Donna Price / American PressJoe Wait, an employee of Able Plumbing, puts insulation on an exposed pipe in front of Cumulus Broadcasting at 425 Broad St. at 1 p.m. Tuesday. The pipe broke in the freeze and Wait repaired it before insulating it so it won't happen again. This was Wait's third pipe repair job of the day. Having lived in Delaware for 20 years, Wait said he has learned that the key to keeping warm in cold weather is to dress in layers. Counting his jacket, he is wearing five layers of clothing, he said.