Warm roof designs

4 A Systems Approach to Condensation Control 4.4.7 Warm Roof Designs 

Batt insulation inbetween boards Roofing membrane (air barrier) 

J- Plywood deck Structural rafters Internal lining 

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Figure 4.4 Ridge detail for tiled warm roof design...

In all warm-air design applications, consideration must be given to the effects of stratification in tall buildings. Stratification increases the roof and high-wall fabric losses and the air change rate by the stack effect, and hence the ventilation loss. These effects may increase the heat loss by 25% over that of a radiant heating system. 

The hardest of the links shown in Figure 1.1 to make is the one between microstructure and texture. It requires consideration of the microstructure, the physical properties, the manner in which ice cream is eaten and how the microstructure breaks down as it warms up and is manipulated in the mouth. A further complication is that while the deformations applied to samples in physical property measurements are designed to be simple, the deformation applied in the mouth is complex. For example, when ice cream is squashed between the tongue and the roof of the mouth as it melts, the deformation is a combination of stretching (Figure 6.10a) and simple shear (Figure 6.10b). Thus the sensory experience relates to more than one physical property. 

Thermal Envelope Houses - An architectural design (also known as the double envelope house), sometimes called a "house-within-a-house," that employs a double envelope with a continuous airspace of at least 6 to 12 inches on the north wall, south wall, roof, and floor, achieved by building inner and outer walls, a crawl space or subbasement below the floor, and a shallow attic space below the weather roof. The east and west walls are single, conventional walls. A buffer zone of solar-heated, circulating air warms the inner envelope of the house. The south-facing airspace may double as a sunspace or greenhouse. 

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