Rooftop HVAC units are a leading cause of commercial roof leaks. We diagnose and repair HVAC-related leaks fast.
Rooftop HVAC units create multiple penetration points on your commercial roof. Each penetration is a potential leak source—and HVAC units have many of them. Plus, they produce condensate water that must be properly drained.
Unlike static roof penetrations, HVAC units vibrate and move during operation, which can loosen seals and flashing over time. This makes HVAC-related leaks one of the most common—and most frustrating—problems for building owners.
Understanding where HVAC leaks originate helps with faster diagnosis and repair
HVAC units produce gallons of condensate water daily. If the drain line clog, leak, or disconnect, water backs up and overflows into the building. This is one of the most common HVAC leak causes.
The rubber gaskets that seal the HVAC unit to the curb or roof deck degrade from UV exposure, heat, and age. Once cracked or hardened, water easily penetrates during rain.
HVAC units have complex flashing requirements—curb flashing, pipe flashing, ductwork penetration flashing. Any of these can fail, allowing water under the membrane.
Operating HVAC units vibrate constantly. Over time, this loosens mounting bolts, separates seals, and can even damage the curb or roof deck. Vibration damping components wear out.
We inspect the HVAC unit, all penetration points, flashing, and the surrounding roof area. We check the condensate system while the unit is running to observe any active leaks.
We test the condensate drain line, pump (if present), and connections to ensure proper drainage. Clogged or disconnected lines are a frequent culprit.
We repair or replace damaged flashing, reseal gaskets, and address any membrane damage around the HVAC unit. We use appropriate materials for your roof type.
For issues requiring HVAC-specific repairs (like refrigerant leaks or condensate pump replacement), we coordinate with your HVAC contractor to ensure a complete fix.
Our experts will find the source of your HVAC-related roof leak and provide lasting repairs. Don't let water damage worsen—contact us today.