IKO Shed Felt Sand Finish Roofing Cap Sheet / Underlay 2m / 3m x 1 m 3mm thick | eBay
Black Polyester Shed Roofing Felt 16.4 x 3.2ft (5m x 1m) with 13mm Galvanized Roofing Nails Pack of 50 Included | Heavy Duty Premium 25 Year Life Expectancy Roof Felt : Amazon.co.uk:
Roofing felt | Roofing supplies | B&Q
Rushock 5.0m x 4.0m Log Cabin Double Glazed 34kg Polyester Felt, Plus Underlay - Forest Garden