Upper Roof Trusses
Roof crawl spaces are usually insulated, but a frequent problem occurs when blown insulation settles only around the lower end of roof trusses. The cold winter air forces the top of the trusses to contract while the heated bottom ends expand. This can cause groaning noises from your roof and structural damage over time. If your roof experiences these problems, you may want to improve your insulation. If you aren’t sure what your roof insulation looks like, it’s probably worth a look.