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| May 2009 The Restoration Pillar Newsletter |
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Understanding the Role of
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A building envelope is a term used to define the components of a building that separate the interior environment of a house from the exterior environment. People often think of the building envelope as being the walls and roof of a structure. Although a building envelope can include these components, the building envelope is not necessarily defined by these components. For example, the interior wall between a house and an attached garage is typically insulated and is considered to be a component of the building envelope. The exterior walls of the attached garage in this example are not considered part of the building envelope because they do not separate the interior environment from the exterior environment.
A roof is considered part of the building envelope when there is no attic, such as a roof over a cathedral ceiling where the drywall is attached to the underside of the rafters. When there is an attic between the roof and an insulated ceiling, the insulated ceiling separates the interior environment from the exterior environment and is considered a component of the building envelope. Typical components of the building envelope include a building wrap, exterior sheathing, insulation, and a vapor barrier...
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Even though valuable photographs and family heirlooms have been damaged by flood waters, they can sometimes be saved if certain procedures are followed, say emergency managers and restoration experts.
Photographs may be the only record of special occasions such as weddings, birthdays and graduations. Damaged photographs for which there are no negatives available should receive attention first. Once photographs have stuck together or become moldy, saving them may not be possible.
Washing photos: Handle all wet photos carefully as the surfaces may be fragile. Wet photos may be washed and rinsed in clean water (if necessary), but be careful not to touch the surfaces. Handle only the edges. Dry them face up in a single layer on a clean surface, such as a table, window screen or clean plastic.