Condensation Attic Felt

Traces where water has trickled down the walls.

Condensation attic felt.

Finding water damage on the wall or ceiling is worrying for any homeowner. There are basically 3 types of roof leaks which are detailed below. There are dozens of things that can cause condensation buildups in the attic one of which is a leaking roof. Moisture forming on the glass window panes or other flat surfaces.

Warm wet air rises and meets the cold roof and cools. Because this type of underlayment creates a waterproof barrier attics should be. Noticeable musky damp odor. Common causes of condensation in the attic.

Most people assume this is caused by a leaking roof but that might not be the source. Condensation will arise as a result of warm moist air penetrating up through the ceiling. Essentially condensation occurs at night when the temperature inside a building is warmer than outside. Condensation in lofts occurs when humid air makes its way through insulation or other gaps into the loft space and hits a cooler surface leading to beads of moisture on timbers lintels and on the underside of the roof.

Roofing felt is impermeable to water so it will not allow moisture to escape from the roof. If you notice excessive moisture during extreme temperature changes and not when it rains then the moisture probably isn t a roof leak. Despite its benefits older style roofing felt can contribute to an unwanted side effect condensation in the roof which can lead to the rotting of timbers and damp appearing on ceilings. That excess moisture ends up as drops of condensation on the roof.

Water found in these places is commonly caused by condensation in the attic. It s impervious to moisture and when installed correctly offers a higher degree of weather protection than felt. As it cools it can t hold as much moisture. Signs of condensation in the attic may include the following.

Fixing this issue can be less costly than replacing a roof but it should be addressed as soon as possible.