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Glossary
Glossary of 7847 Property Development Terms
V
V Joint - Tongue and groove boards with their top corners beveled so when the two boards come together a V is formed.
V Type Ridge Cover - A series of clay shingles used to cover the ridge pole on tile and slate roofs.
Vacant Possession - The previous occupants must vacate the property before you move in, this includes any tenants.
Vaccum Seal - Seal between panes of a double-paned window i.e. insulated glass unit or IGU. Failure of a hermetic seal causes permanent fogging between the panels of the IGU.
Vacum Breaker - In plumbing, a device to prevent backflowback siphonage by means of an opening through which air may be drawn to relieve negative pressure.
Vacum Seal - Seal between panes of a double-paned window i.e. insulated glass unit or IGU. Failure of a hermetic seal causes permanent fogging between the panels of the IGU.
Vacuum Asbestos - A filtered device using air suction to collect wetted down asbestos for easy removal into specially made bags.
Vacuum Breaker - An electrical breaker with a space that contains rced air pressure.
Vacuum Breaker - In plumbing, a device to prevent backflowback siphonage by means of an opening through which air may be drawn to relieve negative pressure.
Vacuum Breaker Atmospheric - A simple mechanical device consisting essentially of a check valve in the supply line and a valve member (on the discharge side of the check valve) opening to the atmosphere when the pressure in the line drops to atmospheric; also called a siphon breaker.
Vacuum Seal - Seal between panes of a double-paned window i.e. insulated glass unit or IGU. Failure of a hermetic seal causes permanent fogging between the panels of the IGU.
VAI (Value Added Improvement) - Work performed on a property that enhances value.
Valley - A low region on a roof between gables.
Valley Flashing - Sheet metal that lays in the V area of a roof valley.
Valley Gutter - Horizontal or sloping gutter at the internal low intersection between two sloping roofs.
Valley Rafter - A rafter that forms the intersection of an internal roof angle.
Valuation - Inspection of a property by a qualified surveyor for the lender to establish its acceptability as security against the mortgage loan.
Valuation Basic - This is carried out for the purposes of mortgage and is prepared for the lender. A survey will also help you to find out independently whether the price is reasonable. Your mortgage lender will almost certainly insist on a basic valuation to make sure that the property is worth the amount you are paying for it. They want to ensure that you will be able to sell it again and therefore that it is a safe investment. Although it is often referred to as a survey, it doesn't go into nearly as much detail as a homebuyer or full survey would do.
Valuation Estimate - The amount a surveyor believes a property to be worth.
Valuation Fee - The fee paid by the prospective borrower for the lender's inspection of the property, normally paid upon loan application.
Valuation Lenders - A valuation of the proposed property carried out by the lender before agreeing to give out a mortgage. This is only a valuation survey, separate and full structural survey is needed by the buyer.
Valuation Report - This is carried out for the purposes of mortgage and is prepared for the lender. A survey will also help you to find out independently whether the price is reasonable. Your mortgage lender will almost certainly insist on a basic valuation to make sure that the property is worth the amount you are paying for it. They want to ensure that you will be able to sell it again and therefore that it is a safe investment. Although it is often referred to as a survey, it doesn't go into nearly as much detail as a homebuyer or full survey would do.
Valuation Sellers - A valuation of the proposed property carried out by the seller to establish a value on the property. This is only a valuation survey, separate and full structural survey is needed by the buyer.
Valuation Survey - A survey carried out by the lender to ensure that the house's value is not less than the proposed loan. Often the lender will arrange the survey and bill the buyer. This cannot be used as a structural survey.
Value Added Improvement (VAI) - Work performed on a property that enhances value.
Value Appreciated - The value that a property has increased compared to what it was previously valued at.
Value Appreciation - The value that a property is expected to increased compared to what it was previously valued at.
Value Assessed - The value of a parcel of real property, usually a fraction of the market value, used for the purpose of determining the amount of property tax.
Value By Assessment - The value of a parcel of real property, usually a fraction of the market value, used for the purpose of determining the amount of property tax.
Value Of Bulking - Of a pigment, its ability to add volume to a paint.
Valuer - A property professional who assesses a value on a property and who has passed examinations and is bound by a professional code of conduct.
Valve - A device to stop, start or regulate the flow of liquid or gas through or from piping.
Valve AEV - Automatic Expansion Valve.
Valve Air - Control valve in air line system.
Valve Air Adjusting - Spray gun valve controlling input air.
Valve Automatic Expansion - Pressure controlled valve which controls high pressure liquid refrigerant to low pressure liquid refrigerant
Valve Backcheck - A device which prevents sewage from flowing backward into a buildings plumbing system.
Valve Balancing - A pipe valve that is used to control the flow of a liquid rather than to shut it off.
Valve Ball - A valve in which a ball regulates the opening by its rise and fall due to fluid pressure, a spring, or its own weight.
Valve Ball Check - Valve assembly which permits flow of fluid in one direction only.
Valve Bleed - Valve with a small opening inside which permits a minimum fluid flow when valve is closed.
Valve Butterfly - A valve constructed with a disc that rotates 90 degrees within the valve body.
Valve Flush - A device located at the bottom of the tank for flushing water closets and similar fixtures.
Valve Flushometer - A device that discharges a predetermined quantity of water to fixtures for flushing purposes and is closed by direct water pressures.
Valve Gate - A valve that lets you completely stop, but not modulate the flow within a pipe.
Valve Globe - A valve that lets you adjust the flow of water to any rate between fully on and fully off, also see gate valve.
Valve King - Liquid receiver service valve.
Valve P&T (Pressure And Temperature) - A safety valve installed on a hot water storage tank to limit temperature and pressure of the water.
Valve Pressure And Temperature (P&T) - A safety valve installed on a hot water storage tank to limit temperature and pressure of the water.
Valve Pressure Reducing - Valve installed in the water service line where it enters the building to reduce the pressure of water in the line to an acceptable pressure used in buildings (40-55 psi desired).
Valve Relief - A device designed to open if it detects excess temperature or pressure.
Valve Shut Off - A valve used to shut off the flow of gas or water into a property.
Valve Stop - A device installed in a water supply line, usually near a fixture, that permits an individual to shut off the water supply to one fixture without interrupting service to the rest of the system.
Valve Water - A device to regulate the flow of water in a pipe or other passage.
Valve Zone - A device usually placed near the heater or cooler, which controls the flow of water or steam to parts of the building; it is controlled by a zone thermostat.
Vanishes Agriculture - Varnishes designed to protect and beautify farm implements and machinery.
Vanity Bathroom - A bathroom cabinet with a lavatory mounted in the counter top.
Vapor - The gaseous form of any substance.
Vapor Barrier - A waterproof membrane or plastic sheet used in insulation. The sheathing faces the heated area to control dampness.
Vapor Condensation - Temperature at which vapor condenses from the atmosphere and forms water.
Vapor Diffusion - - The movement of water vapour between 2 areas caused by a difference in vapour pressure, independent of air movement. The rate of diffusion is determined by:
- The difference in vapour pressure
- The distance
the vapour must travel, and
- The permeability of the material to water vapour. Hence the selection of materials of low permeability for use as vapour retarders in buildings.
Vapor Water - Moisture existing as a gas in air.
Vapour Barrier - A building product installed on exterior walls and ceilings under the drywall and on the warm side of the insulation. It is used to retard the movement of water vapour into walls and prevent condensation within them. Normally, polyethylene plastic sheeting is used.
Vapour Barrier - A type of plastic sheeting that both eliminates drafts and keeps moisture from damaging a building or structure.
Vapour Diffusion - - The movement of water vapour between 2 areas caused by a difference in vapour pressure, independent of air movement. The rate of diffusion is determined by:
- The difference in vapour pressure
- The distance
the vapour must travel, and
- The permeability of the material to water vapour. Hence the selection of materials of low permeability for use as vapour retarders in buildings.
Vapour Water - Moisture existing as gas in the air.
Variable Rate - An interest rate that will vary over the term of the loan.
Variable Rate Mortgages - As you would expect from the name, variable mortgage rates go up and down and generally don't stay at the same level for too long. This is because the interest rate and subsequent level of repayment varies with the lender's interest rate. This is usually derived from Bank of England base rate or some other index. One such index is the banks' base rate - an average of the rates of several leading lenders.
Varnish - A thickened preparation of drying oil or drying oil and resin suitable for spreading on surfaces to form continuous, transparent coatings, or for mixing with pigments to make enamels.
Varnish Makers And Painters Naphtha (VM&P) - ,Li>A highly flammable petroleum product used by painters as thinning solvent and diluent- Also used in dyeing and as a cleansing agent.
Vault Barrel - A segment of a cylinder that spans as an arch; used as a structural technique to support a ceiling or roof by having all of the components act in compression as an arched ceiling; used extensively in ancient buildings and into the 19thcentury, because no structural steel or timber is needed.
Vee Joint - Tongue and groove boards with their top corners beveled so when the two boards come together a V is formed.
Vehicle - The liquid portion of a finishing material; it consists of the binder (nonvolatile) and volatile thinners.
Veining - In roofing, the characteristic lines or "stretch marks" which develop during the aging process of soft bitumens.
Vendor - Person selling a property or the seller.
Veneer - A thin facing of finishing material.
Veneer Adhered - A veneer secured and supported through adhesion to an approved bonding material applied over an approved backing.
Veneer Adhesion Type Ceramic - Thinner sections of ceramic veneer, held in place by adhesion of mortar to unit and to backing; no metal anchors are required.
Veneer Anchor Type Ceramic - Thicker sections of ceramic veneer held in place by grout and wire anchors connected to backing wall.
Veneer Ashlar - An ornamental or protective facing of masonry composed of squared stones.
Veneer Birch - Thin sheets of strong fine-grained hardwood used in furniture, flooring, and building paneling.
Veneer Brick - A vertical facing of brick laid against and fastened to sheathing of a framed wall or tile wall construction.
Veneer Wall Brick - The facing of brick commonly used on modern constructed exterior load bearing walls.
Veneer Walnut - An overlay of a thin layer of walnut wood for outer finish or decoration.
Venetian - A window composed of 3 openings.
Venetian Blinds - Blinds made of metal or wooden slats, attached to cloth tape, and worked by a cord on a pulley system, and available in many widths, colours, and sizes. Blinds provide excellent light control while allowing some view to the outside.
Venetian Lights - Lights within a frame with 3 openings.
Venetian Window - A window with one large fixed central pane and smaller panes at each side.
Vent - A pipe or duct which allows the flow of air and gasses to the outside. Also, another word for the moving glass part of a window sash, i.e. window vent.
Vent Air - - An opening in a building or structure for the passage of air.
- Valve, either manual or automatic, to remove air from the highest point of a coil or piping assembly.
Vent Back - A branch vent installed for the purpose of protecting fixture traps from siphoning; back vents include most of the vents not installed specially to permit circulation between vent stacks and soil or waste stacks.
Vent Blind - An ineffective, sometimes illegal, vent which stops in a wall thus giving the appearance of a vent but not actually functioning as a vent.
Vent Block - An opening serving as an outlet or inlet for air in a block structure.
Vent Branch - A vent pipe that connects a branch of the drainage system to the main stack.
Vent Louver - An opening fitted with a series of sloping slats arranged to admit light and air but shed rain.
Vent Louvre - An opening fitted with a series of sloping slats arranged to admit light and air but shed rain.
Vent Main - The principal artery of the venting system, to which vent branches may be connected.
Vent Pipe - A vertical pipe of relatively small dimensions which protrudes through a roof to provide for the ventilation of gasses.
Vent Power - A vent that includes a fan to speed up air flow, often installed on roofs.
Vent Ridge - A single or continuous roof vent located at eh ridge level of the roof.
Vent Roof - Ventilation originating at the roof level and usually allows for air to circulate into the attic or loft area and allows heat and moisture to escape from the building.
Vent Sleeve - Preformed flange placed over a vent pipe to seal the roofing above the vent pipe opening.
Vent Soffit - The vent opening located under the eaves to allow fresh air to enter an attic or loft area and flow upwards to the roof vents.
Vent Soil - The extension of a soil or waste stack above the highest horizontal drain connected to the stack.
Vent Stack - - A vertical vent pipe installed for the purpose of providing circulation of air to and from any part of a drainage system.
- Also called a waste vent or soil vent, it is the extension of a soil or waste stack above the highest horizontal drain connected to the stack.
Vent Static - A vent that does not include a fan.
Vent Subfloor - Ventilation areas below floor level.
Vent System - In plumbing, a system to provide a flow of air to or from a drainage system or to provide circulation of air within such system to protect traps seals from siphonage and back pressure.
Vent Waste - The extension of a soil or waste stack above the highest horizontal drain connected to the stack.
Vent Waste - Plumbing plastic pipe that carries waste water to the municipal sewage system.
Vent Yoke - A pipe connecting upward from a soil or waste stack to a vent stack for the purpose of preventing pressure changes in the stacks.
Ventilation - The mechanical system or equipment used to circulate air or to replace stale air with fresh air.
Ventilation Attic - The process of ventilating loft or attic areas.
Ventilation Gable - A triangular or rectangular ventilation opening found in a gable wall.
Ventilation Loft - The process of ventilating loft or attic areas.
Ventilation Louvre - An opening fitted with a series of sloping slats arranged to admit light and air but shed rain.
Ventilation Ridge - A single or continuous roof vent located at eh ridge level of the roof.
Ventilation Soffit - The vent opening located under the eaves to allow fresh air to enter an attic or loft area and flow upwards to the roof vents.
Ventilation Subfloor - Ventilation areas below floor level.
Ventilator - Device installed on the roof for the purpose of ventilating the interior of the building.
Ventilators Attic - - Openings in the roof or in gables for the purpose of allowing air to circulate.
- Mechanical devices with power-driven fans to force the circulation of air.
- Screened opening that provide ventilation to the loft or attic area.
Ventilators Loft - - Openings in the roof or in gables for the purpose of allowing air to circulate.
- Mechanical devices with power-driven fans to force the circulation of air.
- Screened opening that provide ventilation to the loft or attic area.
Venting - The process of installing roof vents in a roof assembly to relieve vapo pressure; The process of water in the insulation course of the roof assembly evaporating and exiting via the roof vents
Verandah - A porch along the outside of a building (sometimes partly enclosed).
Verge - The edge of a roof overhang usually above a gable.
Verge Boards - Boards attached at the verge of a roof line.
Vermiculite - An aggregate somewhat similar to perlite that is used as an aggregate in lightweight roof decks and deck fills. It is formed from mica, a hydrous silicate with the ability of expanding on heating to form lightweight material with insulation quality. Used as bulk insulation and also as aggregate in insulating and acoustical plaster and in insulating concrete.
Vermillon American - Chrome orange pigment.
Vertical Blinds - Strips of fabric (louvers) suspended vertically from a head-rail.
Vertical Edge Grain - Edge grain lumber has been sawed parallel to the pith of the log and approximately at right angles to the growth rings; i.e., the rings form an angle of 45° or more with the surface of the piece.
Viewing - Arrangement for potential buyers to see a seller's property and usually through an estate agent in advance. In most cases the owner of the property will show you around their home.
Villa - A detached or semidetached substantial house.
Vinyl - A synthetic type of siding used for its economic value and durability.
Vinyl (PVC) - Polymer formed by polymerization of vinyl chloride monomer. Sometimes called vinyl.
Violin Plane - Small plane used for precision finishing and decorative work.
Viscosity - The internal frictional resistance offered by a fluid to change of shape or to the relative motion or flow of its parts.
Viscosity Absolute - A method of measuring viscosity using the poise as the basic measurement unit; this method utilizes a partial vacuum to induce flow in the viscometer
Viscosity Kinematic - A method of measuring viscosity using the stoke as the basic measurement unit.
Vise Grip Hold Down Clamp - Squeezes objects together to promote bonding.
Vise Grips - Holds objects in place while sawing or joining. Feature clamp pads that protect the surface and allow for gripping tapered pieces. Ideal for laminating or veneering.
Vise Machinist - Designed to be bolted to a worktop. Able to swivel on it's base. Useful for holding metal pieces and provides an anvil surface for striking metal.
Vise Woodworkers - Indispensable for the workshop. A solid investment for a workbench. Has smooth jaws designed to not damage wood.
Visible Light Transmittance - The percentage of visible light (390 to 770) nanometers) within the solar spectrum that is transmitted through glass.
Visqueen - A 4 mil or 6 mil plastic sheeting.
Visual Mock Up - Small scale demonstration of a finished construction product.
VM&P (Varnish Makers And Painters Naphtha) - ,Li>A highly flammable petroleum product used by painters as thinning solvent and diluent- Also used in dyeing and as a cleansing agent.
Void - Cardboard rectangular boxes that are installed between the earth (between caissons) and the concrete foundation wall. Used when expansive soils are present.
Voids Air - The small hollow spaces in cement paste caused by unwanted entrapped air bubbles and the smaller voids caused by air-entraining admixtures.
Volatile Thinner - A liquid that evaporates readily and is used to thin or reduce the consistency of finishes without altering the relative volumes of pigment and nonvolatile vehicles.
Volt - A unit of electrical force. Volts = Current (amps) x Resistance (OHMs)
Volt Meter - Measures the voltage flowing through a circuit. The circuit must be closed to allow the voltage to flow.
Voltage - A measure of electrical potential. Most properties are wired with 110 and 220 volt lines. The 110 volt power is used for lighting and most of the other circuits. The 220 volt power is usually used for the kitchen range, hot water heater and dryer.
Voltage Arc - The voltage (electrical potential) across the welding arc.
Voltmeter - Measures the voltage flowing through a circuit. The circuit must be closed to allow the voltage to flow.
Volume Absolute - The volume of an ingredient in its solid state, without voids between individual pieces or particles; in the case of fluids, the cubic content occupied; in concrete, it is the actual volume occupied by the different ingredients determined by dividing the weight of each ingredient in pounds by its specific gravity times the weight of one cubic foot of water in pounds; example. the absolute volume of one sack of cement equals 94 divided by 3.15 times 62.4 equals 0.478 cubic feet.
Volume Air - Quantity of air in cubic feet, usually per minute, at atmospheric pressure.
Volume Of Air - The measure of volume of air. When testing systems, find the CFM by multiplying the face velocity times the free area in square feet. The face velocity is the amount of air passing through the face of an outlet or return. Free area is the total area of the openings in the outlet or inlet through which air can pass.
Voussoir - The shaped bricks or stones over a window forming an arch or head of that window.
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