A
small second roof built behind the back side of a fireplace
chimney to divert water around the chimney. Also, the
plate at the bottom of some—usually exterior—door
openings. Sometimes called a threshold.
Sack
mix- The amount of Portland cement in a cubic
yard of concrete mix. Generally, 5 or 6 sack is required
in a foundation wall.
Sales
contract - A contract between a buyer and seller
which should explain: (1) What the purchase includes,
(2) What guarantees there are, (3) When the buyer can
move in, (4) What the closing costs are, and (5) What
recourse the parties have if the contract is not fulfilled
or if the buyer cannot get a mortgage commitment at
the agreed upon time.
Sand
float finish- Lime that is mixed with sand, resulting
in a textured finish on a wall.
Sanitary
sewer- A sewer system designed for the collection
of waste water from the bathroom, kitchen and laundry
drains, and is usually not designed to handle storm
water.
Sash- A single light frame containing one or more lights of
glass. The frame that holds the glass in a window, often
the movable part of the window.
Sash
balance- A device, usually operated by a spring
and designed to hold a single hung window vent up and
in place
Saturated
felt- A felt which is impregnated with tar or
asphalt.
Schedule
(window, door, mirror)- A table on the blueprints
that list the sizes, quantities and locations of the
windows, doors and mirrors.
Scrap
out- The removal of all drywall material and
debris after the home is "hung out" (installed)
with drywall.
Scratch
coat- The first coat of plaster, which is scratched
to form a bond for a second coat.
Screed,
concrete- To level off concrete to the correct
elevation during a concrete pour.
Screed,
plaster- A small strip of wood, usually the thickness
of the plaster coat, used as a guide for plastering.
Scribing- Cutting and fitting woodwork to an irregular surface.
Scupper- (1) An opening for drainage in a wall, curb or parapet.
(2) The drain in a downspout or flat roof, usually connected
to the downspout.
Sealer- A finishing material, either clear or pigmented, that
is usually applied directly over raw wood for the purpose
of sealing the wood surface.
Seasoning- Drying and removing moisture from green wood in order
to improve its usability.
Self-sealing
shingles- Shingles containing factory-applied
strips or spots of self-sealing adhesive.
Semigloss
paint or enamel- A paint or enamel made so that
its coating, when dry, has some luster but is not very
glossy. Bathrooms and kitchens are normally painted
semi-gloss
Septic
system- An on site waste water treatment system.
It usually has a septic tank which promotes the biological
digestion of the waste, and a drain field which is designed
to let the left over liquid soak into the ground. Septic
systems and permits are usually sized by the number
of bedrooms in a house.
Service
entrance panel- Main power cabinet where electricity
enters a home wiring system.
S
ervice
equipment- Main control gear at the service entrance,
such as circuit breakers, switches, and fuses.
Service
lateral- Underground power supply line.
Setback
Thermostat- A thermostat with a clock which can
be programmed to come on or go off at various temperatures
and at different times of the day/week. Usually used
as the heating or cooling system thermostat.
Settlement- Shifts in a structure, usually caused by freeze-thaw
cycles underground.
Sewage
ejector- A pump used to 'lift' waste water to
a gravity sanitary sewer line. Usually used in basements
and other locations which are situated bellow the level
of the side sewer.
Sewer
lateral- The portion of the sanitary sewer which
connects the interior waste water lines to the main
sewer lines. The side sewer is usually buried in several
feet of soil and runs from the house to the sewer line.
It is usually 'owned' by the sewer utility, must be
maintained by the owner and may only be serviced by
utility approved contractors. Sometimes called side
sewer.
Sewer
stub- The junction at the municipal sewer system
where the home's sewer line is connected.
Sewer
tap- The physical connection point where the
home's sewer line connects to the main municipal sewer
line.
Shake- A wood roofing material, normally cedar or redwood.
Produced by splitting a block of the wood along the
grain line. Modern shakes are sometimes machine sawn
on one side. See shingle.
Shear
block- Plywood that is face nailed to short (2
X 4's or 2 X 6's) wall studs (above a door or window,
for example). This is done to prevent the wall from
sliding and collapsing.
Sheathing,
sheeting- The structural wood panel covering,
usually OSB or plywood, used over studs, floor joists
or rafters/trusses of a structure.
Shed roof- A roof containing
only one sloping plane.
Sheet
metal work- All components of a house employing
sheet metal, such as flashing, gutters, and downspouts.
Sheet
metal duct work- The heating system. Usually
round or rectangular metal pipes and sheet metal (for
Return Air) and installed for distributing warm (or
cold) air from the furnace to rooms in the home.
Sheet
rock- Drywall-Wall board or gypsum- A manufactured
panel made out of gypsum plaster and encased in a thin
cardboard. Usually 1/2" thick and 4' x 8' or 4'
x 12' in size. The 'joint compound'. 'Green board' type
drywall has a greater resistance to moisture than regular
(white) plasterboard and is used in bathrooms and other
"wet areas".
Shim- A small piece of scrap lumber or shingle, usually wedge
shaped, which when forced behind a furring strip or
framing member forces it into position. Also used when
installing doors and placed between the door jamb legs
and 2 X 4 door trimmers. Metal shims are wafer 1 1/2"
X 2" sheet metal of various thickness' used to
fill gaps in wood framing members, especially at bearing
point locations.
Shingles- Roof covering of asphalt. asbestos, wood, tile, slate,
or other material cut to stock lengths, widths, and
thickness'.
Shingles,
siding- Various kinds of shingles, used over
sheathing for exterior wall covering of a structure.
Short
circuit- A situation that occurs when hot and
neutral wires come in contact with each other. Fuses
and circuit breakers protect against fire that could
result from a short.
Shutter- Usually lightweight louvered decorative frames in the
form of doors located on the sides of a window. Some
shutters are made to close over the window for protection.
Side
sewer- The portion of the sanitary sewer which
connects the interior waste water lines to the main
sewer lines. The side sewer is usually buried in several
feet of soil and runs from the house to the sewer line.
It is usually 'owned' by the sewer utility, must be
maintained by the owner and may only be serviced by
utility approved contractors. Sometimes called sewer
lateral.
Siding- The finished exterior covering of the outside
walls of a frame building.
Siding,
(lap siding)- Slightly wedge-shaped boards used
as horizontal siding in a lapped pattern over the exterior
sheathing. Varies in butt thickness from ½ to
¾ inch and in widths up to 12".
Sill- (1) The 2 X 4 or 2 X 6 wood plate framing member that
lays flat against and bolted to the foundation wall
(with anchor bolts) and upon which the floor joists
are installed. Normally the sill plate is treated lumber.
(2) The member forming the lower side of an opening,
as a door sill or window sill.
Sill
cock- An exterior water faucet (hose bib).
Sill
plate (mudsill)- Bottom horizontal member of
an exterior wall frame which rests on top a foundation,
sometimes called mudsill. Also sole plate, bottom member
of an interior wall frame.
Sill
seal- Fiberglass or foam insulation installed
between the foundation wall and sill (wood) plate. Designed
to seal any cracks or gaps.
Single
hung window- A window with one vertically sliding
sash or window vent.
Skylight- A more or less horizontal window located on the
roof of a building.
Slab,
concrete- Concrete pavement, i.e. driveways,
garages, and basement floors.
Slab,
door- A rectangular door without hinges or frame.
Slab
on grade- A type of foundation with a concrete
floor which is placed directly on the soil. The edge
of the slab is usually thicker and acts as the footing
for the walls.
Slag- Concrete cement that sometimes covers the vertical face
of the foundation void material.
Sleeper- Usually, a wood member embedded in concrete, as in a
floor, that serves to support and to fasten the subfloor
or flooring.
Sleeve(s)- Pipe installed under the concrete driveway or
sidewalk, and that will be used later to run sprinkler
pipe or low voltage wire.
Slope- The incline angle of a roof surface, given as a ratio
of the rise (in inches) to the run (in feet). See also
pitch.
Slump- The "wetness" of concrete. A 3 inch slump
is dryer and stiffer than a 5 inch slump.
Soffit- The area below the eaves and overhangs. The underside
where the roof overhangs the walls. Usually the underside
of an overhanging cornice.
Soil
pipe- A large pipe that carries liquid and solid
wastes to a sewer or septic tank.
Soil
stack- A plumbing vent pipe that penetrates the
roof.
Sole
plate- The bottom, horizontal framing member
of a wall that's attached to the floor sheeting and
vertical wall studs.
Solid
bridging- A solid member placed between adjacent
floor joists near the center of the span to prevent
joists or rafters from twisting.
Sonotube- Round, large cardboard tubes designed to hold wet concrete
in place until it hardens.
Sound
attenuation- Sound proofing a wall or subfloor,
generally with fiberglass insulation.
Space
heat- Heat supplied to the living space, for
example, to a room or the living area of a building.
Spacing- The distance between individual members or shingles
in building construction.
Span-
The clear distance that a framing member carries a load
without support between structural supports. The horizontal
distance from eaves to eaves.
Spec
home- A house built before it is sold. The builder
speculates that he can sell it at a profit.
Specifications
or Specs- A narrative list of materials, methods,
model numbers, colors, allowances, and other details
which supplement the information contained in the blue
prints. Written elaboration in specific detail about
construction materials and methods. Written to supplement
working drawings.
Splash
block- Portable concrete (or vinyl) channel generally
placed beneath an exterior sill cock (water faucet)
or downspout in order to receive roof drainage from
downspouts and to divert it away from the building.
Square- A unit of measure-100 square feet-usually applied to
roofing and siding material. Also, a situation that
exists when two elements are at right angles to each
other. Also a tool for checking this.
Square-tab
shingles- Shingles on which tabs are all the
same size and exposure.
Squeegie- Fine pea gravel used to grade a floor (normally before
concrete is placed).
Stack
(trusses)- To position trusses on the walls in
their correct location.
Standard
practices of the trade(s)- One of the more common
basic and minimum construction standards. This is another
way of saying that the work should be done in the way
it is normally done by the average professional in the
field.
Starter
strip- Asphalt roofing applied at the eaves that
provides protection by filling in the spaces under the
cutouts and joints of the first course of shingles.
Stair
carriage or stringer- Supporting member for stair
treads. Usually a 2 X 12 inch plank notched to receive
the treads; sometimes called a "rough horse."
Stair
landing- A platform between flights of stairs
or at the termination of a flight of stairs. Often used
when stairs change direction. Normally no less than
3 ft. X 3 ft. square.
Stair
rise- The vertical distance from stair tread
to stair tread (and not to exceed 7 ½").
Static
vent- A vent that does not include a fan.
STC
(Sound Transmission Class)- The measure of sound
stopping of ordinary noise.
Steel
inspection- A municipal and/or engineers inspection
of the concrete foundation wall, conducted before concrete
is poured into the foundation panels. Done to insure
that the rebar (reinforcing bar), rebar nets, void material,
beam pocket plates, and basement window bucks are installed
and wrapped with rebar and complies with the foundation
plan.
Step
flashing- Flashing application method used where
a vertical surface meets a sloping roof plane. 6"
X 6" galvanized metal bent at a 90 degree angle,
and installed beneath siding and over the top of shingles.
Each piece overlaps the one beneath it the entire length
of the sloping roof (step by step).
Stick
built- A house built without prefabricated parts.
Also called conventional building.
Stile- An upright framing member in a panel door.
Stool- The flat molding fitted over the window sill between
jambs and contacting the bottom rail of the lower sash.
Also another name for toilet.
Stop
box- Normally a cast iron pipe with a lid (@
5" in diameter) that is placed vertically into
the ground, situated near the water tap in the yard,
and where a water cut-off valve to the home is located
(underground). A long pole with a special end is inserted
into the curb stop to turn off/on the water.
Stop
Order- A formal, written notification to a contractor
to discontinue some or all work on a project for reasons
such as safety violations, defective materials or workmanship,
or cancellation of the contract.
Stops- Moldings along the inner edges of a door or window frame.
Also valves used to shut off water to a fixture.
Stop
valve- 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.
Storm
sash or storm window-. An extra window usually
placed outside of an existing one, as additional protection
against cold weather.
Storm
sewer- A sewer system designed to collect storm
water and is separated from the waste water system.
Story- That part of a building between any floor or between
the floor and roof.
Strike- The plate on a door frame that engages a latch
or dead bolt.
String,
stringer- A timber or other support for cross
members in floors or ceilings. In stairs, the supporting
member for stair treads. Usually a 2 X 12 inch plank
notched to receive the treads
Strip
flooring- Wood flooring consisting of narrow,
matched strips.
Structural
floor- A framed lumber floor that is installed
as a basement floor instead of concrete. This is done
on very expansive soils.
Stub,
stubbed- To push through.
Stucco- Refers to an outside plaster finish made with Portland
cement as its base.
Stud- A vertical wood framing member, also referred
to as a wall stud, attached to the horizontal sole plate
below and the top plate above. Normally 2 X 4's or 2
X 6's, 8' long (sometimes 92 5/8"). One of a series
of wood or metal vertical structural members placed
as supporting elements in walls and partitions.
Stud
framing- A building method that distributes structural
loads to each of a series of relatively lightweight
studs. Contrasts with post-and-beam.
Stud
shoe- A metal, structural bracket that reinforces
a vertical stud. Used on an outside bearing wall where
holes are drilled to accommodate a plumbing waste line.
Subfloor- The framing components of a floor to include the sill
plate, floor joists, and deck sheeting over which a
finish floor is to be laid.
Sump- Pit or large plastic bucket/barrel inside the home designed
to collect ground water from a perimeter drain system.
Sump
pump- A submersible pump in a sump pit that pumps
any excess ground water to the outside of the home.
Suspended
ceiling- A ceiling system supported by hanging
it from the overhead structural framing.
Sway
brace- Metal straps or wood blocks installed
diagonally on the inside of a wall from bottom to top
plate, to prevent the wall from twisting, racking, or
falling over "domino" fashion.
Switch- A device that completes or disconnects an electrical
circuit.
T

T & G, tongue and groove- A joint made by
a tongue (a rib on one edge of a board) that fits into
a corresponding groove in the edge of another board
to make a tight flush joint. Typically, the subfloor
plywood is T & G.
Tab
- The exposed portion of strip shingles defined
by cutouts.
Tail
beam- A relatively short beam or joist supported
in a wall on one end and by a header at the other.
Take
off- The material necessary to complete a job.
Taping- The process of covering drywall joints with paper
tape and joint compound.
T
bar- Ribbed, "T" shaped bars with a
flat metal plate at the bottom that are driven into
the earth. Normally used chain link fence poles, and
to mark locations of a water meter pit.
Teco- Metal straps that are nailed and secure the roof rafters
and trusses to the top horizontal wall plate. Sometimes
called a hurricane clip.
Tee- A "T" shaped plumbing fitting.
Tempered- Strengthened. Tempered glass will not shatter nor create
shards, but will "pelletize" like an automobile
window. Required in tub and shower enclosures and locations,
entry door glass and sidelight glass, and in a windows
when the window sill is less than 16" to the floor.
Termites- Wood eating insects that superficially resemble ants
in size and general appearance, and live in colonies.
Termite
shield- A shield, usually of galvanized metal,
placed in or on a foundation wall or around pipes to
prevent the passage of termites.
Terra
cotta- A ceramic material molded into masonry
units.
Thermoply
™- Exterior laminated sheathing nailed
to the exterior side of the exterior walls. Normally
¼ " thick, 4 X 8 or 4 x 10 sheets with an
aluminumized surface.
Thermostat- A device which relegates the temperature of a room or
building by switching heating or cooling equipment on
or off.
Three-dimensional
shingles- Laminated shingles. Shingles that have
added dimensionality because of extra layers or tabs,
giving a shake-like appearance. May also be called "architectural
shingles".
Threshold- The bottom metal or wood plate of an exterior
door frame. Generally they are adjustable to keep a
tight fit with the door slab.
Time
and materials contract- A construction contract
which specifies a price for different elements of the
work such as cost per hour of labor, overhead, profit,
etc. A contract which may not have a maximum price,
or may state a 'price not to exceed'.
Tinner- Another name for the heating contractor.
Tip
up- The downspout extension that directs water
(from the home's gutter system) away from the home.
They typically swing up when mowing the lawn, etc.
Title- Evidence (usually in the form of a certificate or deed)
of a person's legal right to ownership of a property.
T
JI
or TJ- Manufactured structural building component
resembling the letter "I". Used as floor joists
and rafters. I-joists include two key parts: flanges
and webs. The flange or from of the I joist may be made
of laminated veneer lumber or dimensional lumber, usually
formed into a 1 ½" width. The web or center
of the I-joist is commonly made of plywood or oriented
strand board (OSB). Large holes can be cut in the web
to accommodate duct work and plumbing waste lines. I-joists
are available in lengths up to 60'' long.
Toenailing- To drive a nail in at a slant. Method used to secure
floor joists to the plate.
Top
chord- The upper or top member of a truss.
Top
plate- Top horizontal member of a frame wall
supporting ceiling joists, rafters, or other members.
Transmitter
(garage door)- The small, push button device
that causes the garage door to open or close.
Trap- A plumbing fitting that holds water to prevent air,
gas, and vermin from backing up into a fixture.
Tread- The walking surface board in a stairway on which the
foot is placed.
Treated
lumber- A wood product which has been impregnated
with chemical pesticides such as CCA (Chromated Copper
Arsenate) to reduce damage from wood rot or insects.
Often used for the portions of a structure which are
likely to be in contact with soil and water. Wood may
also be treated with a fire retardant.
Trim
(plumbing, heating, electrical)- The work that
the "mechanical" contractors perform to finish
their respective aspects of work, and when the home
is nearing completion and occupancy.
Trim-
Interior- The finish materials in a building,
such as moldings applied around openings (window trim,
door trim) or at the floor and ceiling of rooms (baseboard,
cornice, and other moldings). Also, the physical work
of installing interior doors and interior woodwork,
to include all handrails, guardrails, stair way balustrades,
mantles, light boxes, base, door casings, cabinets,
countertops, shelves, window sills and aprons, etc.
Exterior- The finish materials on the exterior a building,
such as moldings applied around openings (window trim,
door trim), siding, windows, exterior doors, attic vents,
crawl space vents, shutters, etc. Also, the physical
work of installing these materials
Trimmer- The vertical stud that supports a header at a
door, window, or other opening.
Truss- An engineered and manufactured roof support member with
"zig-zag" framing members. Does the same job
as a rafter but is designed to have a longer span than
a rafter.
Tub
trap- Curved, "U" shaped section of
a bath tub drain pipe that holds a water seal to prevent
sewer gasses from entering the home through tubs water
drain.
Turnkey- A term used when the subcontractor provides all materials
(and labor) for a job.
Turpentine- A petroleum, volatile oil used as a thinner in paints
and as a solvent in varnishes
U

UL (Underwriters' Laboratories)- An independent
testing agency that checks electrical devices and other
components for possible safety hazards.
Undercoat- A coating applied prior to the finishing or top coats
of a paint job. It may be the first of two or the second
of three coats. Sometimes called the Prime coat.
Underground
plumbing- The plumbing drain and waste lines
that are installed beneath a basement floor.
Underlayment- A ¼" material placed over the subfloor plywood
sheeting and under finish coverings, such as vinyl flooring,
to provide a smooth, even surface. Also a secondary
roofing layer that is waterproof or water-resistant,
installed on the roof deck and beneath shingles or other
roof-finishing layer.
Union- A plumbing fitting that joins pipes end-to-end so they
can be dismantled.
Utility
easement- The area of the earth that has electric,
gas, or telephone lines. These areas may be owned by
the homeowner, but the utility company has the legal
right to enter the area as necessary to repair or service
the lines.
V

Valley- The "V" shaped area of a roof where two sloping
roofs meet. Water drains off the roof at the valleys.
V
alley
flashing- Sheet metal that lays in the "V"
area of a roof valley.
Valuation- An inspection carried out for the benefit of the mortgage
lender to ascertain if a property is a good security
for a loan.
Valuation
fee- The fee paid by the prospective borrower
for the lender's inspection of the property. Normally
paid upon loan application.
Vapor
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 vapor into walls and prevent condensation within
them. Normally, polyethylene plastic sheeting is used.
Variable
rate- An interest rate that will vary over the
term of the loan.
Veneer- Extremely thin sheets of wood. Also a thin slice of
wood or brick or stone covering a framed wall.
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.
Vermiculite- A mineral used as bulk insulation and also as aggregate
in insulating and acoustical plaster and in insulating
concrete floors.
Veterans
Administration (VA)- A federal agency that insures
mortgage loans with very liberal down payment requirements
for honorably discharged veterans and their surviving
spouses.
Visqueen- A 4 mil or 6 mil plastic sheeting.
Void- Cardboard rectangular boxes that are installed
between the earth (between caissons) and the concrete
foundation wall. Used when expansive soils are present.
Voltage- A measure of electrical potential. Most homes 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.
W

Wafer board - A manufactured wood panel made
out of 1"- 2" wood chips and glue. Often used
as a substitute for plywood in the exterior wall and
roof sheathing.
Walk-Through- A final inspection of a home before "Closing"
to look for and document problems that need to be corrected.
Wall
out- When a painter pray paints the interior
of a home.
Warping- Any distortion in a material.
Warranty- In construction there are two general types of warranties.
One is provided by the manufacturer of a product such
as roofing material or an appliance. The second is a
warranty for the labor. For example, a roofing contract
may include a 20 year material warranty and a 5 year
labor warranty. Many new homebuilders provide a one
year warranty. Any major issue found during the first
year should be communicated to the builder immediately.
Small items can be saved up and presented to the builder
for correction periodically through the first year after
closing.
Waste
pipe and vent- Plumbing plastic pipe that carries
waste water to the municipal sewage system.
Water
board- Water resistant drywall to be used in
tub and shower locations. Normally green or blue colored
Water
closet- Another name for toilet.
Water
meter pit (or vault)- The box /cast iron bonnet
and concrete rings that contains the water meter.
Water-repellent
preservative- A liquid applied to wood to give
the wood water repellant properties
Water
table- The location of the underground water,
and the vertical distance from the surface of the earth
to this underground water.
Water
tap- The connection point where the home water
line connects to the main municipal water system.
Watt- A measure of the electrical requirement of an appliance
calculated by multiplying the voltage times the amperage.
For example: a 150 watt light bulb which uses 110 volt
power needs a little less than 1 amp (110 volts X 1
amp= 110 watts).
W
C- An abbreviation for water closet (toilet).
Weatherization- Work on a building exterior in order to reduce energy
consumption for heating or cooling. Work involving adding
insulation, installing storm windows and doors, caulking
cracks and putting on weather-stripping.
Weatherstrip- Narrow sections of thin metal or other material installed
to prevent the infiltration of air and moisture around
windows and doors.
Weep
holes- Small holes in storm window frames that
allow moisture to escape.
Whole
house fan- A fan designed to move air through
and out of a home and normally installed in the ceiling.
Wind
bracing- Metal straps or wood blocks installed
diagonally on the inside of a wall from bottom to top
plate, to prevent the wall from twisting, racking, or
falling over "domino" fashion.
Window
buck- Square or rectangular box that is installed
within a concrete foundation or block wall. A window
will eventually be installed in this "buck"
during the siding stage of construction
Window
frame- The stationary part of a window unit;
window sash fits into the window frame.
Window
sash- The operating or movable part of a window;
the sash is made of window panes and their border.
Wire
nut- A plastic device used to connect bare wires
together.
Wonderboard
™- A panel made out of concrete and fiberglass
usually used as a ceramic tile backing material. Commonly
used on bathtub decks.
Wrapped
drywall- Areas that get complete drywall covering,
as in the doorway openings of bifold and bipass closet
doors.
Y

Y- A "Y" shaped plumbing fitting.
Yard
of concrete- One cubic yard of concrete is 3'
X 3' X 3' in volume, or 27 cubic feet. One cubic yard
of concrete will pour 80 square feet of 3 ½"
sidewalk or basement/garage floor.
Yoke- The location where a home's water meter is sometimes
installed between two copper pipes, and located in the
water meter pit in the yard.
Z

Z-bar
flashing- Bent, galvanized metal flashing that's
installed above a horizontal trim board of an exterior
window, door, or brick run. It prevents water from getting
behind the trim/brick and into the home.
Zone- The section of a building that is served by one heating
or cooling loop because it has noticeably distinct heating
or cooling needs. Also, the section of property that
will be watered from a lawn sprinkler system.
Zone
valve- 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.
Zoning- A governmental process and specification which limits
the use of a property e.g. single family use, high rise
residential use, industrial use, etc. Zoning laws may
limit where you can locate a structure. Also see building
codes.