Dow Corning® 790 Silicone Building Sealant

78 Pages·2016·16.55 MB·English

Transmittal
Date: 7June2016 NumberofPages(incl.cover): 77
To: MiguelPacheco Tel.Number:
NastosConstruction,Inc.
FaxNumber:
E-Mail:
Copiesto: Tel.Number:
FaxNumber:
E-Mail:
Project: PhysicalEducationBuildingExteriorRenovations–GermantownCampus
From: ChelciE.Mannarino ProjectNumber:150049.01
DeliveredVia: U.S.Mail Fax HandCarried E-Mail
Overnight Messenger Pickup withAttachments
CopiesDeliveredVia: U.S.Mail Fax HandCarried E-Mail
Overnight Messenger Pickup withAttachments
Comments:
Please find attached Submittal 7.13 with our comments for your use and corresponding
memorandum. Wehave also attachedcommentsfrom Montgomery College.
PerYourRequest Approved NoCorrection
ForYourInformation/Records ApprovedasNoted NotApproved
ForYourApproval/Comments ReviseandResubmit ResubmitforRecordCopy
ForYourReview/Comments ReturningtoYou PleaseReturn
Other
I:\DC\Projects\2015\150049.01-PGRC\WP\024PKFrederick-T-150049.01.anp.docx
SUBMITTAL REVIEW COMMENTS
Date 7 June 2016
To: Nastos Construction, Inc.
Copies to: Montgomery College
SGH Project: 150049.01 – Physical Education (PG) Building, Montgomery
College, Germantown Campus
Specification Section: 07 92 00– Air andWater Barrier
Paragraph: 2.02to 2.03
Date Received: 12 May 2016
Submittal No.: 7.13
Submittal Description: Sealant Materials and Accessories - Product Data
Reviewed by: Philip K. Frederick
We reviewed Nastos Construction, Inc.’s submittal regarding the sealant materials and
accessories.
1. SUBMITTED ITEMS
Thesubmittal includes thefollowing items:
• Dow Corning 790 Silicone Sealant by Dow Corning – Exterior silicone sealant product
data andsamples
• MasterSeal NP1 by BASF – Exterior polyurethane sealant product data
• DowCorning786-MWhitebyDowCorning–Mildewresistantjointsealantproductdata
• AC-20 FRT by Pecora–Acrylic latexjoint sealant product data
• Bi-Cellular Backer Rod(SOF Rod) by Construction Foam Products product data
Submittal ReviewComments –Project 150049.01 - 2- 7 June 2016
2. COMMENTS
• The submitted MasterSeal NP1 polyurethane sealant by BASF was formerly the
specified Sonolastic NP1 sealant. The name change became effective
15 January 2014per Master Builders Solutions.
• Provide manufacturers’ standard color charts for case-by-case color selection. Color
shall be selectedby theOwner; approval pending successfulmockupreview.
• Perform adhesion tests to verify surface preparation requirements and confirm if the
surface preparation requirements shall include the manufacturer’s recommended
primersfor each substrate.
• Open cell or bi-cellular “sof” rod backer rods are not approved for this application.
Provide the specified backer rod or similar closed-cell “HBR” backer rod (e.g., HBR
Backer RodbyNomaco).
• MSDS Approval Limitation: Submittals have not been reviewed for environmental or
safety problems that these materials may cause. Contractor shall remain responsible
forallworkerandpublicsafety,whichshallincludecompliancewithallapplicablefederal,
state,andlocalregulatoryrequirements,andforcompliancewiththecontractprovisions.
3. MISSING ITEMS
• Submit surface cleaners and primers recommended by sealant manufacturers.
• Submit product dataforbond breaker tape.
4. SUBMITTAL STATUS
Weprovide thefollowing statusforthe submittedinformation:
Submittal Action Comment
DowCorning790Silicone ApprovedasCorrected For exterior applications around window
SealantbyDowCorning frameperimeters.
MasterSealNP1byBASF ApprovedasCorrected For exterior application in masonry and
EIFS.
DowCorning786-MWhite ApprovedasCorrected For interior application in the Natatorium.
byDowCorning Provide Color Chart for Owner Review and
Selection.
AC-20FRTbyPecora ApprovedasCorrected For interior applications other than in the
Natatorium. Provide Color Chart for Owner
ReviewandSelection.
Bi-CellularBackerRod ReviseandResubmit Provide closed-cell backer rod (e.g., HBR
(SOFRod)byConstruction BackerRodbyNomaco,orsimilar).
FoamProducts
Submittal ReviewComments –Project 150049.01 - 3- 7 June 2016
Review of the submittal by Simpson Gumpertz & Heger Inc. is only for conformance with the
design concept of the project and compliance with the information given in the Contract
Documents. Contractor is responsible for dimensions to be confirmed and correlated at the job
site; for information that pertains solely to the fabrication processes or to techniques of
construction; andfor coordination of the work of all trades.
I:\DC\Projects\2015\150049.01-PGRC\WP\024PKFrederick-Submittal-150049.01.anp.docx
Submittal Review Comments 
Date:       June 3, 2016 
To:      Nastos Construction Inc. 
Project:     PG Building Renovation 
Submittal Number:   7.13 
Submittal Description:  Sealant Materials & Accessories 
Specification Section:  079200 – Air & Water Barrier 
Date Received:    May 12, 2016 
Reviewed By:     Ali Fadl   
Comments: 
1. No Comments 

End of Comments 

Ali Fadl, RA, LEED AP 
Project Manager II 

Montgomery College 
Office of Central Facilities 
40 West Gude Drive, Suite 200 
Rockville, MD  20850‐1166 
240.567.7369 office 
443.527.2517 cell 
[email protected] 

1
NASTOS CONSTRUCTION INC. Subm. # 7.13
1421 Kenilworth Ave. N.E. Washington, D.C. 20019 Submittal Date
5/12/2016
MATERIAL APPROVAL SUBMITTAL REGISTER
Resubmitted Dates
Project: Physical Education Bldg Exterior Renovations - Germantown Campus
FOR: (Architect/Engineer) FROM: (Contractor) (Sub-Contractor/Supplier/Manufact./Fabricator)
Simpson Gumpertz & Heger Nastos Construction, Inc. Million Construction, Inc.
Philip K. Frederick Phone: [phone] Phone: [phone]
PROJECT NUMBER CONTRACT Miguel Pacheco Jose Soto
RFP No. 616-008 No. 554 Phone: [phone] x 115 Phone: [phone]
Informational: Product Data X Test. Report/Lab Test Cert.
Action: Shop Drawings Samples X
TO BE COMPLETED BY CONTRACTOR FOR A/E FIRM USE ONLY
Approved/Approved as Correct/Revise &
INITIAL
P. M. Sect./Parag. Numb DESCRIPTION OF MATERIAL Resubmit/Not Approved/Resubmit for Record
Copy/Reviewed
079200 - 2.02 SEALANT MATERIALS:
A.Silicone Sealant: Dow Corning 790
B. Urethane Sealant: BASF Sonolastic NP1
C. Mildew-Resistant Joint Sealant: Dow Corning 786-M
D. Latex Joint Sealant: Pecora AC-20
079200 - 2.03 ACCESSORIES:
A. Back Rod: Bi-Cellular Backer Rod SOF Rod
BY COMPLETING THIS FORM, THE UNDERSIGNED CONTRACTOR CERTIFIES THAT
THE MATERIAL COMPLIES WITH ALL SPECIFICATIONS OF SUBJECT CONTRACT
DATE: TYPE OR PRINT NAME AND TITLE SIGNATURE
5/12/2016 Don Foster / Sr. Project Manager
FOR A/E EVALUATION AND ACTION DATE:
Philip K. Frederick
(Review Seal & Sign)
07 92 00
2.02 Sealant Materials - A
Product Information
Silicone
7.13
Sealants 05-12-2016
®
Dow Corning 790 Silicone
Building Sealant
FEATURES & BENEFITS Ultra-low-modulus sealant for new and remedial construction joint
sealing applications
 Excellent performance even in
building joints that experience
extreme movement APPLICATIONS
 Suitable for new and remedial Dow Corning® 790 Silicone Building Sealant offers outstanding unprimed
construction adhesion to masonry and is particularly effective for sealing expansion and
 Extension/compression capability control joints, precast concrete panel joints, Exterior Insulation and Finish
of +100/-50 percent Systems (EIFS) joints, curtainwall joints, mullion joints, stone pavers, and many
 Excellent weathering properties other construction joints. When used in accordance with Dow Corning application
and resistance to sunlight, rain, and testing recommendations, the sealant forms a durable, flexible, watertight
snow, and temperature extremes bond with many common building materials, including combinations of stone,
 Excellent unprimed adhesion to concrete, masonry, granite, marble, aluminum, painted substrates, and glass.
masonry, concrete substrates
 Easy application over a wide TYPICAL PROPERTIES
temperature range Specification Writers: These values are not intended for use in preparing
specifications. Please contact your local Dow Corning sales office or your Global
COMPOSITION Dow Corning Connection before writing specifications on this product.
 Ultra-low-modulus, one-part,
Test Property Unit Result
neutral-cure silicone sealant
As Supplied
ASTM C 679 Tack-Free Time, 50% RH hours 1
Curing Time, 50% RH, at 25°C days 7-14
(77°F), 3/8" depth
Full Adhesion, cured joint days 14-21
ASTM D 2202 Flow, Sag, or Slump None
CTM 98 B Working Time minutes 10-20
EPA Method 24 VOC Content1, maximum g/L 23
As Cured – After 7 days at 25°C (77°F) and 50% RH
ASTM C 661 Durometer Hardness, Shore A points 15
ASTM D 412 Tensile Strength, maximum psi (kg/mm2) 100 (0.070)
ASTM C 794 Peel Strength lb/in (kg/cm) 25 (4.46)
ASTM C 1135 Tensile
at 25% extension psi (kg/mm2) 15 (0.010)
at 50% extension psi (kg/mm2) 20 (1.015)
ASTM C 719 Joint Movement Capabilities
Extension/Compression % +100/-50
ASTM C 1248 Staining, various substrates None
*ASTM: American Society for Testing and Materials.
CTMs (Corporate Test Methods) correspond to standard ASTM tests in most instances. Copies
of CTMs are available upon request.
1Based on South Coast Air Quality Management District of California. Maximum VOC is listed
both inclusive and exclusive of water and exempt compounds. For a VOC data sheet for a
specific sealant color, please send your request to [email protected].
DESCRIPTION LIMITATIONS
Suitable for new construction or Dow Corning 790 Silicone Building
remedial applications, Dow Corning Sealant should not be applied:
790 Silicone Building Sealant
provides excellent performance, even  In structural applications.
in building joints that experience  Below grade or to materials that
extreme movement. It places a low outgas, which can cause bubbling
stress on the sealant/substrate bond in curing sealant.
line to minimize failures in moving  On brass or copper or other
joints. similar material that can be
corroded.
Dow Corning 790 Silicone Building  To surfaces that are continuously
Sealant is available in 11 colors: immersed in water.
black, precast white, gray, natural
 For use as an interior penetration
stone, bronze, adobe tan, blue spruce,
firestop sealing system.
HANDLING
rustic brick, sandstone, charcoal, and
 To building materials that bleed
dusty rose. Custom colors are PRECAUTIONS
oils, plasticizers, or solvents –
available upon request. PRODUCT SAFETY materials such as impregnated
INFORMATION REQUIRED FOR wood, oilbased caulks, green or
APPROVALS/ SAFE USE IS NOT INCLUDED IN partially vulcanized rubber
SPECIFICATIONS THIS DOCUMENT. BEFORE gaskets, or tapes or bituminous
This sealant meets or exceeds the HANDLING, READ PRODUCT below-grade waterproofing and
requirements of: AND MATERIAL SAFETY DATA asphalt-impregnated fiberboard.
SHEETS AND CONTAINER
 ASTM Specification C 920, Type  In totally confined spaces because
LABELS FOR SAFE USE,
S, Grade NS, Class 100/50, Use the sealant requires atmospheric
PHYSICAL AND HEALTH
T, NT, M, G, A, and O moisture for cure.
HAZARD INFORMATION. THE
 Many UL wall/floor fire designs,  To surfaces that will be painted
MATERIAL SAFETY DATA
some without a protective cover after application. The paint film
SHEET IS AVAILABLE ON THE
plate (see www.ul.com for current will not stretch with the extension
DOW CORNING WEBSITE AT
listing) of the sealant and may crack and
DOWCORNING.COM, OR FROM
 Fire Tests of Building peel and most likely will not
YOUR DOW CORNING SALES
Construction and Materials, UL adhere to the sealant.
APPLICATION ENGINEER, OR
263 (ASTM E 119)  To surfaces in direct or indirect
DISTRIBUTOR, OR BY CALLING
contact with food.
DOW CORNING CUSTOMER
Data from an independent test lab and  To wet or frost-laden surfaces.
SERVICE.
Sealant, Waterproofing and  In applications where solvents or
Restoration Institute validation are primers are not fully dried prior to
USABLE LIFE AND
available from Dow Corning and the sealant application. Uncured
STORAGE
SWR Institute. A complete product sealant is very sensitive to many
specification sheet for this product is When stored at or below 32°C (90°F), solvents, primers, and cleaning
available upon request. Dow Corning 790 Silicone Building agents; these may cause the
Sealant has a shelf life of 12 months sealant to remain uncured or
HOW TO USE from date of manufacture. Refer to tacky.
product packaging for “Use By” date.
Consult the current version of the
Dow Corning Americas Technical This product is neither tested nor
Manual, Form No. 62-1112, (available PACKAGING represented as suitable for medical or
from dowcorning.com/construction) INFORMATION pharmaceutical uses.
for detailed information on application Dow Corning 790 Silicone Building
methods, joint design, field testing, Sealant is packaged in 10.3-fl oz HEALTH AND
and warranty requirements when using (305-mL) disposable cartridges that fit ENVIRONMENTAL
Dow Corning® brand sealants. Please ordinary caulking guns, 20-fl oz INFORMATION
contact your local Dow Corning Sales (590-mL) E-Z Pak foil sausages that
To support customers in their product
Application Engineer for specific fit caulking guns, and also in 2.0- and
safety needs, Dow Corning has an
advice. 4.5-gal (7.5- and 17-L) bulk pails. It
extensive Product Stewardship
can be dispensed by many air-operated
organization and a team of Product
guns and most types of bulk
Safety and Regulatory Compliance
dispensing equipment.
Dow Corning is a registered trademark of Dow Corning Corporation.
We help you invent the future is a trademark of Dow Corning Corporation.
2014, May 6 XIAMETER is a registered trademark of Dow Corning Corporation.
Form No. 61-884O-01 © 2000 - 2014 Dow Corning Corporation. All rights reserved.
2
(PS&RC) specialists available in each
area.
For further information, please see our
website, dowcorning.com or consult
your local Dow Corning
representative.
LIMITED WARRANTY
INFORMATION – PLEASE
READ CAREFULLY
The information contained herein is
offered in good faith and is believed to
be accurate. However, because
conditions and methods of use of our
products are beyond our control, this
information should not be used in
substitution for customer’s tests to
ensure that our products are safe,
effective, and fully satisfactory for the
intended end use. Suggestions of use
shall not be taken as inducements to
infringe any patent.
Dow Corning’s sole warranty is that
our products will meet the sales
specifications in effect at the time of
shipment.
Your exclusive remedy for breach of
such warranty is limited to refund of
purchase price or replacement of any
product shown to be other than as
warranted.
TO THE FULLEST EXTENT
PERMITTED BY APPLICABLE
LAW, DOW CORNING
SPECIFICALLY DISCLAIMS
ANY OTHER EXPRESS OR
IMPLIED WARRANTY OF
FITNESS FOR A PARTICULAR
PURPOSE OR
MERCHANTABILITY.
DOW CORNING DISCLAIMS
LIABILITY FOR ANY
INCIDENTAL OR
CONSEQUENTIAL DAMAGES.
We help you invent the future.
dowcorning.com
Dow Corning is a registered trademark of Dow Corning Corporation.
We help you invent the future is a trademark of Dow Corning Corporation.
2014, May 6 XIAMETER is a registered trademark of Dow Corning Corporation.
Form No. 61-884O-01 © 2000 - 2014 Dow Corning Corporation. All rights reserved.
3
To: Dow Corning Customer
Reference: Sealant Certification for:
DOW CORNING® 790 SILICONE BUILDING SEALANT
DOW CORNING® 790 SILICONE BUILDING SEALANT, meets or exceeds the following
specifications
 ASTM C 920, Standard Specification for Elastomeric Joint Sealants, Type S, Grade NS, Class
100/50, Use T, NT , M, G, A, and O.
 Federal Specification TT-S-001543A (COM-NBS) Class A for silicone building sealants
 Federal Specification TT-S-00230C (COM-NBS) Class A for one component building
sealants
 Fire Test of Building Construction and Materials UL 263 (ASTM E119)
 ASTM C719: +100% and -50% Movement
 SWRI Sealant Validation, Pass  Extension 100% Compression -50%
 USDA Authorized in six colors for sealant non-food contact areas in USDA regulated
facilities
On behalf of Dow Corning Corporation, we appreciate your business and your commitment to silicone
technology. If you have any further questions, please feel free to contact us.
Sincerely,
DOW CORNING CORPORATION
Distributor Resource Center, Construction
800 346 9882 Option 2
[email protected]
Dow Corning Corporation
Midland, Michigan 48686-0994
Phone: [phone]
www.dowcorning.com