Over time this excess moisture can lead to the unseen decay in roof timbers and fixings.
Rubber roof condensation problems.
Flat and low slope roof designs to avoid moisture condensation problems flat roofs call up a whole new breed of building moisture problems how to avoid moisture traps under flat roofs avoid mold rot caused by moisture trapped under un vented flat roofs questions answers about the cause cure prevention of moisture problems in flat roofs and similarly hard to ventilate structures.
But with proper design and maintenance principles you don t have to sweat roof condensation issues.
As it cools it can t hold as much moisture.
Despite the many benefits of using the old roofing styles which involve the incorporation of selectively porous and completely permeable membranes they are the major causes of condensation in roofs.
Picture a cloud of moisture floating overhead between the rafters.
If your roof deck or insulation is developing water droplets chances are your forehead is too.
Warm wet air rises and meets the cold roof and cools.
That excess moisture ends up as drops of condensation on the roof.
The lower the pitch of a metal shed roof and also the deeper the corrugations the worse the problem of metal roof sweating.
Essentially condensation occurs at night when the temperature inside a building is warmer than outside.
It is the leading cause of the deterioration of trusses.
Although moisture problems in the roof assembly can be due to waterproofing deficiencies don t neglect the effect of condensation.