Our recent roof project of a flat roof installed in Rathgar in Dublin 6 with a Lava 20 roof system D. Hennessy Roofing is a trusted roofing contractor serving South Dublin, with years of experience repairing, maintaining, and installing roofs throughout the area. Whether you need a flat roof repair, a full re-roof, or an emergency call-out, our local roofing experts know South Dublin homes and weather conditions.