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Sealant Calculator
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SA Contractors Silicone Sealant is a 100% acetic curing adhesive engineered for rapid-set glazing and industrial weatherproofing in high-exposure environments. Operating from -62°C to 180°C, this non-slump formula maintains structural integrity against intense UV radiation and temperature extremes in commercial shopfronts and HVAC units.
To prevent bond failure, degrease surfaces with white spirits or mechanical cleaning, avoiding soaps that interfere with adhesion. Ensure long-term joint flexibility by installing a polyethylene closed-cell foam rod to achieve the correct width-to-depth ratio and prevent three-sided adhesion. Bead the sealant into the joint and tool within a strict 5-minute window for a professional finish.
Note that this acetoxy system will chemically attack concrete, marble, and galvanized steel; for these substrates, a neutral cure alternative is required.
Frequently Asked Questions About SA Contractors Silicone Sealant
Q: What is the cure time for SA Contractors Silicone Sealant?
A: The cure time is 5-7 days for a 10mm bead at 25°C (77°F) and 50% relative humidity.
Q: Can SA Contractors Silicone Sealant be used outdoors?
A: Yes, it offers excellent weathering and UV resistance, making it suitable for outdoor applications.
Q: What surfaces can SA Contractors Silicone Sealant be used on?
A: It has excellent adhesion to glass, wood, ceramics, aluminum, and many plastics.
Q: How should I prepare surfaces before applying SA Contractors Silicone Sealant?
A: Surfaces must be clean, dry, and free of dirt, grease, oil, rust, and water. Use white spirits or mechanical cleaning with a lint-free cloth.
Q: Is SA Contractors Silicone Sealant paintable?
A: No, this sealant cannot be painted, as paint will not adhere to it.
Use SA Contractors Silicone Sealant for:
- Standard glazing of frames, panels, and shop fronts.
- Sealing environmental and refrigerated rooms.
- Sheet metal skylights, ventilators, and air-conditioning units.
- Assembly of metal/plastic signs.
- Weatherproofing.
- Forming in-place gaskets.
Why Use SA Contractors Silicone Sealant:
- Fast curing and strong adhesion.
- Excellent weatherability and UV resistance.
- Versatile for various sealing and glazing applications.
- Easy application with non-slump formula.
- Long-lasting performance.
How to apply SA Contractors Silicone Sealant:
- Surface Preparation: Ensure surfaces are clean, dry, and free from contaminants.
- Application: Cut nozzle at 45-degree angle, apply with sealant gun, and tool within 5 minutes.
- Backing Material: Use approved backing material for joints over 10mm deep.
- Cleaning: Clean uncured sealant with mineral turpentine. Remove masking tape before sealant skins over.
SA Contractors Silicone Sealant limitations:
- Not recommended for use with concrete, marble, galvanized steel, or lead surfaces.
- Not for fixing mirrors without manufacturer's approval.
- Not suitable for submerged joints or aquarium manufacturing.
- Cannot be painted.
- Not for use on some laminated glass or certain rubber products where plasticizer bleeding may occur.
Safety precautions when using SA Contractors Silicone Sealant:
- Ventilation: Use in a well-ventilated area.
- Avoid Contact: Avoid breathing vapor and contact with skin, eyes, and mouth.
- Eye Protection: If in eyes, flush with water for 15 minutes and seek medical attention.
- Hand Protection: Remove sealant from fingertips before handling contact lenses.
- General: Keep out of reach of children. Refer to MSDS for detailed safety information.
SA Contractors Silicone Sealant can be used on the following substrates:
- Glass
- Wood
- Ceramics
- Aluminum
- Many Plastics
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