Sheep's wool used for insulation by National Trust

Several National Trust buildings are set to receive the sheep's wool insulation

It is hoped installing sheep's wool insulation in National Trust properties will cut heating bills by a third.

A 17th Century granite cottage at Sous les Bois in Trinity is the first building to have the insulation fitted.

It is part of the Green House project aimed at making the National Trust for Jersey more environmentally friendly.

Charles Alluto, the trust's chief executive, said: "The house is saving about a tonne of carbon dioxide a year."

Sous les Bois, which is currently covered in scaffolding, is the first of several National Trust buildings which are to receive sheep's wool insulation.

The insulation is 15cm thick and is made of 50% wool and 50% recycled polyester.

Mr Alluto said you did not need masks or gloves to handle it.

He said: "We hope by the National Trust doing this, we hope that it will act as an example and other people will follow suit."