Does underfloor heating require screed?

In most wet (water-based) underfloor heating systems, yes — the pipework is usually laid and then covered with screed. The screed acts as a thermal mass, helping distribute heat evenly and retain warmth for longer.

However, low-profile and retrofit systems can sometimes be installed without traditional screed, depending on floor build-up, height restrictions and the project type. We’ll always advise the best solution for your property.

What type of screed is used with underfloor heating?

The most common options are: - Traditional sand and cement screed - Liquid (flowing) screed, such as anhydrite or cement-based liquid screeds

Liquid screed is often preferred for underfloor heating because it: - Wraps tightly around the pipes - Reduces air gaps - Improves heat transfer - Can allow thinner floor build-ups

We’ll specify the most suitable screed based on your system design and flooring choice.