No Nonsense Roof & Gutter Sealant Black 310ml (67521) (478) compare Permanent Waterproof Product Quantity £3.29Inc Vat Click & CollectDelivery Protect A1 Roofing Underlay 15m x 1m (31617) (191) compare Weight: 145g/m² Non-Permeable ‘3rd Generation’ Underlay Suitable for all Pitched ...
30 years for a flat roof covering is probably getting close to its usable lifespan. you could spray it with a weed killer such as roundup. Once it dies off you can sweep it off or it will probably come off on its own. Probably worth a plastic leaf guard in the gutter outlet to cat...