05/10/2026
💡FAQ: I'm building a Passive House - is baseTherm® suitable?
Yes, baseTherm® is designed for high-performance floors, providing seamless, void-free insulation that helps minimise heat loss and thermal bridging, making it an ideal floor insulation solution for Passive House and energy-efficient builds.
Here are a few reasons why:
Excellent thermal performance:
Passive House construction places a strong emphasis on minimising heat loss and achieving high levels of thermal efficiency. baseTherm® supports these requirements by providing excellent thermal insulation performance, with U-values of 0.15 W/m²K or better achievable depending on the floor construction, perimeter-to-area ratio, insulation grade and depth. The baseTherm® Low Lambda grade offers a declared thermal conductivity of just 0.041 W/mK, helping to deliver a highly energy-efficient floor construction.
Seamless, void-free insulation:
baseTherm® flows around irregularities, services and pipes, rather than relying on multiple rigid boards being cut and fitted together. This helps minimise gaps and potential thermal-bridging points.
Helps reduce thermal bridging:
Reducing thermal bridging is an important part of high-performance building design. baseTherm®’s ability to form a continuous poured insulation layer and fill voids can help address areas where rigid insulation boards can be difficult to accurately fit.
For more information, see the NSAI Agrément certification.
Particularly suitable for UFH:
Passive House homes commonly use very efficient, low-temperature heating systems. baseTherm® is specifically compatible with underfloor heating, encapsulating services and providing a level substrate for the UFH and screed.
Suitable for new-build floors:
The NSAI Agrément certification covers baseTherm® as a thermally insulating, non-structural BEPS system for new and existing buildings, including ground-supported and suspended floor applications.
Environmental Product Declaration
baseTherm® has a product-specific Environmental Product Declaration (EPD) covering production, transport/installation, and end-of-life stages. That’s useful when assessing the environmental performance of a high-performance building rather than looking at thermal performance alone.
Passive House certification requires the entire building to meet stringent performance criteria. Thus, baseTherm® supports this approach by providing a continuous, high-performance floor insulation layer designed to help minimise heat loss and potential thermal bridging.
To read more on this: https://basetherm.com/faq/
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Contact our 💚 team:
📞087 333 0683
📞087 223 2456
📲[email protected]
Smet Building Products Ltd Fast Floor Screed Ltd Bremat Holland BV
