Glossary

Skip ~ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Here you can find common terms used in the flooring industry and this site as a helpful guide.

A

  • Abrasion ~ Is the process of scuffing, scratching, wearing down, marring, or rubbing away. It can be intentionally imposed in a controlled process using an abrasive. Abrasion can be an undesirable effect of exposure to normal use or exposure to the elements. It can develop in any wood based floor by excessive movement.
  • Absorption ~ In the context of wood based flooring, a process of water being absorbed into the wood. A lot like a sponge.
  • Acclimation or Acclimatization ~ The act of allowing wood moisture content to become at equilibrium with the environment in which it will perform. (See EMC, Equilibrium Moisture Content).
  • Acid ~ Acid Chemical substance rated below 7 on the PH scale.
  • AC rating ~ A common term used to indicate the durability level of laminate flooring. AC ratings are applied to every line of laminate floors by an independent body known as European Producers of Laminate Flooring (EPLF). These ratings are a brief code of a laminate’s resistance to stress and help buyers understand the difference in durability among laminate flooring products. As a brief outline AC rating are numbers raising incrementally from 1 to 5. AC1 (21) being to indicate a laminate flooring suitable for low to moderate use, AC2 (22) residential general use, AC3 (23) residential heavy use, AC3 (31) Commercial low use, AC4 commercial general use and AC5 (33) commercial heavy use.
  • Adhesion ~ Is the tendency of dissimilar particles or surfaces to cling to one another. To adhere wood to a sub-floor would be a well known term. With an alternative term to adhere being to glue. Adhesion being the process of the wood flooring grabbing. See also Bond.
  • Adhesive ~ Adhesive, also known as glue, is a material, typically liquid or semi-liquid, that adheres or bonds objects together.
  • Air-Dried ~ Dried by exposure to air in a yard or shed without artificial heat. (Not kiln dried).
  • Air Humidity ~ The amount of water vapour stored in the atmosphere. Classically measured on a scale of percentage. 0% being the driest and 100% being the wettest, commonly referred to as the saturation point.
  • Air Pressure ~ Is the force per unit area exerted on a surface by the weight of air above that surface in the atmosphere.
  • Alkalinity ~ A measurement of an alkaline rating about 7 on the PH scale.
  • Annual Growth Ring ~ The layer of wood growth formed on a tree during a single growing season.
  • Asphalt ~ Also known as bitumen. A matt or shiny material that turns to a dense liquid when heated and when cool sets hard. A very good waterproofing/barrier material often used in road construction. Has been worked to incorporate the material in domestic properties. A great sub-floor for overlay flooring products but not an ideal material to glue to for direct bond installations.

B ~ Top

  • Bevelled Edge ~ The chamfered or bevelled edge of solid wood, engineered, laminate, plank, block and parquet. Can also refer to any chamfered edge on any material.
  • Bond ~ The permanent or semi permanent joining of two surfaces i.e. The bond between a wood floor and a sub-floor using an adhesive to bond the two. For the opposite see de-bond.
  • Border ~ Simple or intricate designs which frame and customize a flooring installation.
  • Bound water ~ A term used to describe water Water held in the cell walls of wood.
  • Bow ~ Or bowed. The distortion of lumber in which there is a deviation, in a direction perpendicular to the flat face, from a straight line from end to end of the piece. In a practical sense regarding a wood based floor, the plank when placed singularly on a flat surface may rock or move when pressed on one side of the long or short length. The direction of the bow can be determined by placing a plank on each side to assess.
  • Buckle ~ Or buckled. In the context of wood based flooring, buckling is characterized by a sudden failure of the structural integrity of a floor due to compressive forces. Such forces can be exerted both in length and width of a floor and if the compressive forces exceed that of the floor or adhesive tolerance buckling may present itself as the floor lifting.
  • Burl ~ A swirl or twist of the grain of the wood that usually occurs near a knot, but doesn’t contain a knot, commonly found in the stump of a tree and where limbs branch out from the tree.

C ~ Top

  • Chatter Marks ~ Slight, closely spaced indentations causing a ripple effect on the surface of a wood based floor.
  • Cleat ~ A barbed fastener commonly used as a mechanical device to fasten hardwood flooring. Can be referred to as a cleat nail.
  • Compression Set ~ Caused when wood strips or parquet slats absorb excess moisture and expand so much that the cells along the edges of adjoining pieces in the floor are crushed. This causes them to lose resilience and creates cracks when the floor returns to it’s normal moisture content.
  • Coniferous ~ Very basically, coniferous refers to cone bearing woody plants or trees. The wood they produce is a softwood. This species accounts for a huge percentage of the worlds plant and woodland ecosystem. You would have heard of some typically common examples as firs, cedars, douglas-firs, redwoods and pines.
  • Contraction ~ There are many descriptions used for contraction but in the context of a wood based floor covering, contraction is the process of the wood contracting or shrinking as it gains an equilibrium with it’s environment. Generally when there is a drop in air humidity. For the opposite see expansion.
  • Crazing ~ The appearance of very fine cracks on the surface of a dried finish film.
  • Crook The distortion of a board in which there is a deviation, in a direction perpendicular to the edge, from a straight line from end to end of the piece. To give a visual example, this is similar to a bow but when a board is placed flat, the bow is clear from looking down the length of the board but the board will not rock.
  • Cross laying ~ Laying of material perpendicular to the material below it.
  • Crowning ~ A convex or crowned condition or appearance of individual strips with the center of the strip higher than the edges. The opposite of cupping.
  • Cupping ~ A concave or dished appearance of individual strips with the edges raised above the center. The opposite of crowning.
  • Curing ~ A term generally applied to the time a floor coating or adhesive takes to completely dry. Curing times can vary depending on atmospheric conditions, amount and type of material used.

D ~ Top

  • Damp ~ The presence of moisture. The term is generally used when an object or atmosphere has a moisture content above the expected average.
  • De-bond or de-bonding ~ The separation of two materials from once being bonded by an adhesive. Classically in the context of wood based flooring would refer to the failure of the adhesive due to outside forces or the physical removal of the two surfaces using manual force.
  • Deciduous ~ Is a term used to describe the dropping of a part that is no longer needed i.e. Seasonal leaf lose of a tree or snake skin.
  • Delamination ~ The separation of layers in an engineered wood or laminate floor, through failure within the adhesive or between structural layers. Also between layers of stain and/or coating.
  • Detergent ~ Cleaning solutions that consist of water and one or more of the following ingredients: Surfactants, builders, solvents, chelating agents and soap.
  • Dew ~ Dew is water in the form of droplets that appears on exposed objects in the morning or evening. As the exposed surface cools by radiating its heat, atmospheric moisture condenses at a rate greater than that at which it can evaporate, resulting in the formation of water droplets.
  • Dew point ~ The dew point is the temperature below which the water vapor in a volume of humid air at a constant barometric pressure will condense into liquid water at the same rate at which it evaporates.
  • Diffuse-Porous Woods ~ Certain hardwoods in which the pores tend to be uniform in size and distribution throughout each annual ring or to decrease in size slightly and gradually toward the outer border of the annual growth ring. Hard maple is an example.
  • Digital Printing ~ Digital printing is a process in which the decor image is transferred directly from a computer to a printing machine. It is mainly used for creative decors. In the context of flooring, this is what give a laminate floor it’s cosmetic appearance.
  • Dimensional Stability ~ The ability to maintain the original intended dimensions when influenced by a foreign substance. Wood is hygroscopic (readily takes up moisture) and isn’t dimensionally stable with changes in moisture content below the fibre saturation point. Engineered wood flooring, however, is more dimensionally stable than solid wood.
  • Dirt Retention ~ A finish has high dirt retention when soil from foot traffic becomes embedded into the finish easily and quickly.
  • Distressed ~ A heavy artificial texture in which the floor has been scraped, scratched or gouged to give it a time-worn antique look. A natural distressed appearance can occur over time or due to natural outside forces.
  • Door bar ~ A term used to describe a product used to cover the separation of a floor at a doorway. See also Door threshold plate.
  • Door threshold plate ~ A manufactured decorative product used to cover an expansion gap or otherwise known as a separation between two adjoining room.
  • Durability ~ The ability of the wood species or finish to withstand the conditions or destructive agents with which it comes into contact with. Without an appreciable change in appearance or other important properties.
  • DPC or Damp proof course ~ A protective barrier against moisture. In construction, this is commonly seen at a low level in foundation walls. A DPC is designed to prevent the bridging of rising damp. Common materials used are hot bitumen, plastic sheets, bituminous felts, polystyrene. See also DPM/Damp proof membrane.
  • DPL ~ Abbreviation for Direct Pressure Laminate. This is a process in which the decorative layer and stabilising layer are pressed onto the core. A common method used in the main body laminate manufacture.
  • DPM or Damp proof membrane ~ A protective barrier against moisture. In construction, this is commonly seen at a low level in foundation walls. A DPC is designed to prevent the bridging of rising damp. Common materials used are hot bitumen, plastic sheets, bituminous felts, polystyrene. See also DPC/Damp proof membrane.

E ~ Top

  • End Joint ~ The place where two pieces of flooring are joined together end to end.
  • End Lifting ~ A swelling of the top layer of engineered or laminate wood flooring, occurring at an end joint.
  • End-Matched ~ In tongue-and-groove strip and plank flooring, the individual pieces have a tongue milled on one end and a groove milled on the opposite end, so that when the individual strips or planks are butted together, the tongue of one piece fits into the groove of the next piece.
  • Engineered ~ An assembly made by bonding layers of veneer or lumber with an adhesive so that the most adjacent layers have their grains going in perpendicular directions to increase dimensional stability.
  • EPLF ~ An Abbreviation of European Producers of Laminate Flooring. See European Producers of Laminate Flooring.
  • Equilibrium Moisture Content (EMC) ~ The moisture content at which wood neither gains nor loses moisture when surrounded by air at a given relative humidity and temperature. This is a dynamic process. To describe it in a laymen and relevant term, the EMC of wood changes and stabilises with it’s surrounding environment. A floor that has been installed in say an environment with a high air humidity and temperature will eventually acclimatise to that environment. Any sudden changes and the floor will become unstable.
  • European Producers of Laminate Flooring ~ Established in 1994, the EPLF is an organization which represents the leading producers of laminate flooring in Europe and their suppliers. They are a widely recognised body that imposes standards on the laminate flooring industry in Europe. They focus mainly on manufacturers and current have 20 members. These include well known names in the UK as Quick-Step, Pergo and Balterio.
  • Expansion ~ There are many descriptions that can be used for expansion but in the context of a wood based floor covering, expansion is the process of the wood swelling as it gains an equilibrium with it’s environment. Generally when there is a raise in air humidity. For the opposite see contraction.

F ~ Top

  • Fading ~ The loss of colour due to exposure to light, heat or other destructive agents.
  • Failure or failed ~ A broad term used when a wood based floor behaves outside the expected boundaries of it’s performance.
  • Fibreboard ~ A broad generic term inclusive of sheet materials of widely varying densities manufactured of refined or partially refined wood or other vegetable fibres. Bonding agents and other materials may be added to increase strength, resistance to moisture, fire or decay, or to improve some other property. Often used as an underlay for wood based flooring. With exceptional levelling properties on jagged uneven surfaces.
  • Fibre board underlay ~ A fibre based sheet product manufactured to be use with wood based floor covering. Excellent jagged surface levelling properties.
  • Fibre Saturation Point ~ The stage in drying or wetting wood at which the cell walls are saturated with water and the cell cavities are free from water. It’s usually taken as approximately 30 percent moisture content, based on over-dry weight.
  • Figure ~ Inherent markings, designs or configurations on the surface of the wood produced by the annual growth rings, rays, knots and deviations from regular grain.
  • Filler~ In woodworking, any substance used to fill the holes and irregularities in planed or sanded surfaces to decrease the porosity of the surface before applying finish coatings. Wood filler used for cracks, knotholes and worm holes is often a commercial putty, plastic wood or other material mixed to the consistency of putty. A wood filler also may be mixed on the job using sanding dust from the final sanding, or other suitable material, mixed with a product appropriate for this use. Some fillers may be specially formulated to allow expansion of wood based floors for the purpose of using it for applying into an exposed expansion gap.
  • Fillets ~ The small components that comprise finger-block parquet. Also called fingers or slats. Fillet may also refer to the top layer of some engineered wood flooring.
  • Fire Resistance ~ The property of a material or assembly to withstand fire or given protection from it. Certain species naturally provide greater fire resistance than others. Classes are I-II-III or A-BC with Class I or A being the most fire resistant.
  • Fire Retardant~ A chemical or preparation of chemicals used to reduce flammability or to retard the spread of a fire over a surface.
  • Flecks ~ The wide irregular, conspicuous figure in quarter sawn oak flooring. See Medullary Rays.
  • Floating floor ~ A floor that does not need to be nailed or glued to the sub-floor. Typically, the flooring panels are connected together by adhesive, glue free click system or mechanical connectors. A floor such as this can often be installed on top of an underlay.
  • Flow ~ The characteristic of a coating that allows it to level or spread into a smooth film of uniform thickness before hardening.
  • Free water ~ A term used to describe water that is held in the cell cavities of wood.

G ~ Top

  • Gap or gapping ~ The resulting cosmetic appearance or process of de-bonding. An unsightly gap caused by failure of the bonding adhesive. Gapping can also be a natural occurrence due to expansion or contraction but if the gap exceeds approximately 5 mm, this is generally considered an indication of failure.
  • Grain ~ The term grain refers to the alternating regions of relatively darker and lighter wood resulting from the differing growth parameters occurring in different seasons. The direction of the grain being from top to root of a tree. We are said to be going across or against the grain from left to right of a tree.
  • Graininess ~ The objectionable appearance of small, grain-like particles in a finishing material or in the dried film thereof.

H ~ Top

  • Hardness ~ The property of the wood species or dried film of finishing material that causes it to withstand denting or being marked when pressure is exerted on its surface by an outside object or force.
  • Hardwood ~ Generally, one of the botanical groups of deciduous trees that have broad leaves, in contrast to the conifers or softwoods. The term has no reference to the actual hardness of the wood.
  • HDF or High Density Fibreboard ~ Is a type of fibreboard, which is an engineered wood product. It is similar to particle board and medium-density fibreboard, but is denser and much stronger and harder because it is made out of exploded wood fibres that have been highly compressed.
  • Heartwood ~ The wood extending from the pith to the sapwood, the cells of which no longer participate in the life processes of a tree. It is usually darker than sapwood. See Pith and Sapwood.
  • Heavy Streaks ~ Spots and streaks of sufficient size and density to severely mar the appearance of wood.
  • Honeycombing ~ Checks often not visible at the surface that occur in the interior of a piece of wood, usually along the wood rays.
  • HPL ~ Abbreviation for High Pressure Laminate. This is a process in which the decorative paper and overlay are first pressed with special kraft papers. It is only in the second step that this so-called high pressure laminate is glued to the core. This process id generally associated with high quality production and products.
  • Humidity ~ The amount of water vapour in the air. See also Relative Humidity or Air-Humidity.
  • Hygrometer ~ An instrument for measuring the degree of humidity or relative humidity of the atmosphere.
  • Hygroscopic ~ A substance that can absorb and retain moisture, or lose or throw off moisture. Wood and wood products are hygroscopic. They expand with absorption of moisture and their dimensions become smaller when moisture is lost or thrown off.

I ~ Top

  • Ingress ~ A term commonly used in the industry. often in conjunction with water, ‘water ingress’, refers to a pooled or stagnant location of water that has seeped into a join. See also water ingress.
  • Installation ~ In context, the installation of a wood based floor covering.

J ~ Top

  • Join or joint ~ The point at which two wood planks meet.
  • Jointed Flooring ~ Strip flooring, generally birch, beech, hard maple or pecan, manufactured with square edges, not side-matched, but usually end-matched. It is used principally for factory floors where the square edges make replacement of strips easier.
  • Joist ~ One of a series of parallel beams used to support floor or ceiling loads and supported in turn by larger beams, girders or bearing walls.

K ~ Top

  • Kiln~ A chamber having controlled air flow, temperature and relative humidity for drying lumber, veneer and other wood products.
  • Kiln-Dried ~ Dried in a kiln with the use of artificial heat. Primarily used for stabilising the wood structure to increase hardeness and decrease movement through atmospheric changes.
  • Knot ~ The portion of a branch or limb that has been surrounded by subsequent growth of the stem. The shape of the knot as it appears on a cut surface depends on the angle of the cut relative to the long axis of the knot. In hardwood strip flooring, small and pin knots aren’t more than one-half inch in diameter. A sound knot is a knot cut approximately parallel to its long axis so that the exposed section is definitely elongated.

L ~ Top

  • Lignin ~ The main non-carbohydrate constituent of wood. Lignin is a “polymer” that functions as a natural binder and support for the cellulose fibres of wood.
  • Lipping or lipped ~ Is the raised of pronounced edge of a plank where it meets another. See Over wood/Underwood.

M ~ Top

  • Manufacturing Defects ~ Includes all defects or blemishes that are produced in manufacturing, such as chipped grain, torn grain, skips in dressing, hit-and-miss (a series of surfaced areas with skips between them), variation in machining, machine burn, and mismatching. Generally associated with poor quality control and sub-standard or poorly maintained machinery. Although a common part of any large scale manufacturing process.
  • MDF or Medium Density Fibreboard ~ An engineered wood product formed by breaking down hardwood or softwood residuals into wood fibres, often in a defibrator, combining it with wax and a resin binder, and forming panels by applying high temperature and pressure.
  • Medullary Rays ~ Strips of cells extending radially within a tree and varying in height from a few cells in some species to four or more inches in oak. The rays serve primarily to store food and transport it horizontally in the tree. On quartersawn oak, the rays form a conspicuous figure sometimes referred to as flecks. See Flecks.
  • Mineral Streak ~ Wood containing an accumulations of mineral matter introduced by sap flow, causing an unnatural colour ranging from greenish brown to black.
  • Mixed Media ~ A wood floor that is predominately of wood, but also incorporates other materials, such as slate, stone, ceramic, marble or metal.
  • Moisture Content ~ The amount of moisture in wood expressed as a percentage of the weight of oven-dried wood. Specific to the wood and the manufacturing process.
  • Movement ~ A term commonly referred to when a wood based floor has expanded or contracted. In some cases movement can occur due to vibration or friction. This generally only applies to floating floors.
  • Muratic Acid ~ A diluted acid used to neutralize alkalinity of concrete sub-floors.

N ~ Top

  • Nailing Shoe (or Nailing Plate) ~ An attachment to a blind-nailing machine that broadens the impact area. Often required for fastening factory-finished flooring.
  • Non-Porous ~ In the context of flooring, we use the term non-porous to describe a surface that does not allow moisture to soak into it. For the opposite see porous.
  • Nosing ~ A hardwood or MDF moulding used to cover the outside corner of a step, milled to meet the hardwood, engineered or laminate floor in the horizontal plane, to meet the riser in the vertical plane. It is usually used on landings.

O ~ Top

  • Overlay ~ In the context of a wood based floor covering, overlay is a term used to describe a floor that has been fitted on top of a sub-floor. Sometimes fixed, most of the time fitted on top of an underlay.
  • Overwood/Underwood ~ A flooring condition in which there is a perceived misalignment of the flooring surface, with some wood pieces raised above adjacent pieces leaving a slightly uneven surface. See also lippage/lipping.

P ~ Top

  • Parquet ~ A patterned floor.
  • Particleboard ~ A generic term for a material manufactured from wood particles using a synthetic resin or other suitable binders.
  • Photo-sensitive ~ The property of some wood species which causes them to lighten or darken when exposed to light.
  • Plain Sawn ~ The annual growth rings make an angle of less than 45° with the surface of the piece. This exposes the pores of the spring wood and dense summer wood of the annual growth ring in ring-porous woods to produce a pronounced grain pattern.
  • Planer Bite ~ A deeper than intended groove cut into the surface of a piece of wood by a planer blade.
  • Plank ~ Solid, engineered or laminate boards 3″ and wider designed to be installed in parallel rows.
  • Plank replacement ~ A process of removing a single plank that has become damaged and replace it with an undamaged plank. Generally carried out in-situ without lifting an entire floor.
  • Ply Board~ A panel made of cross-directional veneers and/or layers of wood for dimensional stability.
  • Plugs ~ Used to cover countersunk screws when installing wood flooring or for decorative purposes in wood flooring.
  • Porous ~ In the context of flooring, we use the term porous to describe a surface that is not sealed, therefore allows moisture to soak into the surface. For the opposite see non-porous.
  • Pre-finished ~ Factory-finished flooring that only requires installation.

Q ~ Top

  • Quarter sawn ~ The annual growth rings of wood form an angle of 45° to 90° with the surface of the
    piece. In quarter sawn strips, the medullary rays or pith rays in ring-porous woods are exposed as
    flecks that are reflective and produce a distinctive grain pattern.
  • Quiet ~ Something you should enjoy after your new wood floor has been installed.

R ~ Top

  • Raised Grain ~ A roughened or fuzzy condition of the face of the flooring in which the dense
    summer wood is raised above the softer spring wood but not torn or separated.
  • Rays, Wood ~ See Medullary Rays.
  • Reducer Strip ~ A ramp shaped moulding accessory for wood based flooring, normally used at doorways, but sometimes at fireplaces and as a room divider. It is grooved on one edge and tapered or feathered on the other edge. Can often be referred to as a ramp section, ramp profile or simply a reducer.
  • Registered Embossing ~ This is the process and description of a particular surface given to a laminate floor. It is a finish given to the floor where raised texture follows the design of the picture grain of a laminate floor. Commonly associated with higher quality brands although increasing good manufacturing methods are seeing this process included in lower end products.
  • Relative Humidity ~ Ratio of the amount of water vapour present in the air to that which the air would hold at saturation at the same temperature. It is usually considered on the basis of the weight of the vapour, but for accuracy should be considered on the basis of vapour pressures.
  • Rift sawn ~ Timber in which the annual rings make angles of 30° to 60° with the surface of the piece. Also known as bastard sawn.
  • Ring-Porous Woods ~ A group of hardwoods in which the pores are comparatively large at the beginning of each annual growth ring and decrease in size, more or less abruptly, toward the outer portion of the annual growth ring. The large pores are spring wood and the smaller pores are summer wood.

S ~ Top

  • Sapwood ~ The wood near the outside of a tree. It is usually lighter in colour than heartwood.
  • Sawn ~ See Plain Sawn, Quartersawn and Rift Sawn.
  • Screed ~ A thin, top layer of material (traditionally sand and cement), poured in situ on top of the structural concrete or insulation, on top of which other finishing materials can be applied.
  • Self levelling compound ~ A compound specially formulated to provide a stable top surface that is poured on to a prepared sub-floor. Self levelling refers to the ability of the mixture to self level on application creating an even surface for floor coverings of all kinds to be applied.
  • Shake ~ A separation along the grain, the greater part of which occurs between the annual growth rings.
  • Sheathing ~ The structural covering, usually sheets of plywood, placed over exterior studding, or rafters or sub-floor of a structure.
  • Side-Matched ~ In tongue-and-groove strip and plank flooring, the individual pieces have a tongue milled on one side and a groove milled on the opposite side, so that when the individual strips or planks are placed side by side, the tongue of one piece fits into the groove of the next piece. See End-Matched and Tongue-and Groove.
  • Slip-Tongue/Spline ~ A small strip of wood or metal used to reverse or change direction in installing standard tongue-and-groove strip flooring.
  • Softwoods ~ General term used to describe lumber produced from needle and/or cone-bearing trees (conifers).
  • Split ~ Separations of wood fibre running parallel to the grain.
  • Square Edge ~ Flooring that abuts without a broken plane.
  • Strip Flooring ~ Solid or engineered boards, less than 3 inches in width, to be installed in parallel rows, produced in various thicknesses and widths. The strips are side-matched and end-matched (tongue-and-grooved). They are for nail-down installation directly to wood or plywood sub-floors, or over wood screeds on concrete slab construction. Some types can also be glued directly to a concrete sub-floor.
  • Sub-floor ~ The sub-floor is the structure that is underneath a floor covering. In laymen term the sub-floor is the floor under the floor.
  • Surface ~ The outside or exterior boundary of any substance. One is said to surface the work when it is rubbed or sanded to a smooth, level plane.
  • Swelling or swelled ~ This is a term used when wood has absorbed moisture. It is the action of what happens to the wood.

T ~ Top

  • Taber Test ~ A test that is used to define the abrasion resistance of a laminate floor. This is one of the test used to aid the categorisation of a laminate and award it an AC rating.  The process involves rotating a test object under two abrading wheels fitted with sandpaper. The speed of rotation, type and replacement of the sandpaper are specified. The number of turns up to a particular point, the IP (= initial point) determines the rate of abrasion.
  • Tongue-and-Groove ~ In strip, plank and parquet flooring, a tongue is milled on one edge and a groove cut on the opposite edge. As the flooring is installed, the tongue of each strip or unit is engaged with the groove of the adjacent strip or unit. See End-Matched and Side-Matched.
  • Trim ~ The finish materials in a building at the floor of rooms, (baseboard, skirting board, quarter round, scotia for example).
  • Trowel ~ A tools used to apply material such as adhesive. Also an action as in to trowel on a material.
  • Truss ~ Engineered or solid floor joist system.

U ~ Top

  • Uneven ~ A surface that has a deviation of more that 2 mm over a 1 meter span in all directions.
  • Unfinished ~ A product that must have stain and/or a finish applied after installation.

V ~ Top

  • Vapour Impermeable Membrane ~ A material or covering that prevents the passage of moisture.
  • Vapour Permeable Membrane ~ A material or covering that allows the passage of moisture.
  • Vapour Retarder ~ A vapour-resistant material, membrane or covering such as foil, plastic sheeting that limits the amount of moisture vapour that passes through to a material, or floor.
  • VOC ~ Volatile Organic Compounds. This is a measure of the non-water solvents that are in a particular product.

W ~ Top

  • Warping ~ Any distortion of a piece of flooring from its true plane that may occur in seasoning or through an outside force such as an excessive increase in humidity.
  • Water ingress ~ A process of water seeping into a floor join or settling between layer and soaking into the fibres of wood. See Ingress.
  • WBP Plyboard ~ WBP stands for Water and Boil Proof. This is a kin to marine ply and is often a preferred material to use for it’s fluctuating atmospheric resistance properties.
  • Wedge ~ A taped piece of timber. Can also refer to plastic wedges to aid the installation of a wood based floor covering.