Aren’t glass tubes delicate?
A1) Kingspan solar evacuated tubes are actually very tough. Besides meeting the US SRCC standard, the European Solar Keymark and SPF standards, they also meet the optional hail impact test standards. This means the collector is certified to take winds of up to 72 mph, 1 inch hail at 50 mph and a snow load of over 1000 lbs and not fail!