Pole Barn Metal Roof Condensation

Every year when the temperatures change rapidly and the moisture is high i get condensation that fills up the roof insulation along the intersection of the roof and the top girt.

Pole barn metal roof condensation.

Traditionally condensation is managed by insulating the metal roof so that the panel temperature never reaches the dew point. Picture a cloud of moisture floating overhead between the rafters. Can house wrap be used on the roof to help stop condensation. I m looking at a pole barn with steel trusses made of 2 2.

Insulation you use needs to be closely bonded to the metal. Choose from a variety of styles profiles and colors for your metal barn siding pole barn siding metal shed roofing and more. I can think of a few reasons not to. Dear pole barn guru.

The radiant reflective barrier does keep warmer moist air from contacting the underside of the colder roof steel and condensing. This is often accomplished using vinyl backed fiberglass insulation to prevent humid air from coming into contact with the cooler metal roof which may be at or below the dew point. That excess moisture ends up as drops of condensation on the roof. Think very wide rolls of lightweight material in the wind.

They re made from recycled materials and are 100 recyclable and the end of the building s life. I used fiberglass backed with vinyl laid under the metal roofing. As it cools it can t hold as much moisture. Since lower temperature air cannot hold as much moisture as warmer air the excess humidity turns into water droplets.

The reason why condensation forms on the metal roof is that it s temperature is below the dewpoint of the internal air. Condensation occurs when excessive atmospheric water vapor comes into contact with a cold surface. Essentially condensation occurs at night when the temperature inside a building is warmer than outside. 1 it would be an absolute pain to install.

If it has been below freezing inside your building and fairly humid water vapor will freeze to the underside of the barrier as well as the roof framing members. In my case i planned to use osb on the sides and roof asphalt shingles up top. Two common types of metal roof insulation are. Our agricultural metal roof and wall panels are sustainable.

It does sound like your problem is not from condensation but from a roof leak or leaks. Water vapor condenses when warm moisture laden air contacts a cooler surface e g the underside of your roof steel. By adding insulation to the internal surface of the metal then the dewpoint is less likely to be met. Warm wet air rises and meets the cold roof and cools.

Mike the pole barn guru responds.