What are those black streaks on your roof? Dirt? Mildew? Burnout marks from Santa Clause? It actually is algae, gloeocapsa magma to be exact- otherwise known as blue-green algae. So why is it black? This alga actually has a darkly pigmented outer layer that protects it from UV rays, causing those dark streaks on your roof. These little bacteria build up over time as they feed on moisture and calcium carbonate.

Found in almost every room of the home, windows are one of the biggest factors in your home's comfort levels and energy costs. Most homeowners know that leaving a window slightly open can lead to a spike in the energy bill, but did you know that over time your windowpanes can become deteriorated and less energy efficient – even if you've never opened them! Knowing what to look for in your windows can not only keep your home looking better but can also keep your utility costs down.