backsplash from the text.
**************************************************************************
2.2.1
High-Pressure Laminated Plastic Clad Countertops
Clad countertop and backsplash shall be constructed of [19 mm 3/4 inch
thick plywood] [or] [19 mm 3/4 inch thick, 20 kg 45 pound density particle
board core] and shall be [post formed cove type] [or] [fully formed type].
[Cove type shall be a single unit with self-edging and plastic laminate
coved at the juncture of the countertop and backsplash.] [Fully formed type
or square edge shall be a unit with shaped edges using wood nose molding at
counter edge and shall include a separate backsplash. Backsplash shall be
not less than 90 mm 3-1/2 inches high.] Edging and trim shall consist of
plastic laminate cut and fitted to all exposed edges. End splashes
constructed of 19 mm 3/4 inch plywood or 19 mm 3/4 inch thick, 20 kg 45
pound density particle board core shall be supplied. Continuous sheets of
longest lengths practicable shall be provided. Joints in surface sheeting
shall be tight and flush and held to a practicable minimum. When the
countertop and backsplash are two separate units, GP50 plastic laminate
shall be used. When the countertop and backsplash are one unit, PF42
plastic laminate shall be used. Plastic laminate shall conform to the
requirements of NEMA LD 3 and plastic laminate adhesive shall be contact
type applied to both surfaces. For fully formed and cove type countertops,
the post-forming plastic laminate shall not be bent to a radius smaller
than the limit recommended by the plastic manufacturer.
2.2.2
Solid Polymer Countertops
Countertop and backsplash shall be constructed [with integral [sink] [and]
[lavatory]] [of sheet material for sink/lavatory cutout]; as shown.
Material shall be [12.7] [19] [_____] mm [1/2] [3/4] [_____] inch
thickness, cast, and filled nonporous solid surfacing composed of acrylic
polymer, mineral fillers, and pigments. Superficial damage to a depth of
0.25 mm 0.010 inch shall be repairable by sanding or polishing. Material
shall comply with the following performance requirements.
Tensile Strength; 18.3 N/mm2 4100 psi, when tested in accordance
a.
with ASTM D 638.
b.
Hardness; Barcol Impressor 50 when tested in accordance with ASTM
D 2583.
c.
Flammability; rated Class I with a flame spread of 25 maximum and
a smoke developed of 100 maximum when tested in accordance with
ASTM E 84.
d.
Boiling water resistance; no effect when tested in accordance with
NEMA LD 3.
e.
High temperature; no effect when tested in accordance with NEMA LD
3.
f.
Liquid absorption; 0.06% maximum (24 hours) when tested in
accordance with ASTM D 570.
g.
Sanitation; National Sanitation Foundation approval for food
contact in accordance with Standard 51 and approval for food area
applications.
SECTION 12320A
Page 7
Previous Page
