Metal Roof Condensation In Attic

That excess moisture ends up as drops of condensation on the roof.

Metal roof condensation in attic.

Oftentimes people will insulate their metal roof with 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. Attics are much like an oven. Water found in these places is commonly caused by condensation in the attic. If you are heating or cooling a building adding insulation would certainly be a good idea.

This heat also affects the building materials used to construct the ceiling. 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. Good installation and ventilation means no condensation when installed on standard residential construction consisting of typical attic insulation proper and well functioning ventilation and roof decking metal roofs do not pose a condensation risk. As it cools it can t hold as much moisture.

This video shows what a significant condensation problem can look like. Sunlight heats the roof which raises the temperature of stagnant air in the attic. Picture a cloud of moisture floating overhead between the rafters. Warm wet air rises and meets the cold roof and cools.

How to stop condensation on a metal roof step 1. Essentially condensation occurs at night when the temperature inside a building is warmer than outside. Finding water damage on the wall or ceiling is worrying for any homeowner. Inspect the house by looking for vents that flow into the attic such as bathroom and kitchen exhaust fans.

Check for short circuits that may be causing moisture such as ceiling fans unsealed light fixtures and vent. Line the attic. Most people assume this is caused by a leaking roof but that might not be the source.