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| Ventilation short circuit
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The disruption of air flow in an intake-exhaust ventilation system. For instance, if vents such as turbine vents or gable vents are placed in between the intake vents and exhaust vents (such as soffit and ridge vents) then the draw created by the Stack Effect will be disrupted and the ventilation system will be much less effective. |
| Ventilation standard
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A specification for the minimum rate of input of outdoor air into indoor spaces. |
| Ventilator
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A device that circulates fresh air and expels stale air. |
| Venting
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(1) The process of installing roof vents in a roof assembly to relieve vapor pressure. (2) The process of water in the insulation course of the roof assembly evaporating and exiting via the roof vents. |
| Venting materials
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Materials used for venting, i.e. PVC, CPVC, ABS, metal. |
| Venture capital
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Financing source for new businesses or turnaround ventures with high risk/high reward possible. Venture capital can be anything from seed money to full financing and sources include wealthy individuals, limited partnerships and business investment companies. |
| Venturi
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A short tube with a tapered constriction in the middle that causes an increase in the velocity of flow of a fluid and a corresponding decrease in fluid pressure and that is used for creating a suction in a vacuum pump. |
| Venue
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Geographic location of a court action and should occur in the place where jurisdiction applies. Change of Venue, which is the move to another locality, occurs in a criminal action when a fair trial is precluded. |
| Verge
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The edge of tiles, slates or shingles, projecting over the gable of a roof. |
| Verge of popcorn texture
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A rough surface texture of Sprayed Polyurethane Foam generally considered unsuitable to receive a base coating. Nodules on this surface are larger than the valleys and an additional 50% or more of coating material is necessary to properly cover and protect the surface. |
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