Metal Roof Over Shingles Condensation

Things to know about metal over shingle roof problems.

Metal roof over shingles condensation.

Put the steel down directly on a vapor barrier. 3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof. That excess moisture ends up as drops of condensation on the roof. Quite quickly the metal becomes cold enough so that it reaches what is known as the dew point.

Drip stop applied to the underside of your. It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same. Doesn t provide the flattest surface for the metal roofing to be installed over each course of shingles is about a 1 8 higher than the course just below it. The cold metal in contact with the warm air means that water droplets condensation forms on the inside surface of the shed roof.

As it cools it can t hold as much moisture. The condensation occurs most commonly on the roof as the warmest most moisture laden air rises to roof level. After all you ll be making a significant and long term investment. Those drips from ceilings and surface moisture occur when warm air comes in contact with the cooler roofline or walls.

When looking for the best way to solve condensation drip inside a building with metal roofing look no further. Essentially condensation occurs at night when the temperature inside a building is warmer than outside. In the cooler times of the year when metal is cold the warmer moisture in the building moves into the attic hits the metal roof and condenses on the underside. When temperature and humidity conditions reach dew point moisture can condense on the underside of metal roofing and potentially cause water damage to the inside of your customer s building.

If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. Warm wet air rises and meets the cold roof and cools. Both metal and shingle roofs are great options for your next roofing project.