Download Guide Specifications

Sto Corp.
3800 Camp Creek Parkway
Bldg. 1400, Suite 120
Atlanta, GA 30331
Telephone: 404-346-3666
Fax:
404-346-7422
www.stocorp.com
80222 StoSilco Lastic
Silicone Enhanced, Acrylic-Based, Elastomeric Vertical Above-Grade Exterior Wall
Existing EIFS and Acrylic Coated Concrete, Masonry, and Stucco Surfaces
SECTION 090190.92
COATING RESTORATION
PART 1 - GENERAL
1.01
SUMMARY
A.
Provide finish coating for vertical, above-grade exterior insulation and finish system or stucco
(portland cement plaster).
B.
Related Sections: Other specification sections which relate directly to the work of this section
include the following:
1.
2.
3.
1.02
SUBMITTALS
A.
1.03
1.05
Product Data: Submit manufacturer's product data and installation instructions for each
material and product used. Include manufacturer's Material Safety Data Sheets.
REFERENCES
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
L.
1.04
Section 072400, Exterior Insulation and Finish Systems
Section 079200, Joint Sealants
Section 092200, Portland Cement Plaster
ASTM C 1305, Crack Bridging
ASTM D 412, Tensile Strength, Elongation, and Recovery
ASTM D 522, Mandrel Bend Flexibility
ASTM D 2247, Moisture Resistance
ASTM D 3273, Mold Resistance
ASTM D 4541, Direct Tensile Bond
ASTM E 96, Water Vapor Permeability, wet cup method
South Coast Air Quality Management District (SCAQMD) Rule 1113
EPA Method 24, VOC
EN 1062, Carbon Dioxide Diffusion
ASTM D 6904, Wind Driven Rain (formerly Federal Specification TT C 555-B)
SWRI Priority Property Profile for Elastomeric Wall Coatings
QUALITY ASSURANCE
A.
Manufacturer's Qualifications: The manufacturer shall be a company with at least twenty years
experience and regularly engaged in the manufacture and marketing of products specified
herein. The manufacturer shall have an ISO 9001:2008 certified quality system and ISO
14001:2004 Environmental Management System.
B.
Installer's Qualifications: The contractor shall be qualified to perform the work specified by
reason of experience.
DELIVERY, STORAGE AND HANDLING
A.
Deliver products in original packaging, labeled with product identification, manufacturer, batch
number and shelf life.
Sto Guide Specification
Revised: August 2012
Sto Corp. is ISO 9001:2008 and 14001:2004 Registered
Page 1 of 3
80222 StoSilco Lastic
Acrylic-Based, Elastomeric Vertical Above-Grade Exterior Wall
Coating for New Concrete, Stucco, and Masonry
B.
Store products in a dry area with temperature maintained between 50 and 85 degrees F (10
and 29 degrees C). Protect from direct sunlight. Protect from freezing. Protect from extreme
heat (>90 degrees F (32 degrees C)).
C.
Handle products in accordance with manufacturer's printed recommendations.
PART 2 - PRODUCTS
2.01
MATERIALS
A.
Acrylic-based, silicone enhanced, weatherproofing colored coating: Single component acrylicbased coating, containing acrylic polymer, silicone resin emulsion, and colored pigments.
Product shall comply with the following:
1.
80222 StoSilco Lastic, as manufactured by Sto Corp., 3800 Camp Creek Parkway,
Building 1400, Suite 120, Atlanta, Georgia 30331.
Performance and Physical Properties: Meet or exceed the following values for
material cured at 73 degrees F (23 degrees C) and 50 percent relative humidity
(unless otherwise specified).
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
2.
Application: Spray, roller, or brush.
Working Time: 10-20 minutes.
Crack Bridging: No cracking at -15 degrees F (-26 degrees C), ASTM C 1305
Tensile Strength: 400 psi (2.75 MPa), minimum. ASTM D 412
Elongation: 300 % minimum, at break, ASTM D 412
Flexibility Mandrel Bend: No cracking at -14 degrees F (-26 degrees C), ASTM
D 522.
Moisture Resistance: No defects attributable to adhesion, discoloration,
blistering, cracking, flaking, ASTM D 2247, 14 day exposure.
Mold Resistance: No Mold Growth at 90 days, ASTM D 3273
Adhesion to Concrete: 320 psi (2.20 MPa), ASTM D 4541
Water Vapor Permeability: 40 perms (2290 ng/Pa.s.sq.m.) tested at 6 mils
applied in one coat, and 37 perms (2110 ng/Pa.s.sq.m.), tested at 22 dry mils,
applied in two coats, ASTM E 96, wet cup method.
VOC: <50 g/L, EPA 24, complies with SCAQMD Rule 1113
Carbon Dioxide Diffusion Resistance Coefficient: 491,000, EN 1062
Carbon Dioxide Diffusion Resistance: 142 m, EN 1062
Resistance to wind-driven Rain: PASS, No water penetration, ASTM D 6904
(formerly Fed. Spec. TTC555B)
Product shall comply with SWRI Priority Property Profile for Elastomeric Wall
Coatings.
PART 3 - EXECUTION
3.01
INSTALLATION OF PRIMER AND ELASTOMERIC COATING
A.
Examine substrates and conditions under which materials will be installed. Do not proceed
with installation until unsatisfactory conditions are corrected.
B.
Coordinate installation with adjacent work to ensure proper sequence of construction. Protect
adjacent areas and landscaping from contact due to mixing and handling of materials.
Surface Preparation: Comply with manufacturer's printed instructions and the following.
C.
1.
2.
Sto Guide Specification
Revised: August 2012
Clean surfaces of bond-inhibiting materials including oil, mildew, dust, and dirt. Refer
to Sto Procedure No. 1.01, Cleaning EIFS.
Surface must be dry at time of application.
Sto Corp. is ISO 9001:2008 and 14001:2004 Registered
Page 2 of 3
80222 StoSilco Lastic
Acrylic-Based, Elastomeric Vertical Above-Grade Exterior Wall
Coating for New Concrete, Stucco, and Masonry
D.
Mixing: Comply with manufacturer's printed instructions and the following.
1.
2.
E.
Precondition to temperature of 70 plus or minus 5 degrees F (21 plus or minus 2.5
degrees C) prior to application.
Mix using a mechanical mixer to achieve a uniform consistency immediately prior to
use.
Application: Comply with manufacturer's printed instructions and the following.
1.
2.
3.
4.
Apply when ambient and surface temperatures are 40 degrees F (4 degrees C) and
expected to remain above 40 degrees F (4 degrees C) for 24 hours after application.
Do not apply in freezing conditions or during precipitation.
Do not apply if the surface temperature is less than 5 degrees F (2.8 degrees C)
above the ambient dew point temperature.
Select one of the options below, depending on type construction, weather exposure
and required level of performance:
a.
b.
5.
6.
Apply one uniform coat, 14 – 18 wet mils, 80222 StoSilco Lastic to primed
surface.
Apply two uniform coats, 14-18 wet mils, per coat, 80222 StoSilco Lastic to
primed surface. Allow first coat to dry completely before applying second
coat.
Protect installed materials from rain, freezing, and continuous high humidity until
completely dry.
Do not overcoat with solvent-based materials.
END OF SECTION
Copyright 2012 Sto Corporation. All Rights Reserved.
A copyright license to reproduce this specification is granted to specifying architects and engineers.
ATTENTION
Sto products are intended for use by qualified professional contractors, not consumers, as a component of a
larger construction assembly as specified by a qualified design professional, general contractor or builder.
They should be installed in accordance with those specifications and Sto’s instructions. Sto Corp. disclaims all,
and assumes no, liability for on-site inspections, for its products applied improperly, or by unqualified persons
or entities, or as part of an improperly designed or constructed building, for the nonperformance of adjacent
building components or assemblies, or for other construction activities beyond Sto’s control. Improper use of
Sto products or use as part of an improperly designed or constructed larger assembly or building may result in
serious damage to Sto products, and to the structure of the building or its components. STO CORP.
DISCLAIMS ALL WARRANTIES EXPRESS OR IMPLIED EXCEPT FOR EXPLICIT LIMITED WRITTEN
WARRANTIES ISSUED TO AND ACCEPTED BY BUILDING OWNERS IN ACCORDANCE WITH STO’S
WARRANTY PROGRAMS WHICH ARE SUBJECT TO CHANGE FROM TIME TO TIME. For the fullest,
most current information on proper application, clean-up, mixing and other specifications and warranties,
cautions and disclaimers, please refer to the Sto Corp. website, www.stocorp.com.
Sto Guide Specification
Revised: August 2012
Sto Corp. is ISO 9001:2008 and 14001:2004 Registered
Page 3 of 3