Winter Did a Number on Your Roof. Here's What to Look For — and How to Fix It. Another Delaware winter in the books — and if your shingle roof and gutters came through without damage, you're luckier than most. The freeze-thaw cycles, ice dams, and heavy snow loads this season put serious stress on roofing materials. The damage is often invisible from the ground, and it compounds year over year until you're facing a $20,000+ replacement bill. At Invigorate Pressure Washing, we