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fabricated used in reference to dimension stone, it means manufactured and ready for installation.
  
facethis refers to the exposed portion of stone. the word “face” can also be used when referring to the edge treatment on various cutting stock materials.
  
facial defectthat portion of the facial surface of the tile which is readily observed to be nonconforming and which will detract from the aesthetic appearance or serviceability of the installed tile.
  
faience mosaicsfaience the that are less than 6 in .z in facial area, usually 5/16 to 3/8 in. (8 to 9.5 mm) thick, and usually mounted to facilitate installation. 
  
faience tileglazed or unglazed tile, generally made by the plastic process, showing characteristic variations in the face, edges, and glaze that give a handcrafted, nonmechanical, decorative effect. 
  
faience wareformerly a decorated earthenware with an opaque glaze, but currently designating a decorated earthenware having a transparent glaze 
  
fan or fanningspacing tile joints to widen certain areas so they will conform to a section that is not parallel.
  
fasciaa horizontal belt or vertical face; often used in combination with moldings.
  
feather edgea wood or metal tool having a beveled edge; used to straighten re-entrant angles in finish plaster coat; also edge of a concrete or mortar placement such as a patch or topping that is beveled at an acute angle.
  
featheredging filethe method of chipping away the body from beneath a facial edge of a tile in order to form a miter.
  
feature strip a narrow strip of tile that has a contrasting color, texture, or design.
  
feldspara mineral aggregate consisting chiefly of microcline, albite and/or anorthite.
  
ferruginouslimestone or sandstone containing a high proportion of iron oxide.
  
fiberglassthe name for products made of or with glass fibers ranging from 5 to 600 hundred-thousandths inch in diameter. used for making textile fabrics, and for heat or sound insulation.
  
field stoneloose blocks separated from ledges by natural process and scattered through or upon the regolith (“soil”) cover; applied also to similar transported materials, such as glacial boulders and cobbles.
  
field tilean area of tile covering a wall or floor. the field is bordered by tile trim.
  
fifty-fiftysee spacing mix. filler. see spacing mix. fineness modulus. a factor obtained by adding the total percentages by weight of an aggregate sample retained on each of a specified series of sieves, and dividing the sum by 100. in the united states the standard sieve sizes are no. 100 (150 pm), no. 30 (600 wm), no. 16 (1.18 mm), no. 8 (2.36 mm) and no. 4 (4.75 mm), and a/s in. (9.5 mm), 3/a in. (19 mm), 11/2 in. (38,1 mm), 3 in. (75 mm), and 6 in. (150 mm).
  
fillersee spacing mix.
  
fillingfilling the natural voids and veins in a stone with material (cement, shellac, or synthetic resins and similar materials often mixed with stone fines).
  
final setting timethe time required for a freshly mixed cement paste, mortar or concrete to achieve final set.
  
finesthe residue resulting from the normal fabrication and processing of stone.
  
finishthe final appearance exposed stone slab surfaces are fabricated to meet.
  
finished stonebuilding stone with one or more mechanically dressed surface(s).
  
firesee fire, bisque; fire, decorating; fire, glost; fire, single.
  
fire clayan earthy or stony mineral aggregate which has as the essential constituent hydrous silicates of aluminum with or without free silica, plastic when sufficiently pulverized and wetted, rigid when subsequently dried, and of suitable refractoriness for use in commercial refractory products.
  
fire, bisquethe process of kiln-firing ceramic ware prior to glazing. 
  
fire, decoratingthe process of firing ceramic or metallic decorations on the surface of glazed ceramic ware. 
  
fire, glostthe process of kiln-firing bisque ware to which glaze has been applied. 
  
fire, singlethe process of maturing an unfired ceramic body and its glaze in one firing operation. 
  
fireproofrelatively incombustible.
  
firingthe controlled heat treatment of ceramic ware in a kiln or furnace, during the process of manufacture, to develop the desired properties.
  
firing rangethe range of firing temperature within which a ceramic composition develops properties which render it commercially useful. 
  
fissurea hairline opening in the face of stone demonstrating stone natural characteristics; a lineal or non-directional void in the face and crystalline struccture of stone that typically is very thin and irregular.
  
flagstonerelatively incombustible.
  
flakedirregularities left on the edge of the tile mainly due to the use of machine cutting tools.
  
flammablecapable of being easily ignited.
  
flash pointthe temperature at which the material gives off flammable vapor in sufficient quantity to ignite momentarily on the application of a flame under specified conditions.
  
flat trowelthe flat trowel is used in conjunction with the hawk for the transferring of mortar from the mortarboard to the wall or to other vertical surfaces. it is frequently used for spreading pure cement on the finished float coat. the flat trowel also is used for spreading mortar on floor surfaces before tiles are set.
  
fleuri cutcutting quarried marble or stone parallel to the natural bedding plane.
  
flexural strengtha property of a material or structural member that indicates its ability to resist failure in bending. (see also modulus of rupture.)
  
float coatthe final mortar coat over which the neat coat, pure coat, or skim coat is applied.
  
float stripa strip of wood about i/4″ thick and 1’/a” wide. it is used as a guide to align mortar surfaces.
  
floatinga method of using a straightedge to align mortar with the float strips or screeds. this technique also is called dragging, pulling, rodding, or rodding off.
  
flooringstone used as an interior pedestrian wearing surface.
  
fluoritean inorganic mineral of the isometric form, used as a source of fluorine for fluxing of glasses, and glazes.
  
flutingshallow, concave, parallel grooves running vertically on the shaft of a column, pilaster, or other surface.
  
fluxa substance that promotes fusion in a given ceramic mixture. 
  
fog curing1. storage of concrete in a moist room in which the desired high humidity is achieved by the atomization of fresh water. (see also moist room). 2. application of atomized fresh water to concrete, stucco, mortar, or plaster.
  
foliatedthe layered, banded structure of rock.
  
form oiloil applied to interior surface of formwork to promote easy release from the concrete when forms are removed.
  
formingthe shaping or molding of ceramic ware. 
  
forsterite porcelaina vitreous ceramic whiteware for technical application in which forsterite (2mgo sio~ is the essential crystalline phase. 
  
forsterite whitewareany ceramic whiteware in which forstertte (2mgo – sio,) is the essential crystalline phase. 
  
fracturea break in rock produced by mechanical failure. fractures include faults and joints.
  
freehand floatingthe application of wall mortar without the use of guide screeds. this technique is used by specialists when they are setting glass mosaic murals.
  
freestonea stone that may be cut freely in any direction without fracture or splitting.
  
friezea belt course, sometimes decorated with sculpture relief, occurring just under a cornice.
  
frita glass which contains fluxing material and is employed as a constituent in a glaze, body or other ceramic composition. 
  
fritted glazea glaze in which a part or all of the fluxing constituents are prefused. 
  
frost proof tiletile produced for use where freezing and thawing conditions occur. 
  
furan mortara two-part mortar system of furan resin and furan hardener used for bonding tile to back-up material where chemical resistance of floors is important.
  
furan plasticsplastics based on resins in which the furan ring is an integral part of the polymer chain, made by the polymerization -or polycondensation of furfural, furfuryl alcohol, or other compounds containing a furan ring, or by the reaction of these furan compounds with other compounds, the furan being in greater amount by weight.
  
furan resina furan resin composition used as a chemical-resistant setting adhesive or chemical-resistant grout.
  
furan resin grouta two-part grout system of furan resin and furan hardener used for filling joints between quarry tile and pavers where chemical resistant properties are required.
  
furringstripping used to build out a surface such as a studded wall where strips of suitable size are added to the studs to accommodate vent pipes or other fixtures. 
  
fusionthe process of melting; usually the result of interaction of two or more materials.