Technical Data Sheet

DOWSIL™ 895 Structural Glazing Sealant

One-part silicone sealant

Features &  Meets European standards for structural glazing application, as developed by EOTA
Benefits  Excellent adhesion to a wide range of substrates including coated, enameled and
reflective glasses and polyester coated aluminum profiles and stainless steel profiles
 Odorless and non-corrosive cure system
 One-part product
 Resistant to ozone
 Excellent stability through wide range of temperatures: -50°C to 150°C
 The cured product exhibits excellent weathering characteristics, and a high resistance
to ultra-violet radiation heat and humidity
 High tensile strength makes it ideally suited for structural bonding applications

Applications  DOWSIL™ 895 Structural Glazing Sealant is a one-part silicone sealant used for
structural glazing.

Typical Properties
Specification Writers: These values are not intended for use in preparing specifications.

Test1 Property Unit Result

As supplied
Specific gravity 1.43
Slump or flow mm 0
Tack-free time (25°C, 50% R.H.) minutes 60
Cure schedule (25°C, 50% R.H.)
After 24 hours mm 2.2
After 72 hours mm 3.5
(See also Optimal Glazing Conditions)
As cured - after 7 days at 25°C and 50% RH
ASTM D2240 Durometer hardness, Shore A points 38
ASTM D0412 Ultimate elongation % 600
ASTM D0412 Tensile strength, at 100% elongation MPa 0.7

1. ASTM: American Society for Testing and Materials.

ISO: International Standardization Organization.

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DOWSIL™ 895 Structural Glazing Sealant

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Typical Properties (Cont.)

Test Property Unit Result

ASTM D0412 Tensile strength, at ultimate elongation MPa 2.85
ASTM D624 Tear strength kN/m 19
H-piece testing
ISO 8339 Ultimate elongation % 260
ISO 8339 Tensile strength MPa 1.06
ISO 8339 Young modulus MPa 1.0
Sealant dynamic design load Pa 140,000
Sealant static design load Pa 7,000
Service temperature range °C -50 to +150
Working time minutes 15

Description DOWSIL™ 895 Structural Glazing Sealant is a one-part neutral curing silicone sealant
designed specifically for the structural bonding of glass, metal, and other building
components.

It can also be used to adhere stiffening elements to building panels and for other similar
adhesive applications.

Neutral alkoxy cures at room temperature on exposure to water vapor in the air, giving off a
small amount of methanol.

Technical DOWSIL™ 895 Sealant exhibits a high level of physical properties and adhesive
Specifications and performances which are retained even after aging as detailed by EOTA (Ref: INV
96/BE.35).
Standards
CE Marked (ETA 01/0005) as structural glazing sealant component according to ETAG002,
the European Technical Guidelines for structural glazing with a level of attestation of 1.
(external quality audit) valid in all EC countries.

Meets structural glazing sealant requirements according to PrEN13022, SNJF VEC and Vi-
VEC.

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow

DOWSIL™ 895 Structural Glazing Sealant

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Technical Specifications and Standards (Cont.)

Regulation or protocol Conclusion Version of regulation or protocol

French VOC régulations A+ Regulation of March and May 2011 (DEVL1101903D and DEVL1104875A)
French CMR components Pass Regulation of April and May 2009 (DEVP0908633A and DEVP0910046A)
Italian CAM Edilizia Pass Decree 11 January 2017 (GU n.23 del 28-1-2017)
AgBB/ABG Pass Anforderungen an bauliche Anlagen bezOglich des Gesundheitsschutzes
(ABG), Entwurf 31.08.2017/August 2018 (AgBB)
Belgian Regulation Pass Royal decree of May 2014 (C-2014/24239)
EMICODE EC1 Plus April 2019
Indoor Air Comfort Pass Indoor Air Comfort 6.0 of February 2017
Indoor Air Comfort GOLD Pass Indoor Air Comfort GOLD 6.0 of February 2017
Blue Angel (DE-UZ 123) Pass DE-UZ 123 for "Low-Emission Sealants for Interior Use", (January 2019)
BREEAM International Exemplary lvl BREEAM International New Construction v2.0 (2016)
BREEAM Norway Pass BREEAM-NOR New Construction v1.2 (2019)
CDPH Pass
M1 Pass

Installation For structural glazing use, DOWSIL™ 895 Sealant should be factory-applied. Factory
application helps ensure optimal sealing conditions and performance. Job-site application
should only be carried out for remedial work, or when the glazing design does not allow
otherwise.

This adhesive meets European Standard for structural glazing application the EOTA
guidelines for SSGS.

Joint Design
As a general rule, structural sealant joints made with DOWSIL™ 895 Sealant should have a
width between 6 mm and 15 mm. However, the exact width is determined by the structural
calculations. The width (dimension y) of the structural sealant joint should also be calculated
to accommodate thermal and dynamic movements but as a rule should not be less than 6
mm.

Accessory Selection
The appropriate selection of all accessories such as setting blocks and backing materials is
of primary importance in avoiding discoloration or adhesion-related problems due to
incompatibility. Dow will also assess the suitability of proposed accessory materials as part
of the standard testing services. Closed cell polyethylene foam is the recommended backer
material for most joints. Silicone-based setting blocks are generally recommended for best
compatibility.

Some typical examples of joint designs are shown in Figures 2–5 on page 6.

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow

DOWSIL™ 895 Structural Glazing Sealant

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Installation (Cont.) Optimal Glazing Conditions
Ideally, all glazing should be done in factory and within the following conditions of
temperature and humidity:

Temperature conditions: 5°C to 40°C

Humidity conditions: 40% to 95%

Recommended temperatures range: from 15°C to 30°C

Figure 1: Humidity cure envelope for DOWSIL™ 895 Sealant.

Any combination of the above conditions will ensure a cure schedule sufficient to allow
transportation of the glazed modules within 21 days, depending on joint configuration.
Consult technical services for specific advice.

Preparatory Work
Clean all joints and glazing pockets, removing all contaminants such as grease, oil, dust,
water, frost, surface dirt, old sealant, or glazing compounds and protective coatings. Metal,
glass and plastic surfaces should be cleaned by mechanical or solvent procedures. Where
used, solvent should be wiped on and off with clean, oil and lint free cloths.

Priming
Priming is not usually required when using DOWSIL™ 895 Sealant. However, it is essential
that adhesion be tested prior to use. Specific primer recommendations will be on a project
basis. Please contact technical service for further advice.

Masking and Tooling

Areas adjacent to joints may be masked to ensure a neat sealant line. Do not allow masking
tape to touch clean surfaces to which the sealant is to adhere. Tooling should be completed
in one continuous stroke within 5 minutes after sealant application. Masking tape should be
removed immediately after tooling.

Application Method
Install the backing material, setting blocks and spacer tapes as specified. Apply DOWSIL™
895 Sealant in a continuous operation using positive pressure to properly fill and seal the
joint. Tool the sealant with slight pressure to spread it against the backing material and the
joint surfaces. A tool with a concave profile is recommended to keep the sealant within the
joint.

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow

DOWSIL™ 895 Structural Glazing Sealant

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Maintenance No maintenance is needed. If sealant becomes damaged, replace damaged portion.

DOWSIL™ 895 Sealant will adhere to compatible cured silicone sealants which exhibits a
clean knife-cut or abraded surface.

Handling PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED IN
Precautions THIS DOCUMENT. BEFORE HANDLING, READ PRODUCT AND SAFETY DATA SHEETS
AND CONTAINER LABELS FOR SAFE USE, PHYSICAL AND HEALTH HAZARD
INFORMATION. THE SAFETY DATA SHEET IS AVAILABLE ON THE DOW WEBSITE AT
DOW.COM, OR FROM YOUR DOW SALES APPLICATION ENGINEER, OR
DISTRIBUTOR, OR BY CALLING DOW CUSTOMER SERVICE.

Usable Life and When stored at or below 30°C in the original unopened containers, DOWSIL™ 895
Storage Structural Glazing Sealant has a usable life of 12 months from the date of production.

Packaging This product is available in 250 kg drums, 20 liter pails, 310 ml cartridges (12 per box) and
Information 600 ml sausages.

Limitations DOWSIL™ 895 Sealant should not be used for structural applications without the prior
written approval of Dow Construction Industry Technical Services Department. Each project
should be specifically and separately approved by Dow.

This product is neither tested nor represented as suitable for medical or pharmaceutical
uses.

Health and To support customers in their product safety needs, Dow has an extensive Product
Environmental Stewardship organization and a team of product safety and regulatory compliance
specialists available in each area.
Information
For further information, please see our website, dow.com or consult your local Dow
representative.

Disposal Dispose in accordance with all local, state (provincial) and federal regulations. Empty
Considerations containers may contain hazardous residues. This material and its container must be
disposed in a safe and legal manner.

It is the user’s responsibility to verify that treatment and disposal procedures comply with
local, state (provincial) and federal regulations. Contact your Dow Technical Representative
for more information.

Product Dow has a fundamental concern for all who make, distribute, and use its products, and for
Stewardship the environment in which we live. This concern is the basis for our product stewardship
philosophy by which we assess the safety, health, and environmental information on our
products and then take appropriate steps to protect employee and public health and our
environment. The success of our product stewardship program rests with each and every
individual involved with Dow products - from the initial concept and research, to
manufacture, use, sale, disposal, and recycle of each product.

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow

DOWSIL™ 895 Structural Glazing Sealant

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Customer Notice Dow strongly encourages its customers to review both their manufacturing processes and
their applications of Dow products from the standpoint of human health and environmental
quality to ensure that Dow products are not used in ways for which they are not intended or
tested. Dow personnel are available to answer your questions and to provide reasonable
technical support. Dow product literature, including safety data sheets, should be consulted
prior to use of Dow products. Current safety data sheets are available from Dow.

Typical Examples of Joint Design

Figure 2: System for 2-sided Figure 2A: Transom detail. Figure 2B: A mullion detail.
structural glazing. Examples of structural glazing designs:
2-sided design (installed on site).

Figure 3: System for 4-sided Figure 3A: Transom detail. Figure 3B: A mullion detail.
structural glazing. Examples of structural glazing designs:
4-sided design (factory glazed).

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow

DOWSIL™ 895 Structural Glazing Sealant

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Typical Examples of Joint Design (Cont.)

Legend:
1. Insulating glass unit
2. Silicone structural seal (DOWSIL™ 895
Structural Glazing Sealant)
3. Silicone sealant spacer block
4. Silicone setting block
5. Aluminum profile
6. Backer rod
7. Structural sealant width
8. Structural sealant bite
9. Weatherseal dimension
10. Silicone weatherseal (DOWSIL™ 791 Silicone
Weatherproofing Sealant)
11. Silicone insulating glass seal (DOWSIL™ 3362
Insulating Glass Sealant)

Figure 4: Design with supported Figure 5: Design with stepped

insulating glass unit. insulating glass unit.

dow.com NOTICE: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use conditions and
applicable laws may differ from one location to another and may change with time, Customer is responsible for determining
whether products and the information in this document are appropriate for Customer's use and for ensuring that Customer's
workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown
in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made
may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document.
References to "Dow" or the "Company" mean the Dow legal entity selling the products to Customer unless otherwise expressly
noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.

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