Dow Corning® 758 Silicone Weather Barrier Sealant

Dow Corning® 758 Silicone Weather

Barrier Sealant brings long-term durability

and ease of use for sealing challenging

weather barrier substrates. Its consistent

adhesion performance and compatibility

outperform traditional sealants. And with

±25% movement capability, architects

beneit from increased design lexibility.

Low-VOC Dow Corning 758 Silicone

Weather Barrier Sealant offers strong

primerless adhesion to the most challeng-

ing materials, including:

• Peel-and-stick window lashing and wraps• Nonwoven spunbound window lashing

and wraps

• Polyethylene wraps

• Polyethylene surfaces

• Polypropylene surfaces

• Common polyoleins• PVC

• Steel, aluminum and metals

• Fluorinated surfaces

Unparalleled unprimed adhesion to window lashing and fenestration materials

Table 1. Primerless Adhesion/Compatibility of Dow Corning® 758 Silicone Weather

Barrier Sealant with Weather Barrier Substrates (Representative List Only1)

Window Flashing Products and Fenestration Surfaces

Carlisle®2 Barritech VP

Carlisle®2 CCW 705

Dow Weathermate™3 Peel and Stick Flashing

Fluoropolymers – Kynar®4 Polyvinylidene Fluoride (PVDF), Duranar®5

Grace Ice and Water Shield ®6

Grace Perm-A-Barrier®6

Grace Vycor®6 Plus Self-Adhered Flashing

Henry Blueskin®7 SA

PVC – Andersen®8

TPO (Thermoplastic Polyolein) MembraneTyvek®9 Window Flashing

Vaproshield®10 Wrapshield SA®10 Membrane1This is a partial list only. Contact your local Dow Corning Representative regarding compatibility with other materials.2Registered trademark of Carlisle.3Trademark of The Dow Chemical Company.4Registered trademark of Arkema, Inc.5Registered trademark of PPG Industries Ohio, Inc.6Registered trademark of W. R. Grace & Co.7Registered trademark of Henry Company Canada, Inc.8Registered trademark of Andersen Corporation.9Registered trademark of E. I. du Pont de Nemours and Company.10Registered trademark of Vaproshield, LLC.

HANDLING PRECAUTIONS

PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED IN THIS DOCUMENT. BEFORE HANDLING, READ PRODUCT AND MATERIAL SAFETY DATA SHEETS AND CONTAINER LABELS FOR SAFE USE, PHYSICAL AND HEALTH HAZARD

INFORMATION.

THE MATERIAL SAFETY DATA SHEET IS AVAILABLE ON THE DOW CORNING WEBSITE AT DOWCORNING.COM, OR FROM YOUR DOW CORNING SALES APPLICATION ENGI-NEER, OR DISTRIBUTOR, OR BY CALLING DOW CORNING CUSTOMER SERVICE.

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 speciications 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.

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 CONSEQUEN-

TIAL DAMAGES.

Dow Corning is a registered trademark of Dow Corning Corporation.

We help you invent the future is a trademark of Dow Corning Corporation.

Build a Better Barrier is a trademark of Dow Corning Corporation.

©2010, 2011, 2013 Dow Corning Corporation. All rights reserved.

Printed in USA AGP12952 Form No. 63-1173C-01

Contact usDow Corning is collaborating with industry professionals

around the world to develop solutions to improve the energy

eficiency of buildings, reduce the eco-footprint of construc tion materials, and improve the health and safety of building

occupants. Learn more about Dow Corning 758 Silicone

Weather Barrier Sealant and our full range of High Performance

Building Solutions, including service and support, at

BuildaBetterBarrier.com.

Dow Corning has sales ofices, manufacturing sites, and sci-ence and technology laboratories around the globe. Find local

contact information at dowcorning.com/ContactUs.

Table 2. Product Properties

Property Unit Value

Flow, Sag or Slump inch 0.06

VOC Content g/L 55

Durometer Hardness, A Scale 45

Tensile, Maximum psi 200

Elongation % 800

Movement, Ext./Comp. % +/-25

Staining None

QUV, 5,000 hr Pass +

Shelf Life months 12

Figure 1. Sealant Comparison – Adhesion to Typical Building Substrates

0

5

10

15

20

25

30

35

Pe

el

Str

en

gth

(7-d

ay p

eak p

li)

Sealants

Acrylic Silane-Terminated Polyether

Polyurethane Dow Corning® 758 Silicone

Weather Barrier Sealant

Substrates

Anodized Aluminum

PVC

Vinyl

Polyester Powder Coating

Acrylic Coating

Mica Flake Fluoropolymer Coating

Galvanized Steel

Figure 2. Sealant Comparison – Adhesion to Weather Barriers

0

5

10

15

20

25

30

Acrylic Silane-Terminated Polyether

Polyurethane Dow Corning® 758 Silicone

Weather Barrier Sealant

Peel S

tren

gth

(7-d

ay p

eak p

li)

Sealants

Substrates

Substrates

Low-Density Polyethylene

Weather Barrier Mfr. 1(polyolefin)

Weather Barrier Mfr. 2(polyethylene)

Weather Barrier Mfr. 3

Weather Barrier Mfr. 3(polyethylene)

Weather Barrier Mfr. 4(polyethylene)

Images: AV14070, AV16705