Graven Hill is a self build development for those who are looking for a new build home but want to be able to put their own touch on it. If you have decided on the design on your new home then it is time to consider your options for heating, and that's where Graven Hill Self Build can help you. Underfloor heating is a cost effective and environmentally friendly way of heating you home. A common misconception is that underfloor heating can only be used on the ground floor of a home but this is not the case; you can install underfloor heating in any room in your home.