Can you retrofit underfloor heating?

Under what circumstances might you retrofit underfloor heating? Why does it save energy? How does underfloor heating work? What should you be aware of when fitting it? What is wet underfloor heating and what are the relative pros and cons of this and other systems?

In this video SuperHomer Ozzie ffield uses his bungalow energy retrofit as an example to explain how a wet underfloor heating system works and is fitted and why it can be an attractive retrofit measure.

Advantages of retrofit underfloor heating

Underfloor heating frees up floor space by doing away with the need for radiators on the wall. It also offers the advantage of added comfort underfoot and works at a lower temperature than conventional central heating, thus tending to cost less to run.

Disadvantages of retrofit underfloor heating

Underfloor heating is not as responsive as other heating systems as it takes time for the floor slab to heat up. This means a secondary heat source may be required, especially if your life style means that you are in and out of the house at unpredictable times and you expect instant heat whenever you return home.

Ozzie’s home has undergone extensive eco renovation and includes underfloor heating. It is one of the homes in the SuperHomes network of older homes that have been renovated by their owners to reduce carbon emissions by at least 60%. Most SuperHomes host public open days in September. For more, visit Ozzie’s home.

Also see:
Underfloor heating at free eco open house events in September
How to insulate a concrete floor