Torch-on felt is the cheapest type of flat roof covering, with EDPM usually working out at around 25% more expensive. At the top of the price scale lie green roofs and sheet metal, such as zinc. Along ...
Vertical rooftop solar panels outperform conventional ... panels can be the same or up to 30% higher than for conventional flat roof solar installations,” company founder and CEO Trygve Mongstad ...
Regulator proposes sending state’s flat-rate feed-in tariff for rooftop solar to a new low barely above zero, says consumers must now focus on using their PV to avoid paying retail power ...