The installation kit contains the following components:

• DOWSIL™ 791 Weatherproofing Silicone Sealant
• Structural Glazing Tape – 9.5mm Thick (7.5m Rolls)

DOWSIL™ 791 Weatherproofing Silicone Sealant is a one-part, low-modulus, neutral-curing weatherproofing silicone sealant designed for both commercial and domestic applications. It provides excellent unprimed adhesion to most porous and non-porous surfaces.

Colours

Grey | Brown | Black  | Anthracite | Bronze
Buff | Limestone  | Stone | Translucent | White

Technical Information

Application

Surface Preparation

Ensure that surfaces to be sealed are clean, dry, sound and grease-free. Clean non-porous surfaces with DOWSIL™ R-40 Universal Cleaner, and dry thoroughly with a clean, lint-free cloth before application of sealant. Porous substrates such as concrete, brickwork, mortar etc. must be mechanically cleaned of loose particles using a steel brush, sanding disc or any similiar means.

Application Instructions

Apply sealant to the desired area using a sealant gun. Once finished, the joint should be tooled within 5 minutes of application to ensure good adhesion. For an extensive list of application methods, please consult the Technical Data Sheet.

Clean up

Excess sealant may be cleaned off tools and non-porous surfaces whilst in an uncured state using DOWSIL™ R-40 Universal Cleaner. If sealant is misapplied to porous substrates, it should be left until it is just cured and then removed by peeling, cutting or other mechanical means. Care should be taken not to damage plastic or coated surfaces.

Structural Glazing Tape – 9.5mm Thick (7.5m Rolls)

Double-sided high-tack acrylic adhesive-coated PVC structural spacer glazing tape. This tape is designed for use in structural spacer systems and features an open-cell structure that allows curing of structural silicones on all sides. Fast recovery from compression.

Colour

• Black / Grey (by special order)

Tested to ASTM E96-2005 water vapour transmission to determine open cell airflow structure

General characteristics value standard

Adhesive Specification: OPEN FACE

Test

Adhesive Specification: CLOSED FACE

Technical Data

Carrier:

 

None

 

Release Liner:

 

Filmic Liner: 150 mic at sizes up to 8mm, 80 mic at 9.5mm and 12mm

 

Adhesive:

 

Pure acrylic

 

Adhesive strength:

 

1 minute 14N/25mm

 

(FINAT TM 1-adhesion of polyester 50 um against stainless steel):

 

20 minutes 16N/25mm 24 hours 21 N/ 25mm

 

Resistance to chemicals:

 

When correctly applied, resistant against most solvents, mineral oils, fuels, aliphatic solvents, dilute acids, salts and alkalis.

 

Application temperature:

 

>15°C

 

Shelf life:

 

1 year (at 20°C and 50% relative humidity)

Flammability

This product is made up of PVC foam coated on both sides with an adhesive. It has not been tested for flammability, but can be considered self-extinguishing due to the nature of the components. However, it should be noted that any smoke created would be highly toxic and would emit Hydrogen Cyanide gas during and after burning.

Note

All Technical data is based on average values. By nature of its manufacture, all foam specifications can vary by 10%. Statements, technical information and recommendations contained herein are based on tests we believe to be reliable. The user shall determine the suitability of the product for their/intended use, and the User assumes all risk and liability whatsoever in connection with her/his use.

Products are manufactured to stringent quality standards.
To date, no known failures have occurred due to the premature ageing of this product.