Northline Roofing & Building Ltd provides roof repairs, re-roofs and flat roofing across Gwynedd, including Bangor, Caernarfon and surrounding North Wales communities. We work on traditional slate roofs, tiled roofs, chimneys, leadwork, rooflines and modern EPDM or GRP flat-roof systems. Exposed rural and coastal properties need careful assessment, so we trace the source of leaks and provide a clear written quotation for the work required.