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All Glossary Terms


A term used in knitting and tufting that measures the distance in between two needle points. It is measured in fractions of an inch.

Gauge Rake

A device used to measure and apply cement or other coatings at a specific depth or thickness.

Gauged or Gauging

Measuring stone, cement, or other material in order to produce uniform thickness throughout the entire slab.

Glass Mosaic Tiles

Small pieces of glass arranged and mounted on a backing.

Glass-Fiber Reinforced Concrete (GFRC)

A type of cement that contains glass fibers for added durability and strength.


A protective coating fired onto a flooring surface, often colored.

Glazed Tiles

Tiles covered with a glossy or matte glaze which also adds moisture resistance.


Firing a protective coating onto a flooring surface, often colored for aesthetic reasons.


The ability of a surface to reflect or shine.

Gloss Meter

A device used to measure the gloss of a surface.

Glossing Up

Increasing the glossiness of a floor by rubbing with friction or by using a product.

Glue-less Floating Installation

aka: click system, locking tongue and groove

A type of floating installation that does not require any glue. The boards are locked together with a tongue and groove mechanism and are held down by the baseboard but not attached to the subfloor.

Glue-less Locking Tongue and Groove

A type of floating installation that does not require any glue. The boards are locked together with tongue and groove mechanism.

Glued Down

A method of floor installation where bamboo flooring is adhered to the concrete or wooden subfloor using glue adhesive.

Glued Laminate Flooring

Laminate flooring that requires the use of glue in its installation.


A system for classifying the amount of natural characteristics allowed in a piece of wood. Most common grades are known as clear, select or better, common (No. 1 and No. 2), tavern grade, and cabin grade (also know as country and utility).

Grain Raise

A condition where surface fibers in wood rise due to moisture in the application of finish.


Graininess The appearance of grainy particles in a finishing material.


The appearance of the grain in a piece of wood that is determined by the way it is cut.


An igneous stone made of quartz, mica, and feldspar that comes from molten lava. It is extremely dense, has a glossy appearance, and may contain small amounts of other minerals.

Granite Gneiss

A layering within stone that occurs when the rock is compressed in one direction and the crystals in the rock grow perpendicular to the direction of the pressure. This results in what appears to be bands.

Granulated Blast Furnace Slag

A glassy material made from chilled furnace slag that is often used in concrete in place of cement. It improves durability, and extends working and drying time.


A moisture resistant panel that is similar to drywall.


Stone that has taken on a greenish color due to chlorite, plagioclase, actinolite, or epidote in its composition.


A method of preparing a surface by using abrasive materials to grind away imperfections.


In a tongue and groove installation, the groove is cut out of the side of the piece of flooring to allow the tongue of the adjacent piece to fit in.


A tool with a tapered protrusion that is slid across wet concrete to create grooves or control joints.


A creamy mixture of mortar, cement or other cementious material and water used to fill joints and grout lines. It often has sand, gravel or other similar material added and is available in a variety of colors.


Filling joints with grout when installing tile floors.

Grouting Float

A trowel that is used to push grout firmly into joints.