Once upon a time, mobile home roofing was a vastly different animal from roofs on traditional stick built housing, but that is no longer the case. Today’s modular and manufactured housing units offer the same level of protection from the elements and use the same sort of built up asphalt shingle construction techniques.
Unlike those old days when mobile home roofing was synonymous with a loose tin covering that rattled like crazy when the wind blew and required frequent efforts at resealing the seams, it is now possible to sleep in peace beneath a sturdy structure. The supporting frame of the roof is now constructed of the same type of 2×4 roof joists overlaid with plywood or chip board.
These elements of course are there for the purpose of carrying the weight of the roof and do not represent security from the weather in their own right. In fact, letting moisture get into these panels and support beams will lead to speedy deterioration and eventual invasion of the home’s living spaces.
To prevent this, a layer of roofing felt is laid on top of the roof decking. This layer consists of a wide roll of organic felt that has been saturated with an asphalt solution to render it moisture proof. While it is this layer that the roof depends upon to keep water out of the house, roofing felt is nevertheless vulnerable to weather effects such as wind and sunlight that can degrade its performance over time.
Protecting this layer of felt underlayment is the purpose of the actual asphalt shingles that comprise the portion of the roof that is actually visible to an observer. Rain, snow, hail, wind, and sunshine are all enemies of roof survival and asphalt shingles are designed to foil these menaces for many years to come.
Yet another danger to roof longevity lies underneath, however. Inside the attic, humidity and temperature changes can build up to produce condensation on the interior surface of the roof plywood. Even if a roof is perfectly tight on top, it can still be rotted away from the bottom side. To combat this hidden threat, it is necessary to provide a roof with a proper amount of venting.
Since a roof vent is, in effect, a hole in the roof, it needs to be very carefully designed to prevent the ingress of weather that a roof is by nature designed to keep out. Whereas older designs were not particularly effective at this, modern roofing vents do a much better job of keeping an attic free of moisture without compromising the integrity of the roof itself.
So long as mobile home roofing is done with the same sort of high quality products found on regular houses, it can provide many decades of protection. Give us a call for help with your mobile home roofing products.