Condensation is the culprit for this rusting metal panel, in spite the owner's excellent maintenance of the roof panels against leaks and rust. The owner also took steps to control condensation inside the building. His efforts helped, but the condition moved faster than one could imagine. The above hole developed under three years!
1. Inside vapor barrier had broken down over the years, allowing interior moist air to collect on the underside of the roofing panels.
2. The panels began rusting around the fastener hole edges, allowing leaks to start.
3. The insulation of the vapor barrier collected water...condensation worsen and the rusting process accelerated
Because the owner had approved high quality roof coatings and primer, his problem could be resolved by addressing the culprit hole edges. The result is a five year warranty against leakage with no interior vapor barrier costs.........
.........And no expensive roof replacement costs.
A slightly different condensation problem
Each roof is different. Playing detective is important.
 |
 |
In this case the vapor barrier inside is intact. The panels are rust resistant....the fasteners are not because of their installation characteristics. Again, this situation can be controlled.
Are you looking for a cool roof contractor?
If you are seeking an experienced company to offer an estimate to preserve your existing metal roof and/or transform the surface to a cool roof, one of us would be delighted to visit, discuss the alternatives available. For a contractor, click here for a map of our geographical work area.
Beyond information about our contracting services, this site is designed for individuals interested in cool roofs. These web pages are prepared by the same contractor that specializes in the application of these cool roofs. She enjoys dabbling in website construction, therefore photos and articles are simply presented. All pictures are from Roof Menders projects, the same contractor. If you have questions, just call 610-941-1051 for a chat.