08/08/2026
Not every roofing problem starts with rain.
In many commercial buildings, moisture damage begins inside the building and works its way into the roof system.
Warm, humid air can rise through gaps around:
• Roof penetrations
• Mechanical curbs
• Interior walls
• Ceiling openings
• Poorly sealed transitions
Once that moisture reaches a cooler part of the roofing assembly, condensation can form beneath the surface.
Because the damage is hidden, it may go unnoticed until you see:
⚠️ Rust on metal decking or fasteners
⚠️ Damp or compressed insulation
⚠️ Musty odors inside the building
⚠️ Stained ceiling tiles
⚠️ Blisters or soft areas on the roof
⚠️ Higher heating and cooling costs
The important thing to remember is this:
Replacing the visible roofing material may not solve the problem if the source of the moisture is still inside the building.
A proper evaluation should look at the entire roofing system, including insulation, ventilation, air leakage, drainage, and interior humidity.
At J & M Roofing LLC, we help commercial property owners identify the source of roofing problems—not just the symptoms.
Concerned about hidden moisture in your roof system?
Call or send us a message to schedule a commercial roof inspection.
Jonathan Miller
J & M Roofing LLC
330-575-4784
Experienced. Trusted. Reliable.