DowSil 895 Structural Glazing Sealant

DowSil^TM 895 Structural Glazing Sealant is a one component silicone sealant used for structural glazing.

Specification writers: These values are not intended for use in preparing specifications. Please contact your local Dow sales office or your Global Dowsilg Connection before writing specifications on this product.

DowSil^TM 895 Sealant exhibits a high level of physical properties and adhesive performances which are retained even after aging as detailed by EOTA (Ref: INV 96/BE.35).

CE Marked (ETA 01/005) 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.

For structural glazing use, DowSil^TM 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^TM 895 Sealant should have a width between 6mm and 15mm. However, the exact width is determined by the structural calculations. The width (dimension y) of the structural sealant joint should also be calculated to accomodate thermal and dynamic movements but as a rule should not be less than 6mm.

Accessory selection

The appropriate selection of all accessories such as setting blocks and backing materials is of primary importance in avoiding discolouration or adhesion-related problems due to incompatibility. DowSil^TM 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 and 5.

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 Dow Corning 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 DowSil^TM 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^TM 895 Sealant. However, it is essential that adhesion be tested prior to use. Specific primer recommendations will be made by DOWSIL Technical Services Department on a project basis. Please contact DOWSIL 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 a specified.

Apply DowSil^TM 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.

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

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

Your DOWSIL contact details (e-mails): 

Technical inquiries: [email protected]

Marketing: construction.marketing@ dowcorning.com

Quality Bond: [email protected]

EHS inquiries: [email protected]

Reach inquiries: [email protected]

Your Technical Service contact details (phone): 

Toll Free Numbers: 

From Belgium +0800 80 522

From France +0805 54 04 39

From Germany +0800 52 50 258

From Italy +800 92 83 30

From Spain +900 813161

From United Kingdom +0800 9172 071

All other countries: 

For English +32 64 51 11 59

For French +32 64 51 11 59

For German +49 611 237503

For Italian +32 64 51 11 73

For Spanish +32 64 51 11 66

For Russian +7 495 725 43 19

Fax number from all countries: +32 64 88 86 86

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 website at dowcorning.com, or from your dow sales application engineer, or distributor, or by calling dow customer service.

When stored at or below 30°C in the original unopened containers, DowSil^TM 895 Sealant has a usable life of 12 months from the date of production. 

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

DowSil^TM 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.

To support Customers in their product safety needs, Dow has an extensive Product Stewardship organization and a team of Product Safety and Regulatory Compliance (PS&RC) specialists available in each area.

For further information, please see our website, dowcorning.com or consult your local Dow representative.

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’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.

DOW SPECIFICALLY DISCLAIMS ANY OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY. 

DOW DISCLAIMS LIABILITY FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES. 

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consumer.dow.com

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