Copy of `Rook Home Inspections LLC - Glossary of domestic engineering`
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Rook Home Inspections LLC - Glossary of domestic engineering
Category: Architecture and Buildings > Home inspection
Date & country: 16/01/2008, UK
Words: 1346
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Plumbing Trim Work performed by the plumbing contractor to get the home ready for a final plumbing inspection. Includes installing all toilets (water closets), hot water heaters, sinks, connecting all gas pipe to appliances, disposal, dishwasher, and all plumbing items.
Plumbing Waste Line Plastic pipe used to collect and drain sewage waste.
Ply A term to denote the number of thicknesses or layers of roofing felt, veneer in plywood, or layers in built-up materials, in any finished piece of such material.
Ply Sheet A layer in built-up roofing.
Plywood A piece of wood made of three or more layers of veneer joined with glue, and usually laid with the grain of adjoining plies at right angles. Almost always an odd number of plies are used to provide balanced construction.
Pocket (Channel) A three-sided, U-shaped opening in a sash or frame to receive glazing infill. Contrasted to a rabbet, which is a two-sided, L-shaped sections as with face glazed window sash.
Point Load A point where a bearing/structural weight is concentrated and transferred to the foundation.
Pointing The process where joints between masonry units, brick, etc., are filled with mortar.
Polished Wired Glass Wired glass that has been ground and polished on both surfaces.
Polymer A substance consisting of large molecules which have been formed from smaller molecules of similar make-up.
Polysulfide Sealant Polysulfide liquid polymer sealant which is mercaptan terminated, long chain aliphatic polymers containing disulfide linkages. They can be converted to rubbers at room temperature without shrinkage upon addition of a curing agent.
Polyurethane Sealant An organic compound formed by reaction of a glycol with an isocyanate.
Polyvinyl Chloride (PVC) Polymer formed by polymerization of vinyl chloride monomer. Sometimes called vinyl.
Ponding A condition where water stands on a roof for prolonged periods due to poor drainage and/or deflection of the deck.
Pop Rivets Fasteners used to join pieces of metal that are installed by either compressed-air-assisted or hand-operated guns. Unique in that they are installed from one side of the work.
Pop-Out See Stucco Pop-Out.
Pores Wood cells of comparatively large diameter that have open ends and are set one above the other to form continuous tubes. The openings of the vessels on the surface of a piece of wood are referred to as pores.
Porosity The density of substance and its capacity to pass liquids.
Portland Cement A mixture of certain minerals which when mixed with water form a gray colored paste and cure into a very hard mass.
Post A vertical member of wood, steel, concrete or other material that transfers weight from the top of the post to whatever the post is resting on.
Post & Beam Construction Most common type of wall framing, using posts which carry horizontal beams on which joists are supported. It allows for fewer bearing partitions and less material.
Post-and-Beam A basic building method that uses just a few hefty posts and beams to support an entire structure. Contrasts with stud framing.
Pot-Life The time interval following the addition of an accelerator before chemically curing material will become too viscous to apply satisfactorily. See Shelf Life.
Potable Water that is safe to drink.
Powder Coat A technique for applying paint to metal surfaces. The metal is covered with a powder of dry paint particles and is baked in an oven. This causes the powder to melt and harden into a tough, colorful finish.
Power The energy rate, usually measured in watts. Power equals voltage times amps, or W = E x 1. The heavier the flow of amps at a given supply, the higher the rate at which energy is being supplied and used.
Power Vent A vent that includes a fan to speed up air flow. Often installed on roofs.
Pre-Shimed Tape Sealant A sealant having a pre-formed shape containing solids or discrete particles that limit its deformation under compression.
Precast Concrete building components which are formed and cured at a factory and then transported to a work site for erection.
Premium Amount payable on a loan.
Preservative Any substance that, for a reasonable length of time, will prevent the action of wood-destroying fungi, borers of various kinds, and similar destructive agents when the wood has been properly coated or impregnated with it.
Pressure Tank Used in conjuction with wells to maintain pressure.
Pressure-Reducing Valve 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).
Pressure-Relief Valve Valve to relieve excess pressure in water storage tanks.
Pressure-Treated Lumber Lumber that is treated in such a way that the sealer is forced into the pores of the wood.
Primer A material of relatively thin consistency applied to a surface for the purpose of creating a more secure bonding surface and to form a barrier to prevent migration of components. The first coat of paint in a paint job that consists of two or more coats. Also, the paint used for such a first coat.
Priming Sealing of a porous surface so that compounds will not stain, lose elasticity, shrink excessively, etc. because of loss of oil or vehicle into the surround.
Principal The original amount of the loan, the capital.
Projection In roofing, any object or equipment which pierces the roof membrane.
Property Survey A survey to determine the boundaries of a property. The cost depends on the complexity of the survey.
Protection Board In roofing, heavy asphalt impregnated boards which are laid over bituminous coatings to protect against mechanical injury.
Pump Mix Special concrete that will be used in a concrete pump. Generally, the mix has smaller rock aggregate than regular mix.
Punch List A list of discrepancies that need to be corrected by the contractor.
Punch Out To inspect and make a discrepancy list.
Purlins A horizontal structural member spanning between beams or trusses to support a roof deck. In slope glazing, purlins are the horizontal framing members.
Push Stick In hardware, a tool used when cutting a short board on a table saw.
Putty A type of cement usually made of whiting and boiled linseed oil, beaten or kneaded to the consistency of dough, and used in sealing glass in sash, filling small holes and crevices in wood, and for similar purposes.
PVC or CPVC (PolyVinyl Choride) A type of white plastic pipe sometimes used for water supply lines.
PVD (Physical Vapor Deposition) A very durable titanium or zirconium coating that resists tarnish, scratches, and corrosion. It is used mostly to protect faucets with a brass finish.
PVDF Architectural coating. See Kynar Coating.
Quarter Round A small molding that has the cross section of a quarter circle.
Quartersawn Grain Another term for edge grain.
Quick-Setting Cement An asphalt-based cement used to adhere tabs of strip shingles to the course below. Also used to adhere roll roofing laps applied by the concealed nail method.
Quote or Quotation A price provided by a contractor, sub-contractor, or vendor to funish materials, labor and/or both. Quotes differ from estimates in that an estimate is a best guess of the cost involved.
Rabbet A rectangular, longitudinal groove cut in the corner edge of a board or plank.
Radial Saw A circular saw which hangs from a horizontal arm or beam and slides back and forth. The arm pivots from side to side to allow for angle cuts and bevels. When sawing finish plywood, the good side should face up as the saw cuts on the down stroke.
Radiant Heating A method of heating, usually consisting of a forced hot water system with pipes placed in the floor, wall, or ceiling, or with electrically heated panels.
Radiation Any heated surface loses heat to cooler surrounding space or surfaces through radiation. The earth receives its heat from the sun by radiation. The heat rays are turned into heat as they strike an object which will absorb some or all of the heat transmitted.
Radiator A heating unit which is supplied heat through a hot water system.
Radon A naturally-occurring, radioactive gas which is heavier than air and is common in many parts of the country. Radon gas exposure is associated with lung cancer. Mitigation measures may involve crawl space and basement venting and various forms of vapor barriers.
Radon System A ventilation system beneath the floor of a basement and/or structural wood floor and designed to fan exhaust radon gas to the outside of the home.
Rafter A sloping roof member that supports the roof covering which extends from the ridge or the hip of the roof to the eaves. A common rafter is one which runs square with the plate and extends to the ridge. A hip rafter extends from the outside angle of the plate towards the apex of the roof. They are 2' deeper or wider than common rafters. A valley ra …
Rafter Tail The portion of a rafter that extends past the building to form the eaves.
Rafter, Hip A rafter that forms the intersection of an external roof angle.
Rafter, Valley A rafter that forms the intersection of an internal roof angle. The valley rafter is normally made of double 2-inch-thick members.
Raggle Block A specially designed masonry block having a slot or opening into which the top edge of the roof flashing is inserted and anchored.
Rail Cross members of panel doors or of a sash. Also the upper and lower members of a balustrade or staircase extending from one vertical support, such as a post, to another.
Railroad Tie Black, tar and preservative impregnated, 6'x8' and 6'-8' long wooden timber that was used to hold railroad track in place. Normally used as a member of a retaining wall.
Rake Trim members that run parallel to the roof slope and form the finish between the wall and a gable roof extension. The angle of slope of a roof rafter, or the inclined portion of a cornice.
Rake Edge The overhang of an inclined roof plane beyond the vertical wall below it.
Rake Fascia The vertical face of the sloping end of a roof eave.
Rake Siding The practice of installing lap siding diagonally.
Ranch A single story, one level home.
Random-Tab Shingles Shingles on which tabs vary in size and exposure.
Rankin Thermometer scale on which unit of measurement equals the Fahrenheit degree.
Raw Linseed Oil The crude product processed from flaxseed and usually without much subsequent treatment.
Ready Mixed Concrete Concrete mixed at a plant or in trucks en route to a job and delivered ready for placement.
Rebar Reinforcing bar used to increase the tensile strength of concrete.
Receptacle An electrical outlet. A typical household will have many 120 volt receptacles for plugging in lams and appliances and 240 volt receptacles for the range, clothes dryer, air conditioners, etc.
Recording Fee A charge for recording the transfer of a property, paid to a city, county, or other appropriate branch of government.
Redline, Red Lined Prints Blueprints that reflect changes and that are marked with red pencil.
Reducer See bushing.
Reflective Glass Glass with a metallic coating to reduce solar heat gain.
Reflective Insulation Sheet material with one or both sun faces of comparatively low heat emissivity, such as aluminum foil. When used in building construction the surfaces face air spaces, reducing the radiation across the air space.
Refrigerant A substance that remains a gas at low temperatures and pressure and can be used to transfer heat. Freon is an example and is used in air conditioning systems.
Register A fixture through which conditioned air flows. In a gravity heating system, it is located near the baseboard. In an air conditioning system, it is located close to the thermostat.
Reglaze To replace a broken window.
Reglet A horizontal slot, formed or cut in a parapet or other masonry wall, into which the top edge of counter-flashing can be inserted and anchored. In glazing, a reglet is typically a pocket or keyway extruded into the framing for installing the glazing gaskets.
Reinforced Concrete A combination of steel and concrete using the best properties of each. The steel consists of rebar or reinforcing bars varying from 3/8 ' to 2 1/4 ' in diameter and is placed before concrete is poured.
Reinforced Masonry Masonry units, reinforcing steel, grout and/or mortar combined to act together to strengthen the masonry structure.
Reinforcing Steel rods or metal fabric placed in concrete slabs, beams, or columns to increase their strength.
Relative Heat Gain The amount of heat gain through a glass product taking into consideration the effects of solar heat gain (shading coefficient) and conductive heat gain (U-value).
Relative Humidity The amount of water vapor in the atmosphere, expressed as a percentage of the maximum quantity that could be present at a given temperature. (The actual amount of water vapor that can be held in space increases with the temperature.)
Release Tape A plastic or paper strip that is applied to the back of self-sealing shingles. This strip prevents the shingles from sticking together in the bundles, and need not be removed for application.
Remote Remote electrical, gas, or water meter digital readouts that are installed near the front of the home in order for utility companies to easily read the home owners usage of the service.
Resilient Flooring A durable floor cover that has the ability to resume its original shape.
Resistance The internal structure of wires even in the best conductors opposes the flow of electric current and converts some current into heat. This internal friction-like effect is called resistance and is measured in ohms. Resistance equals Voltage divided by Amperage.
Resorcinol Glue A glue that is high in both wet and dry strength and resistant to high temperatures. It is used for gluing lumber or assembly joints that must withstand severe service conditions.
Retaining Wall A structure that holds back a slope and prevents erosion.
Retentions Amounts withheld from progress billings until final and satisfactory project completion.
