Membrane roof layover in Sevierville TN. After I went and looked at this roof we knew it was a great candidate for a PVC membrane layover. We will be advising the owners to add in about 10 roof vents as when we took some infrared pictures it showed a decent amount of moisture under the membrane. This is achieved by taking infrared pictures of the roof as the sun is setting on a sunny day. To the touch, the membrane should be cold but the moisture under the membrane will still be warm. This is how you can see the moisture under the membrane with an infrared camera.
Areas to add vents due to moisture under membrane
Table of contents
- Adding ventilation to high moisture areas.
- Membrane holding moisture
- More moisture between wall and grease traps
- Moisture from the holes by the grease traps
- More water next to ac unit
- 1Adding ventilation to high moisture areas.
This corner was particularly high in moisture
Go To Pin - 2Membrane holding moisture
This area was a bit lower, and water had gathered there.
Go To Pin - 3More moisture between wall and grease traps
As you can see, this area has a decent amount of puddling water/moisture.
Go To Pin - 4Moisture from the holes by the grease traps
As you can see, anything yellow, orange, or reddish is warm water or moisture under the membrane. If it’s black, blue, or purple, then it’s cold and not wet.
Go To Pin - 5More water next to ac unit
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