Admixture
Material other than water, aggregate or basic cementitious material
added to the batch before or during job mixing.

Aggregate
A granular material such as natural sand.

Basecoat
The total of all stucco coats applied prior to application of the
finish coat. The combined scratch and brown coats make up the basecoat. Any
stucco coat applied before the application of the finish coat.

Bond
Adhesion of stucco to other surfaces against which it is applied;
adhesion of cement paste to aggregate, adhesion between stucco coats or between
stucco and a substrate.

Bonding Agent
A compound applied as a coating to a suitable substrate to enhance a
bond between it and a succeeding layer, as between a subsurface and a
succeeding stucco application.

Brown Coat
In multiple coat work, the second coat applied over the scratch coat.
In two-coat work, brown coat refers to the double-up basecoat. The brown
coat is the coat directly beneath the finish coat.

Building Structure
A wall assembly consisting of wood or steel studs with a sheathing
board.

Cementitious Material
A material that, when mixed with water and with or without aggregate,
provides the plasticity and the cohesive and adhesive properties
necessary for placement and the formation of a rigid mass.

Cold Joint
The juncture of fresh stucco application adjacent to set plaster.

Corner Reinforcement (Corner Bead)
Reinforcement for stucco used at corners to provide continuity between
two intersecting stucco planes.

Curing
Keeping freshly applied stucco moist. Curing assures satisfactory
hydration and carbonation of the cementitious materials and proper hardening of
the stucco.

Dash-bond Coat
A thick wet mixture of Portland cement and water, with or without
aggregate, dashed onto the surface of stucco base, such as smooth monolithic
concrete or concrete blocks, to improve the mechanical key for subsequent stucco
coats.

Double back
Application of second coat of stucco (brown coat) to scratch coat
stucco immediately after the scratch coat has attained sufficient rigidity to
receive it.

Factory Prepared Stucco Materials
Pertaining to material combinations that have been formulated and
dry-blended by the manufacturer, requiring only the addition of mixing
with water to produce stucco. (Stucco finish coat)

Fiber - Natural or Synthetic
An elongated fiber or strand admixture added to stucco mix to improve
cohesiveness, strength and helps reduce cracking.

Floating
Act of compacting and leveling a stucco basecoat; act of bringing the
aggregate to the surface of finish-coat stucco.

Framing
Structural members such as columns, beams, girders, studs, joists,
headers, trusses, etc., of wood or steel.

Ground
Determines the thickness of stucco

Lath
Reinforcement base to receive plaster, generally secured to a
substrate.

One-Coat Stucco
A proprietary cladding system, consisting of lath, one basecoat and a
finish coat.

Rod
A straightedge used to straighten the face of walls and soffits.

Rodding
A method of straightening the stucco basecoat.

Scoring
Grooving by scratching or scoring, usually horizontally, of the scratch
coat to provide mechanical keys for the brown coat.


Scratch Coat
The first coat of stucco applied to a stucco base in multiple-coat
work, usually cross-raked or scratched to form a mechanical key for
succeeding brown coat.

Screed
A tool used to establish a flat plane and uniform stucco thickness.

Self-furring
Lath manufactured to include raised portions of the lath, ribs or
dimples that hold the lath away from the supporting surface and position it for
embedment with stucco.

Skim Coat
A finish coat applied to an existing stucco surface or other substrate
to improve appearance.

Stucco Finish Coat
The final layer of stucco (job-site mixed or pre-manufactured) applied
over basecoat stucco or direct to concrete.

Suction
The absorptive capacity of a substrate or stucco surface.

Trim Accessory Joint (control/expansion joint)
A designated separation device in a stucco system that allows for
movement caused by expansion or contraction of the system or building. The
construction of the separation is accomplished by installation of
manufactured devices for this application or by fabrication procedures
in the field using suitable materials.

Workability
The property of freshly mixed stucco that determines its working
characteristics, i.e. the ease with which it can be mixed, placed and
finished.