1 FM quick reads on Roofing systems
1. Three Places to check for Leaks
Roof leaks are a major headache to fix. The good news is that some leaks are predictable — especially as the roof ages. By identifying areas that are prone to developing problems, steps can be taken that will prevent roof problems cost effectively.
Look For Roof Leaks Near Penetrations
Flashings and sealants at penetrations through the roof membrane are common trouble spots. Typically in single-ply roofing systems, penetration flashings are the same material as the roof membrane and are bonded to the field membrane. Inspect the laps, seams and sealants at these locations regularly.
Roof Leaks On The Perimeter
Leaks occur near roof edges because of the transition from flexible membrane flashings to inflexible sheet-metal flashings. Technicians should ensure that sheet-metal laps shed water, and they should inspect the sealants at these locations regularly.
Condensation And Roof Leaks
Sometimes, a roof might appear to leak in January when the temperature dips below freezing, but the roof might not be leaking. What happens is condensation is created when the warm, moist interior air inside the building contacts cold surfaces or when cold air leaks through the building's exterior skin.