Roof failures and leaks can be some of the most damaging of all the defect types, and one of the most alarming. Sometimes roof leaks will appear as stains on the interior drywall surfaces and ceilings, or they may be hidden within the structure itself. After any major rain or snow, check for staining that may form on the ceiling drywall surfaces or adjoining wall surfaces. Although there may be many sources for the water intrusion, some of the most common types are: inadequate grout and sealants applied to the roof ridge, inadequate flashing and counter-flashing that fails to provide an adequate seal against the headwalls, and improper eave construction which allows for water to pond at the roof edge.

Causes of Roof Defects

  • Improper design and poor workmanship
  • Ponding water
  • Inadequate flashings
  • Poor workmanship at penetrations


  • There is ponding water on my low-slope or flat roof, but we don’t have any leaks. Is it really a problem?

    Yes, ponding water on any roof is bad news for the building. Especially in Colorado, ponding water will cause damage to roofing materials and allows water into the system, even if not visible to the naked eye.

  • What’s the appropriate wind rating for my roof in Colorado?

    That really depends on where in Colorado your property is located. In certain areas of The Front Range and in the mountains, the IRC cites “special wind region” as the local classification. These areas require that a builder and/or architect visit the local building department to get wind rating requirements. Most shingles are rated for wind speeds of 80mph. If your property is in a Special Wind Region, you may need hurricane rated shingles. An uninformed roofer who installs improperly rated shingles on your property could be voiding your warranty.