Term Definition
Flag 1 like
See Flagstone
Flagpole1 like
Pole employed for flag display
Flagpole Outrigger 1 like
A protruding pole from a structure to serve as a flagpole
Flagstone 0 likes
Flat stones 1 to 4 inches thick employed for walks, steps, floors, and vertical veneer instead of brick
Flake 0 likes
A small flat wood particle of predetermined dimensions and uniform thickness with fiber direction in the plane of the flake; similar to a small piece of veneer for use in the manufacture of flakeboard
Flakeboard1 like
A wood panel manufactured with 1 to 2 inch wood chips and glue; often employed to substitute plywood in an exterior wall and roof sheathing; also called OSB or wafer board
Flaking 1 like
Disengagement of small portions of paint film
Flame Retention Burner 1 like
An oil burner that maintains a flame near the nozzle surface designed for efficient residential use
Flame Spread 3 likes
Transmission of a flame away from the source across the surface of a liquid or a solid, or throughout a gas
Flame Spread Classification 0 likes
A standard measurement of a building’s relative surface burning properties
Flame Spread Rating 0 likes
A measure of the speed with which a fire will spread across a material’s surface
Flame Test for Leaks 0 likes
Tool which is primarily a torch; when a halogen mixture is added to the flame, it changes color in the presence of heated copper
Flameproof Tile 0 likes
Tile made flame-resistant
Flameproofing 0 likes
Making an object flame-resistant
Flammable 1 like
Easily ignited
Flammable Liquids 0 likes
Liquids with a flash point beneath 140° F (60° C) and a vapor pressure not exceeding 40 psia (2.81 kg/cm2) at 100° F (38° C)
Flange 1 like
A rib or rim on an object to strengthen, guide, or fasten to another item
Flanged Pipe 2 likes
A pipe with a projecting ring, ridge or collar that thwarts sliding, strengthens, or houses attachments
Flanking Paths 0 likes
Paths where sound travels around an impeding element
Flapper Valve1 like
flapper valve
Thin metal valve in refrigeration compressors, permitting gaseous refrigerants to flow in one direction only; plastic flapper valves are used in toilets.
Flare 1 like
Enlarged end of a piece of flexible tubing where it is connected to a fitting or another piece of tubing at an approximate 45 degree angle; fittings grip it tightly to ensure the joint is strong and doesn’t leak
Flare Header 0 likes
Brick burned on one end to a darker color than on its face
Header of darker color than the wall’s field
Flare Nut 0 likes
Fitting utilized to clamp tubing flare against another fitting
Flash Cove 0 likes
Sheet of strong flooring turned up at the edge and finished against the wall to form an integral baseboard
Flash Gas 0 likes
Instant evaporation of liquid refrigerant in evaporator, cooling the remaining liquid refrigerant to the sought after evaporation temperature
Flash Point 0 likes
Temperature where material discharges enough flammable vapor to ignite quickly when exposed to a flame under pre-set conditions
Flash Set 1 like
Swift development of rigidity in a mixed Portland cement paste, mortar, or concrete; normally with the evolution of significant heat, the rigidity can’t be dissipated and the plasticity can’t be retrieved without adding water; also called Quick Set or Grab Set
Flash Weld 0 likes
Resistance weld in which mating parts are brought together under intense pressure as a strong electrical current is passed through the joint for welding
Flashing 0 likes
Sheet metal or other impervious material employed in roofing and wall creation in order to protect a building from water exposure
Uneven appearance on surfaces where coating dries with spotty variations of color or gloss
Flashing Block 0 likes
Metal flashing employed to block a parapet wall and to stop roof leaks around these walls in masonry
Flashing Cement1 like
flashing cement
Plastic mixture of cutback bitumen, mineral stabilizers, asbestos or other inorganic fibers for reinforcement; with a solvent, employed as an adhesive
Flashing, Roof1 like
flashing, roof
See Roof Flashing
Flashing, Step 0 likes
See Step Flashing
Flashing, Through-Wall 0 likes
See Through-Wall Flashing
Flat Arch1 like
flat arch
An arch or span made with a flat top and bottom; steel angle iron is generally employed to help support it
Flat Asphalt 0 likes
Roofing asphalt that softens at approximately l70° F (77° C)
Flat Finish 1 like
Dull finish without gloss
Flat Head Screwdriver1 like
flat head screwdriver
See Slotted Screwdriver
Flat Head Wood Screw (FHWS)1 like
flat head wood screw
A wood screw that has a countersunk head flush with the surface
Flat Mill 0 likes
Grinding mill employed to grind paint pigments; it consists of two stones, the lower revolves and the upper is stationary
Flat Mold 0 likes
Thin wood strips mounted above the butt seam of cabinet skins
Flat Paint1 like
flat paint
An interior paint with a large percentage of pigment that dries to a flat, dull finish
Flat Seam 0 likes
A sheet metal roofing seam created flat against the roof’s surface
Flat Slab 0 likes
Reinforced concrete slab that spans two directions to supporting columns without any beams or girders; a 2-way slab supported only at corners
Flat Stretcher Course 0 likes
A brick course of stretchers set on edge, exposing their flat sides on the surface or face of the wall
Flat Trowel1 like
flat trowel
Employed with the hawk for moving mortar from the mortarboard to the wall or other vertical surfaces; often employed for spreading pure cement on finished floor coats, spreading mortar on floor surfaces before the tiles set, or to finish a freshly poured concrete floor
Flat Varnish 0 likes
Varnish that dries with less gloss, made by adding materials such as silica, wax, or metallic soaps
Flat Wall Paint1 like
flat wall paint
Interior paint designed to produce a lusterless finish
Flat Washer2 likes
flat washer
A washer that positions under a bolt head or a nut to disperse the load, stop loosening, and protect the surface
Flat-Grained Wood 0 likes
Lumber sawed parallel to the pith and roughly tangential to the growth rings; the annual growth rings are at an angle less than 45 degrees with the surface
Flatplate Collector 1 like
The most common and frequently-employed collector in a solar system; the most visible part of a solar system on the roof or in the yard; device that converts sunlight to heat on a plane usually made of metal or plastic; a heat transfer liquid flows through the collector to move heat that will be used or stored
Flattening Agent 0 likes
Usually a metallic soap employed in varnishes and lacquers to decrease the gloss or provide a rubbed appearance; also called Flatting Agent
Flattening Oil 0 likes
A varnish-like substance composed of thickened oil dissolved in a thinner that transforms paste paint to a flat paint; also known as Flatting Oil
Flatting 0 likes
Gloss reduction in coating film
Flatting Agent 1 like
See Flattening Agent
Flatting Oil 0 likes
See Flattening Oil
Flatwork 0 likes
Concrete floor, driveway, basement, or sidewalk
Flecks 0 likes
See Wood Rays
Flemish Bond 0 likes
A brick bond with headers and stretchers alternating in every course laid to consistently break joints; each header is positioned in the middle of the stretchers in courses above and beneath it
Flemish Cross Bond 0 likes
A brick bond with alternate courses of Flemish headers and stretcher courses; the headers are directly above each other and the alternate stretcher courses cross over one another
Flemish Garden Bond 0 likes
Brick bond where bricks are positioned so each course has a header for every 3 or 4 stretchers
Flex1 like
Flexible electrical conduit
Flexibility 0 likes
Capable of conforming or bending
Capability of an asphalt pavement structure to conform to the foundation settlement; flexibility of the asphalt paving mixture is usually improved with large asphalt content
Flexible 0 likes
Not stiff; bendable, the antithesis of rigid
Flexible Conduit 0 likes
Electrical conduit constructed of a spiral metallic strip
Flexible Cord1 like
flexible cord
A flexible insulated electrical cable with a plug at one or either end employed to connect an appliance or other fixture to a receptacle without tangling
Flexible Coupling 0 likes
A mechanical connection adapting to poor alignment between moving parts
Flexible Ductwork 0 likes
Flexible ductwork produced in various diameters, made from spiral wire covered in plastic and insulated, employed to move air in heating, cooling and ventilating systems
Flexible Wiring1 like
flexible wiring
Electrical wiring allowing motion from expansion, contraction, vibration, or rotation
Flexural Strength 1 like
Characteristic of a material or structural part describing its ability to resist failure during bending
Resistance of a specific sample size of a gypsum board to failure due to a transverse load
Flexure Formula 0 likes
A formula defining values for the design of parts or elements that may have to bend
Flint Paper 1 like
Affordable abrasive paper grayish-white in color with a short life cycle
Flitch-Sliced Veneer 0 likes
A thin sheet of wood cut by passing a block of wood vertically against a long, sharp blade
Float 2 likes
Apparatus or tool for surface smoothing, employed by plasterers and concrete masons
Sum of money exceeding daily needs
Float Coat 0 likes
Final mortar coat over which the neat, pure, or skim coat is applied
Float Finish 0 likes
A finish coat roughened by aggregate material in plaster mortar
Float Glass 0 likes
Glass sheet made by cooling a layer of liquid glass on a molten tin bath
Float Strip 0 likes
A strip of wood approximately ¼ inch thick and 1-1/4 inch wide; also a guide to line up mortar surfaces
Float Switch2 likes
float switch
An electrical switch triggered by the rise or fall of a float in liquid
Float Trap 0 likes
Floating apparatus in a plumbing fixture which regulates a valve to stop sewer air gases from escaping through the fixture
Float Valve1 like
float valve
Valve which functions by a sphere or pan floating on a liquid, controlling its level
Floating 0 likes
The stage before the last one in concrete work, smoothing off the job and bringing water to the surface by employing a hand or bull float
Floating Angle 1 like
Applying gypsum board, allowing structural movement in interior corners
Floating Edge 0 likes
An edge indirectly above a framing member and unsupported in gypsum board installation
Floating Joint 0 likes
Condition where the butt joint is not directly above framing member in gypsum board installation; floating joints should be back-blocked
Floating Wall 0 likes
Non-bearing wall constructed on a concrete floor so that the bottom two horizontal plates compress or pull apart if the concrete floor moves up or down; typically constructed on basements and garage slabs
Floc1 like
Gel-like substance produced when coagulant, typically alum, combines with suspended alkaline particles in pool water and precipitates
Flocculate 1 like
Form masses; particles suspended in water aggregate into clumps that sink or can be removed by filtering
Flocculating Agent 1 like
Compound that accumulates finely suspended particles
Flocculent 2 likes
Have a fluffy or woolly appearance; woolly mass of solid precipitate produced in a liquid by a chemical reaction
Flock Finish 0 likes
Finish produced by spraying or sifting fibers of short wool, silk, and rayon fibers onto an adhesive surface
Flocked Carpet 1 like
One level velvety pile carpet made of short fibers entrenched on adhesive backing
Flocked Paper2 likes
flocked paper
Wallpaper coated and covered in flocking
Flocking 0 likes
Very small or powdered fiber producing a velvety design on a surface
Flococoating 0 likes
Finishing by applying finishing material on an article with a hose, the remainder draining into a tank
Flood 0 likes
A very large amount of water that has overflowed from a source such as a river or a broken pipe onto a previously dry area
Flood Coat 1 like
Top bitumen layer of a built-up roofing membrane typically aggregate surfaced; flood coat applied correctly is poured to a weight of 60 pounds per square for asphalt and to a weight of 75 pounds per square for coal-tar pitch
Flood Lamp1 like
flood lamp
A robust source of artificial light projecting a wide-ranging beam
Flood Level Rim 0 likes
See Flood Rim
Flood Rim 1 like
The highest point water can reach in a plumbing fixture with no overflow; also called Flood Level Rim
Flooded System 0 likes
Refrigeration system where liquid refrigerant permeates most of the evaporator
Flooded System, High-Side Float 0 likes
Refrigerating system which has a high-side float refrigerant control
Flooded System, Low-Side Float 1 like
Refrigerating system which has a low-side float refrigerant control
Floodlight1 like
A wide-ranging beam’s artificial lighting
Floodplain 0 likes
Level land that may be underwater in times of flood
Floor 0 likes
Flat horizontal part of a room on which people walk
Floor Box1 like
floor box
Electrical metal box fed by conduits under or in the floor, to make provisions for a floor outlet
Floor Brick 0 likes
Smooth solid brick employed for finished floor surfaces because it is resistant to abrasion
Floor Closer1 like
floor closer
A closing apparatus fitted in the floor beneath a door
Floor Contractor 0 likes
A floor contractor, otherwise known as a flooring contractor, is an individual or organization who installs, fixes and maintains floor surfaces in residences and commercial properties. Some specialize in materials such as vinyl and linoleum.  Others use laminate, hardwood, and other wood materials.
Floor Deck 0 likes
Sheet steel with fluted or ribbed qualities, spanning between supports usually joists or beams to reinforce the floor system and loads
Floor Drain1 like
floor drain
Drain in a floor attached to the plumbing system to take away undesirable water from an area
Opening in a concrete floor attached to a trap that receives seepage from indirect waste
Floor Finish 0 likes
Floor’s stain, polish, or wax
Floor Finishing 0 likes
Final sanding, color, and sealing of wooden flooring
Floor Grating 0 likes
Open grid of structural metal bars
Floor Hardener 1 like
Chemical solution applied to concrete floors to shield from wear
Floor Hinge 0 likes
A pivot hinge and closing apparatus in the floor or in the bottom of the door; only spring, or may be aided by liquid control
Floor Joist 0 likes
A support beam, typically parallel to other beams forming a structural floor system; floor sheathing can then be added and secured
Floor Level 0 likes
In any building, a floor’s elevation
Floor Masonry 0 likes
Molded masonry units like stone, ceramic brick, tile or concrete employed for finished flooring
Floor Mat2 likes
floor mat
Coarsely woven or plaited fabric made to cover a section of flooring
Floor Mat Frame 0 likes
Frame, generally metal, to accommodate a floor mat and anchor the mat to the floor
Floor Molding 0 likes
Trimming where the wall and floor meet
Floor Mounted Bench1 like
floor mounted bench
A work surface with floor-mounted support legs
Floor Mounted Transformer 0 likes
Transformer with its supports secured to the floor as a precaution against vibration and movement
Floor Mud 0 likes
Mortar without lime employed to float horizontal surfaces; also called Deck Mud
Floor Patch 0 likes
Material employed to fix floor damage
Floor Pedestal 0 likes
A component, like a short pier, employed as a floor system’s base
Floor Plate 0 likes
Metal plate featuring a non-skid design on one side to build industrial floors, platforms, stairs, and landings
Floor Price 0 likes
The lowest amount of money a knowledgeable seller would accept to sell or lease property
Floor Removal 0 likes
Demolishing and removing an old floor system
Floor Safe1 like
floor safe
Place or receptacle secured in a floor to store valuables
Floor Sink 1 like
A small sink, normally 12 inches by 12 inches, set in the floor to take in drainage
Floor Slab 1 like
Reinforced concrete section employed as flooring
Floor Tile, Clay1 like
floor tile, clay
See Clay FloorTile
Floor Varnish 0 likes
Varnish for floor application
Floor Wax1 like
floor wax
Substance applied onto flooring for sealing and protecting, and can be polished to create a shiny surface
Floor, Access 0 likes
See Access Floor
Floor, Gym 1 like
See Gym Floor
Floor, Industrial Wood 3 likes
See Industrial Wood Floor
Floor, Level 0 likes
See Level Floor
Floor, Terrazzo 0 likes
See Terrazzo Floor
Floor, Tile1 like
floor tile
See Tile Floor
Floorboard 0 likes
A flooring board
Flooring1 like
Material that creates a surface for floors such as carpeting, linoleum, wood, or sheet vinyl
Flooring, Marble 0 likes
See Marble Flooring
Flow 0 likes
Self-leveling measure
Flow After Suction 0 likes
Mortar flow measured after subjecting it to a vacuum created by a head of two inches of mercury
Flow Gradient 1 like
Drainage way slope defined by the elevation and distance of the inlet and outlet, then by volume and velocity
Flow Meter1 like
flow meter
Device employed for measuring volume of velocity of fluid motion
Flow of Mortar 0 likes
Measure of mortar consistency, sometimes called the Initial Flow, defined on the flow table in ASTM C 230; use of the flow table and calculation methods of the flow are described in Section 9 of ASTM C 109
Flowing Varnish 0 likes
Varnish designed to yield a smooth shiny surface without polishing or rubbing
Flue1 like
Large pipe or opening for smoke and combustion-related debris from a furnace, stove, water heater or fireplace; opening in a chimney where smoke escapes; normally double-walled, galvanized sheet metal pipe, however fireplace flue pipes are generally triple-walled
Flue Collar1 like
flue collar
Round metal ring fitting surrounding the heat flue pipe after the pipe passes out of the roof
Flue Damper 0 likes
An automatic door in the flue that shuts it off when the burner is turned off; designed to lessen heat loss up the flue from the warm furnace or boiler
Flue Liner 0 likes
Heat-resistant firebrick or fire clay materials that line a chimney
Flue Lining 0 likes
2-foot round or square lengths of fire clay or terra-cotta pipe made in flue sizes employed for the inner lining of chimneys with brick or masonry work on the exterior; Chimney flue linings span from one foot under the flue connection to the top of the chimney
Fluffing 0 likes
Lint and fuzz on newly installed carpet which stops once the carpet has been used; also called Shedding
Fluid 1 like
A liquid or gaseous substance whose particles move and change location without a mass separation
Fluid Adjusting Screw 0 likes
A spray gun’s screw that controls the increments of fluid entering the gun
Fluid Applied Elastomer 0 likes
Elastomeric material, fluid at ambient temperature, and dries or cures after application, creating a continuous membrane
Fluid Applied Roof 1 like
Roof covered with an asphalt-based liquid
Fluid Applied Roof Membrane 1 like
Roof membrane applied in one or more coats of a liquid that cures it, making it impervious
Fluid Flow 0 likes
Spray gun flow measurement with atomizing air turned off
Fluid Hose 0 likes
Specifically-designed hose for paint materials; commonly black
Fluid Nozzle1 like
fluid nozzle
Spray gun fluid tip having an opening; a needle and tip combination
Fluorescent Fixture1 like
fluorescent fixture
Lighting device that has a tubular electric lamp with a coating of fluorescent material on its inner surface, and has mercury vapor
Fluorescent Lamp Starter2 likes
fluorescent lamp starter
See Ballast
Fluorescent Lighting1 like
fluorescent lighting
A fluorescent lamp is a gas-filled glass tube with a phosphorous coating on the inside and two pins projecting from each end; when the gas is ionized by electricity, the phosphor coating glows
Fluorescent Paint1 like
fluorescent paint
Luminous paint that glows only when triggered by ultraviolet or black light
Fluorite 0 likes
Fluorspar, CaF2 employed as a source of fluorine for fluxing glasses and glazes
Flush 0 likes
Adjacent surfaces in the same plane, or even with each other
Removal of solid debris or fluids from refrigeration system parts by discharging them into the atmosphere with refrigerant or other fluids
Water closet or urinal valve control
Flush Bolt1 like
flush bolt
A door bolt when applied is flush with the face or edge of the door
Flush Bushing, Copper1 like
flush bushing copper
A threaded pipe fitting connecting two pipes with different diameters to create a continuous smooth copper surface
Flush Cabinet Construction 2 likes
A way of building cabinets where the door and drawer fronts are flush with the face frame
Flush Door1 like
flush door
A smooth door without protrusions
Flush Molding 0 likes
A piece of trim secured flat onto or flush with a wall, sometimes employed as a divider or chair rail
Flush Tank1 like
flush tank
A toilet’s water cistern or tank, providing flushing water
Flush Valve1 like
flush valve
Regulated water valve at a urinal or toilet that provides flushing water directly from a high pressure water pipe
Flushometer1 like
High pressure flush valve for a urinal or toilet
Fluted Column 0 likes
Column having vertical, ornamental, and semi-circular channeled shafts
Flux 0 likes
A substance encouraging fusion in a ceramic mixture
Magnetic field density
Chemical employed when brazing, soldering, or welding to stop the production oxides when heat is added
Fusible material employed in welding or oxygen cutting to dissolve and enhance removal of oxides or other unwanted substances
Fly Ash 0 likes
Extremely fine ash produced by burning pulverized coal; with more than 90 percent silica content, it can be employed as pozzolan in concrete, enhancing the concrete by adding cement paste volume
Fly Gallery 1 like
The space above a theater stage where props are suspended
Flying Formwork 0 likes
Large slab formwork sections transported with a crane
Product of the day

How to Fix Plumbing Noises In Your Home

plumbing fiberglass insulationTo diagnose loud plumbing, you must first determine whether the unwanted sounds occur on the system's inlet side - in other words, when water is turned on - or on the drain side. Noises on the inlet side have various causes: excessive water pressure, worn valve and faucet parts, poorly connected pumps or other appliances, incorrectly placed pipe fasteners, and plumbing runs with excessive tight bends or other restrictions. Noises on the drain side usually originate from poor location or, as with some inlet side noise, a layout with tight bends.


Hissing that occurs when a faucet is opened slightly generally signals excessive water pressure. Consult your local water company if you suspect this problem. They will tell you about the water pressure in your area and if necessary, can install a pressure reducing valve on the incoming water supply pipe.


Thudding, often accompanied by shuddering pipes when a faucet or appliance valve is turned off, is a condition called water hammer. The noise and vibration are caused by the reverberating wave of pressure in the water, which suddenly has no place to go. Sometimes opening a valve that discharges water quickly into a section of piping with a restriction, elbow, or tee fitting can produce the same condition. Water hammer can usually be fixed by installing fittings called air chambers or shock absorbers in the plumbing to which the problem valves or faucets are connected. These devices permit the shock wave produced by the halted flow of water to dissipate in the air, which unlike water, is compressible. Older plumbing systems may have short vertical sections of capped pipe behind walls on faucet runs for the same purpose; these can eventually fill with water, reducing or destroying their effectiveness. The solution is to drain the water system by turning off the main water supply valve and opening all faucets. Then open the main supply valve and close the faucets one at a time, starting with the faucet closest to the valve and ending with the one furthest away.

Chattering or Screeching

Intense chattering or screeching that occurs when a valve or faucet is turned on, and that usually disappears when the fitting is fully open, signals loose or defective internal parts. The solution is to replace the valve or faucet with a new one. Pumps and appliances such as washing machines and dishwashers can transfer motor noise to pipes if they are improperly connected. Link these items to plumbing with plastic or rubber hoses - never rigid pipe - to separate them.

Other Inlet Side Noises

Creaking, squeaking, scratching, snapping, and tapping are usually caused by the expansion or contraction of pipes, generally copper ones supplying hot water. The sounds occur as the pipes slide against loose fasteners or strike nearby house framing. You can often pinpoint the location of the problem if the pipes are exposed; just follow the sound when the pipes are making noise. Most likely, you will discover a loose pipe hanger or an area where pipes lie so close to floor joists or other framing pieces that they clatter against them. Attaching foam pipe insulation around the pipes at the point of contact should resolve the problem. Be sure straps and hangers are secure and provide sufficient support. Where possible, pipe fasteners should be connected to large structural elements such as foundation walls instead of framing; doing this reduces the transmission of vibrations from plumbing to surfaces that can amplify and transfer them. If attaching fasteners to framing is unavoidable, wrap pipes with insulation or other resilient material where they contact fasteners, and sandwich the ends of new fasteners between rubber washers when installing them. Correcting plumbing runs that suffer from flow-restricting tight or numerous bends is a last resort that should be performed only after consulting a skilled plumbing contractor. Unfortunately, this situation is common in older homes that may not have been built with indoor plumbing or that have been through several remodels, particularly by unprofessional contractors.

Drainpipe Noise

On the drain side of plumbing, the main goals are to eradicate surfaces that can be struck by falling or rushing water and to insulate pipes to contain unavoidable sounds. In new construction, bathtubs, shower stalls, toilets, and wall-mounted sinks and basins should be set on or against resilient under-layments to lower the transmission of sound through them. Water-saving toilets and faucets are less noisy than conventional models; install them instead of older types even if codes in your area still allow older fixtures. Drainpipes that do not run vertically to the basement or that branch into horizontal pipe runs supported at floor joists or other framing present especially troubling noise problems. These pipes are large enough to radiate substantial vibration; they also carry significant amounts of water, which makes the situation worse. In new construction, use cast-iron soil pipes (the large pipes that drain toilets) if you can afford them. Their immense size contains much of the noise made by water traversing them. Also, avoid routing drainpipes in walls shared with bedrooms and rooms where people gather. Walls containing drainpipes should be soundproofed as stated earlier, using double panels of sound-insulating fiberboard and wallboard. Pipes can be wrapped with special fiberglass insulation made for the purpose; these pipes have an impervious vinyl skin that sometimes containing lead. Results are not always acceptable.

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