What local conditions affect commercial roofs in the Fox Cities?
The Fox Valley has a long industrial and commercial history, and many buildings here have been roofed several times. Wisconsin winters put weight on a roof, and flat roofs are more sensitive to snow and drainage than sloped ones.
- Snow load and drifting. Snow piles against parapets and rooftop equipment, putting extra weight in certain spots.
- Ponding water. Poor slope or blocked drains let water sit and speed up wear.
- Freeze and thaw. Repeated temperature swings stress seams, flashing and sealants.
- Rooftop equipment. Heating and cooling units create penetrations that need good flashing.
- Hail and wind. Summer storms can puncture membranes or lift edges.
Never send crews onto a snow-loaded roof without checking structural limits. If you are concerned about the weight of snow on a building, contact a structural professional.
