Many homeowners assume that underfloor heating is only suitable for new builds or major renovations, but that’s no longer the case. Thanks to modern low-profile systems, it’s now easier than ever to install underfloor heating in existing homes without significant disruption.
Here’s everything you need to know about retrofitting underfloor heating — and how Fastwarm makes it simple.
What Does Retrofitting Mean?
Retrofitting means adding underfloor heating to an existing property rather than installing it during a new build. The key is choosing a system that doesn’t require deep excavation or changes to your existing floor structure.
Fastwarm’s low-profile water systems and electric heating mats are ideal for this purpose.
Low-Profile and Overlay Systems
Traditional underfloor heating systems often need a screed layer, which can raise the floor height significantly. Fastwarm’s overlay and low-profile systems are designed to be installed directly onto existing subfloors with minimal height build-up — perfect for retrofit projects
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These systems are quick to install, compatible with a wide range of floor coverings, and provide efficient heat output without major renovation work.
Which Floors Are Suitable?
Most existing homes can accommodate underfloor heating, whether you have timber, concrete, or mixed flooring. Electric systems are typically best for single rooms or smaller spaces, while water systems are great for whole-house heating or ground floors.
Our experts can advise on the most suitable system for your home through our free design service.
Electric vs Water Systems for Retrofit
For smaller areas such as bathrooms, kitchens, or extensions, electric underfloor heating provides a straightforward installation.
For larger spaces or if you already have a wet central heating system, a water underfloor heating kit offers excellent long-term running costs and even heat distribution.
Why Choose Fastwarm for Your Retrofit Project?
Fastwarm offers one of the UK’s widest selections of retrofit-friendly systems, all backed by expert technical support. Our low-profile designs, simple installation guides, and fast delivery make upgrading your home heating system more achievable than ever.
Explore our full range of underfloor heating systems today and discover how easy it is to bring modern comfort to your existing home.
