Pole Barn Metal Roof Condensation

I used fiberglass backed with vinyl laid under the metal roofing.

Pole barn metal roof condensation.

In my case i planned to use osb on the sides and roof asphalt shingles up top. Post frame building condensation will be particularly common in winter time in regions where temperatures reach dramatic lows and also in spring and early summer when ground temperatures are still cool but humidity increases. 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. Since lower temperature air cannot hold as much moisture as warmer air the excess humidity turns into water droplets.

Traditionally condensation is managed by insulating the metal roof so that the panel temperature never reaches the dew point. Two common types of metal roof insulation are. I m looking at a pole barn with steel trusses made of 2 2. Picture a cloud of moisture floating overhead between the rafters.

Can house wrap be used on the roof to help stop condensation. That excess moisture ends up as drops of condensation on the roof. The reason why condensation forms on the metal roof is that it s temperature is below the dewpoint of the internal air. Dear pole barn guru.

What is pole barn condensation. 1 it would be an absolute pain to install. Insulation you use needs to be closely bonded to the metal. It does sound like your problem is not from condensation but from a roof leak or leaks.

Condensation occurs when excessive atmospheric water vapor comes into contact with a cold surface. Our agricultural metal roof and wall panels are sustainable. Osb with 30 felt or equivalent between purlins and roof steel would be an effective condensation control. 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.

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. They re made from recycled materials and are 100 recyclable and the end of the building s life. The radiant reflective barrier does keep warmer moist air from contacting the underside of the colder roof steel and condensing. By adding insulation to the internal surface of the metal then the dewpoint is less likely to be met.

Water vapor condenses when warm moisture laden air contacts a cooler surface e g the underside of your roof steel. Warm wet air rises and meets the cold roof and cools. Mike the pole barn guru responds. As it cools it can t hold as much moisture.

Essentially condensation occurs at night when the temperature inside a building is warmer than outside.