Underlay
lso referred to as ‘under felt’ or simply ‘felt’. Description for sheet materials manufactured from bitumen based or plastic materials used under the battens to protect the roof from the ingress of wind, dust and moisture.
lso referred to as ‘under felt’ or simply ‘felt’. Description for sheet materials manufactured from bitumen based or plastic materials used under the battens to protect the roof from the ingress of wind, dust and moisture.