TDS

Paintable Silicone Supreme Window & Door Sealant
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Technical Data Sheet
Revision: September 29, 2022
Supersedes: August 2020
Ref. #: 679043
Tools Typically Required:
Utility knife, caulking gun and tool to puncture cartridge seal.
Safety Precautions:
Wear gloves. Wash hands after use.
Surface Preparation:
• Surfaces must be clean and sound prior to application of the sealant. All contaminants, impurities, or other adhesion inhibitors
(such as frost, oils, old sealants, soaps, and other surface treatments, etc.) must be removed from the surfaces to which the
sealant is intended to adhere.
• For cleaning, a solvent-dampened clean rag usually produces the desired result. Isopropyl alcohol (IPA) is a commonly used
solvent that has shown to be effective with most non-porous substrates. When handling solvents, refer to manufacturer’s
SDS for information on handling, safety, and personal protective equipment. Cleaning of surfaces should be done within 1
to 2 hours of when the sealant is to be applied.
• Use backer rod for gaps deeper than ¼ inch. A width to depth ratio of 2:1 should be maintained.
• Architectural coatings, paints and plastics should be cleaned with a solvent approved by the manufacturer of the product, or
which does not harm or alter the finish.
• Since porous materials can absorb and retain moisture, it is important to confirm that substrates are dry prior to application
of the sealant.
Masking: The use of masking tape is recommended where appropriate to ensure a neat job and to protect adjoining surfaces
from over-application of sealant. Masking tape should be removed immediately after tooling the sealant and before the
sealant begins to skin over (tooling time).
Application:
• Cut nozzle to obtain desired bead size and pierce inner foil seal.
• Using a caulking gun, apply sealant in a continuous operation applying a positive pressure adequate to properly fill and seal
the seam, cavity or joint.
• Smooth or tool the sealant into gap within 15 minutes of application. Tool or strike the sealant with a concave tool, applying
light pressure to spread the material against the joint surfaces to ensure a void-free application.
• When tooling, use care not to spread the sealant over the face of the substrates adjacent to the joint or masking as Paintable
Silicone Supreme Window & Door sealant can be extremely difficult to remove from rough or porous substrates. Excess
sealant should be cleaned from glass, metal, and plastic surfaces while still uncured. On porous surfaces the excess sealant
should be allowed to progress through the initial cure or set-up. It should then be removed by abrasion or other mechanical
means.
• If sealant is applied when the temperature is below 40°F (4°C) or if frost or moisture is present on the surfaces to be sealed,
the rate of cure will slow. For standard cure speed, apply in temperatures above 40°F.
• The cure rate of this product is primarily dependent upon temperature and the availability of atmospheric moisture. Under
average conditions (relative humidity of 50 ±5% at an air temperature of 73.4 ±2°F [23 ±1°C]) this material can attain a cured
thickness of 2-3 mm per 24 hours (assuming ample access to atmospheric moisture). As temperature decreases, the cure
rate slows down (and vice versa). Low moisture environments will also reduce the cure rate. Near-confined spaces, which
limit the overall access to atmospheric moisture, sealant will cure only from that surface which has access to the atmosphere.
NOTE:
• Some materials that bleed plasticizers or oils can cause a discoloration on the surface of sealants. When sealing to or over
items such as: rubberized gaskets, bituminous based materials, butyl or oil-based products, oily woods, tapes, etc.,
compatibility testing prior to use is recommended.
• Silicone materials are hydrophobic in nature and if inadvertently over-applied onto adjacent joint surfaces (even if removed
immediately), can create a waterproofing effect of a substrate when the substrate is wet. See section on Masking.
• While Paintable Silicone Supreme Window & Door Sealant is generally considered a non-priming sealant, special
circumstances or substrates may require a primer. It is the user’s responsibility to test substrate compatibility, and the
adhesion of the cured sealant on a test joint before applying to the entire project.
• Customers must evaluate GE branded products and make their own determination as to fitness of use in their particular
application.
• In addition to the guidelines provided on this datasheet, Henkel Corporation recommends that designers and users of
Paintable Silicone Supreme sealant familiarize themselves with the latest editions of the following industry guidelines and
best practices:
1.) ASTM C1193 Standard Guide for Use of Joint Sealants.
DIRECTIONS