Part L Building Regulations

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Changes to Part L Building Regulations

In June 2022, the UK government revised Part L Building Regulations, outlining that all new-build homes must produce 31% fewer CO2 emissions than was previously acceptable, while commercial buildings must produce 27% fewer.

This update was an interim step in preparation for the Future Homes Standard which outlined that all new-build homes and commercial buildings will have to be fitted with low carbon, low temperature and energy efficient heating by 2025.

Due to its lower operating temperature and greater energy efficiency, underfloor heating is perfectly suited to meet the requirements.

Why underfloor heating?

Under new regulations, the maximum flow temperature of heating systems must now be 55˚C in order to reduce carbon emissions. Underfloor heating typically runs at around 35˚C – 45˚C.

Also, underfloor heating can use 15-40% less energy than a conventional boiler and radiator system whilst still producing a consistent, effective heat, making it very energy efficient.

Plus, it can be used with both air-source and ground-source heat pumps which are known for their low temperature and energy efficiency.

How can Gaia help?

Here at Gaia, we understand that these changes can seem daunting. But, with over three decades of experience in underfloor heating, we’re in the perfect position to help the industry adapt.

We specialise in the design, supply and installation of both wet and electric underfloor heating systems, providing our clients with greater choice for complying with the new regulations.

Plus, our dedicated account managers and technical team have years of expertise, knowledge and the skills required to help architects, contractors, M&E consultants, builders and developers with their projects.

For technical advice or guidance on the correct system for your Part L compliant project, we’re on hand to help.

Approved Documents

Part L

L1(b), L2

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Underfloor Heating Systems

Wet Underfloor Heating

We supply wet (hydronic) underfloor heating systems from top brands for a wide range of projects.


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We provide a range of electric (dry) underfloor heating systems, including self-adhesive mats, heating cables and decoupling membrane to warm any room.

Electric Systems

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