SECTION 09225

TexSton Tuscany™ Interior Plaster

PART 1	general

1.01	SUMMARY

A.	Section Includes: Integrally-colored, polymer-enhanced, Portland cement-based plaster finish.

Coordinate related sections to assure satisfactory preparation of substrates.

Gypsum Drywall (Interiors Only): Drywall shall be taped and then sanded or floated. Provide Level Three or better surface in accordance with Gypsum Association’s GA-214 - Recommended Levels of Gypsum Board Finish.

Specify expansion and control joints, corner beads, flashings and required trim. Require corrosion resistant trim and fasteners in exterior and wet areas.

Tuscany can also be used over existing surfaces, concrete, masonry, wood, metal, tile, glass, and other substrates. Contact Texstōn for substrate preparation recommendations.

B.	Related Sections:
1.	Section [09 2200 - Plaster and Gypsum Board] [___________]: [Plaster brown coat] [Gypsum board] [________________] substrates.
2.	Section [____________________________________]: Substrates.

1.02	REFERENCES

A.	ASTM C979 – Pigments for Integrally Colored Concrete.

B.	ASTM E84 – Surface Burning Characteristics of Building Materials.

C.	ISO 9002 – Quality systems -- Model for Quality Assurance in Production, Installation and Servicing.

1.03	SUBMITTALS

A.	Product Data: Submit [two] [________] copies of manufacturer's product data for finishes and other materials provided under this Section.
B.	Verification Samples: Submit [two] [_______] [sets of] samples [eight by ten] [_______] inches in size illustrating range of color[s] and texture[s] to be expected in completed work.

C.    Qualification Data: Certificate issued by distributor indicating that installer has attended training class and is authorized to install specified product.

1.04	QUALITY ASSURANCE

A.	Manufacturer Qualifications: Finish shall be produced in ISO 9002 certified facility. Manufacturer shall be company specializing in manufacturing products specified in this section with minimum four years’ experience.

B.	Installer:
1.   The installation of this material requires specialized and practiced skills. Specialized training is required for the proper installation of this material.
2.	Qualifications: Company which has completed at least five installations of finishes similar to type included in Section and which has been trained and certified by manufacturer or distributor.
3.	Certification: Submit, before Contract award [and in accordance with Instructions to Bidders], written documentation that installer is trained and certified by manufacturer or distributor to install finish. 
4.	Approved Applicators:
a.	[________________________________________].
b.	[________________________________________].
c.	[________________________________________].

C.	Mock-up:
1.	Prior to installation of work of this Section, apply sample [of each specified finish] approximately [four by four] [________] feet in size at location directed by [Architect] [________].
2.	Use specified materials and techniques to illustrate range of color[s], texture[s], and workmanship to be expected in completed work.
3.	Retain approved mock-up retain until work has been completed and accepted. [Accepted mock-up may be incorporated into final work.]

D.	Single Source Responsibility: Provide only proprietary, factory-formulated materials as     produced by Texstōn Industries, Inc. specifically for application indicated. Substitutes within the system are not permitted.

E.	Pre installation Conference: Prior to installation of work of this Section, conduct meeting at Project site to discuss quality assurance requirements. In addition to Contractor, arrange for attendance of applicator, [Architect,] [________,] and other trades affected by work of Section.

1.05	DELIVERY, STORAGE, AND HANDLING

A.	Delivery and Storage: Protect materials from excessive moisture and direct sun in shipment, storage, and handling. Deliver materials in manufacturer's unopened pails and store in dark and dry place at between 45 and 95 degrees F and with adequate air circulation.

1.06	WARRANTY

A.	Manufacturer’s Limited Warranty: Provide Manufacturer’s five-years limited warranty against products defects.

PART 2	PRODUCTS

2.01	FINISH

A.	Acceptable Product: Texstōn Tuscany™ as manufactured by Texstōn, Canoga Park, CA; phone 800-788-7113, fax 818-227-4852, www.texston.com.

B.	Composition: Premixed, dry, powder containing white Portland cement; specially graded silica sand free of dust and salts; dry acrylic polymers; rheological, water repellent, mildewicidal, and fungicidal admixtures; and mineral oxide pigments complying with ASTM C979.

Surface burning characteristics were tested with Tuscany applied over inorganic reinforced cement board.

C.	Performance: Class A; surface burning characteristics not exceeding Flame Spread = 0 and Smoke Density = 5 when tested according to ASTM E84.

D.	Finish Code # [________________}

E.    Color[s]: [_____________________].

2.02	Mixing

A.	Add small amount of clean, potable water and mix with drill mixer until homogeneous paste consistency is reached. Let material rest for two to three minutes. Then add sufficient water to yield consistency suitable for application and mix again. Do not re-temper or remix.

2.03	ACCESSORIES

A.	Primer: Provide Texstōn TexPrep Primer of type compatible with substrate. Mix with clean, washed fine sand to roughen primed surface and improve spreadability of plaster coating; add one quart of sand per five gallons of primer.

B.	RPA Additive:  Provide RPA Additive and mix according to manufacturer recommendations. 

C.	Sealer: Provide TexProtect SDS 7.5 Sealer. 

2.04	TOOLS

A.	Use trowels of types recommended by manufacturer to produce intended results.

PART 3	EXECUTION

3.01	EXAMINATION

A.	Inspect substrates and conditions affecting work of Section. Do not proceed until unsatisfactory conditions have been corrected.

3.02	PREPARATION

A.	Mask and protect adjacent surfaces not scheduled to receive products of Section.

B.	Substrate Preparation:
1.	Existing Substrates:
a.	Remove deteriorated substrates and patch in acceptable manner. 
b.	Oily or Glossy Surfaces and Oil-Based Paints: Lightly sand prior to washing
c.	Wash with trisodium phosphate mixed at rate of indicated on product label. Rinse, neutralize, and wipe dry.
d.     Substrates shall be clean and free of contamination.

2. New Substrates:
	     a. Gypsum wallboard: Level 2 finish or better. Tape joints with paper tape.
                 b. Interior plaster: Smooth steel trowel finish, flat within 1/8” in 10 feet.

C.	Prime: Apply smooth, uniform coat of primer. Allow primer to dry before finish application.

3.03	APPLICATION

A.	General:
1.	Comply with manufacturer’s installation requirements.
2.	Apply when temperature is between 45 to 95 degrees F.
3.	Do not bridge expansion or control joints.
4.	Continuously apply each layer in one general direction without allowing coating to dry at edges. Work shall be free from cold joints, scaffold lines, and other deficiencies detrimental to appearance and performance. If full width of wall cannot be covered at one time, terminate applications at natural divisions of surface such as control joints or corners.

B.	Tolerances: Slight mottling and variations in colors which are random yet consistent in overall effect are normal and acceptable features of finish.

3.04	CURING

A.	Not more than 24 hours after application, moisten plaster with water. Use spray or hose; start at bottom and work upwards.

3.05	SEALING

A.	Allow 72 hours for plaster substrate to dry before applying sealer.

B.	Apply according to sealer manufacturer’s instructions. Protect against overspray.
 
C.	Apply two coats of TexProtect SDS 7.5 Sealer. Allow first coat to dry before applying second coat. Promptly after application of second coat, wipe surface to remove excess sealer.

3.06	CLEANING

A.	Remove masking.

B.	Adjacent Surfaces: Remove plaster splatters using methods which will not damage surfaces.

3.07	PROTECTION

A.	Protect finishes as required to assure that they will be without damage at Substantial Completion.

B.	Repair damage in accordance with manufacturer’s instructions and to satisfaction of [Architect] [________].

3.08	FINISH SCHEDULE

A.	Tuscany Finish Coat
Location:[_____________].
Tuscany Finish System #[______________].

B.	Tuscany Finish Coat
Location:[_____________].
Tuscany Finish System #[______________].

C.	Tuscany Finish Coat
Location:[_____________].
Tuscany Finish System #[______________].

END OF SECTION

© 2002, TexSton. Document may be copied by qualified design and construction professionals for use in preparing project specifications or purchase orders for TexSton products. ™ Trademark of TexSton. Revised 3/21/13.