Roofing Felt. We stock a range of roofing felt in different qualities including Shed Felt 20kg 10m x 1m roll, Green Mineral Felt 38kg 10m x 1m roll, Underlay Felt (Sand Finish) 36kg 20m x 1m roll, Torch On Underfelt (sand finish) 16m x 1 m roll and Torch On (Green Mineral & Charcoal) 8m x 1m roll - please note Torch On Felt requires a heat gun for application.