards. By enabling efficient heating at lower temperatures, Gypsol screeds help ensure projects are future-proof and compliant with upcoming legislation.
Long-term performance and diverse applications
Another strength of Gypsol is its durability. Its low shrinkage characteristics mean it is less prone to cracking than traditional screeds, helping to maintain conductivity levels throughout its lifespan. The consistent, dense structure resists degradation even under repeated heating and cooling cycles, which means the thermal efficiency achieved on day one is maintained for decades to come. Developers and property owners benefit from reliability and reduced risk of costly repairs or system inefficiencies over time.
The applications for Gypsol extend across multiple sectors. In residential housing, it provides efficient heating solutions for both new builds and retrofits. In commercial projects such as offices or retail units, it helps deliver comfortable, evenly heated environments that align with energy efficiency standards. Public sector buildings, including schools and healthcare facilities, also benefit from its ability to reduce energy demand while maintaining high levels of occupant comfort. In every setting, Gypsol plays a role in ensuring underfloor heating delivers on its promise of efficient, comfortable, and sustainable warmth.
At LKAB Minerals, we supply a full range of Gypsol flowing screeds tailored to the needs of modern construction. Whether the priority is speed of installation, enhanced durability, or maximising thermal efficiency, our technical team works closely with contractors, architects, and developers to ensure the best possible results. With extensive experience in the construction sector, we offer not only a proven product but also the expertise needed to support projects from design through to completion.
For any project that relies on underfloor heating, Gypsol offers a scientifically proven way to achieve greater efficiency. Its high conductivity, reduced thickness, and consistent performance make it the clear choice for systems that demand comfort, cost savings, and long-term reliability. Contact our team today to learn more about how Gypsol can transform your project, or visit our product pages for detailed technical information. You can also follow us on LinkedIn for the latest updates, case studies, and product releases!
