VA insurance Mortgage
Insurance available to veterans of the U.S. military from the Veterans Administration. Eligible borrowers must pay a premium of 1 % of the loan amount to get a VA insured loan. The loan is then backed by the government in case of borrower default. See entitlement.

Valley
The internal angle formed by the intersection of two sloping roof planes.

Valuation
An estimation of value of a property, as determined by various factors. See appraisal.

Vapor Barrier
Any material used to prevent the passage of water vapor.

Vapor Migration
The movement of water vapor from a region of high vapor pressure to a region of lower vapor pressure.

Vapor Retarder
A layer of material or a laminate used to appreciably reduce the flow of water vapor into the roofing system.

Vent
Any outlet for air that protrudes through the roof deck, such as a pipe or stack. Any device installed on the roof, gable or soffit for the purpose of ventilating the underside of the roof deck.

Vent Sleeve (Also called a Collar)
Pre-formed flange placed over a vent pipe to seal the roof around the vent pipe opening.

Ventilation
Creates a positive flow of air that allows the house to “breathe” and helps prevent moisture build-up year-round.

Vinyl Sheet Flooring
Resilient flooring, available in roll form, providing an installation with few seams.

Vinyl No-Wax
A surface that protects the color and pattern of the floor, but needs floor polish to maintain a high gloss.

Vinyl Tile 
Resilient flooring available in flat pieces usually measuring 12″ x 12″ which can be installed as individual units.

VOCs (Volatile Organic Compounds)
VOC is an acronym for volatile organic compounds, which are gases that can trigger allergic reactions, asthma and upper respiratory infections. All Armstrong floors have very low VOC levels