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Keeping moisture |
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Major reroofing projects typically consist of either replacement or retrofit Replacement The practice of removing an existing roof system down to the roof deck and replacing it with a new roofing system. Re-cover or Retrofit The addition of a new roof membrane or steep-slope roof covering over a major portion of an existing roof assembly. This process does not involve removal of the existing roofing. |
| There are several primary roofing types | ||
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| Low-slope roofs: a category of roofs that generally include weatherproof membrane types of roof systems installed on slopes at or less than 3:12 (14 degrees). | Steep-slope roofs: a category of roofing that generally include water-shedding types of roof coverings installed on slopes exceeding 3:12 (14 degrees). | Green roofs: a green roof is a roof that is partially or completely covered with vegetation and soil, or a growing medium, planted over a waterproofing membrane. |
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