DOWSIL™ 795 Silicone Building Sealant

DOWSIL™ 795 Silicone Building Sealant is a one-part, neutral-cure, architectural-grade sealant that easily extrudes in any weather and cures quickly at room temperature. This cold-applied, non-sagging silicone material cures to a medium modulus silicone rubber upon exposure to atmospheric moisture. The cured sealant is durable and flexible enough to accommodate ± 50% movement of the original joint dimension when installed in a properly designed weather seal joint. In a properly designed structurally glazed joint, the sealant is strong enough to support glass and other panel materials under high wind load.

Packaging: 600ml sausage

Colour: Black

Applications:

• Structural and nonstructural glazing
• Structural attachment of many panel systems
• Panel stiffener applications
• Weather sealing of most common construction materials including glass, aluminium, steel, painted metal, EIFS, granite and other stone, concrete, brick and plastics

Limitations: DOWSIL™ 795 Silicone Building Sealant should not be used:

• In structural applications without prior review and approval by your local sales application engineer
• In below-grade applications When surface temperatures exceed 50°C during installation
• On surfaces that are continuously immersed in water
• On building materials that bleed oils, plasticizers or solvents that may affect adhesion
• On frost-laden or wet surfaces
• In totally confined joints (the sealant requires atmospheric moisture for cure)
• If the sealant is intended to be painted (paints do not typically adhere to most silicone sealants)
• To surfaces in direct contact with food or other food-grade applications
• This product is neither tested nor represented as suitable for medical or pharmaceutical uses

How to use:

1. Preparetion

Clean all joints, removing all foreign matter and contaminants such as grease, oil, dust, water, frost, surface dirt, old sealants or glazing compounds and protective coatings.

2. Application Method

Install backing material or joint filler, setting blocks, spacer shims and tapes. Mask areas adjacent to joints to ensure neat sealant lines. Primer is generally not required on nonporous surfaces but may be necessary for optimal sealing of certain porous surfaces. A test placement is always recommended. Apply DOWSIL™ 795 Silicone Building Sealant in a continuous operation using positive pressure. (The sealant can be applied using many types of air-operated guns and most types of bulk dispensing equipment.) Before a skin forms (typically within 15 minutes), tool the sealant with light pressure to spread the sealant against the backing material and joint surfaces. Remove masking tape as soon as the bead is tooled.