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SA Contractors Silicone Sealant secures glass-to-frame glazing, shop fronts, and metal or plastic signage. It maintains a durable seal on surfaces exposed to fluctuating temperatures and outdoor weathering. Use it to weather-proof sheet metal skylights, ventilators, and air-conditioning units where long-term reliability is the priority.
No, SA Contractors Silicone is not recommended for use with concrete or marble. Its acetic cure chemistry can react with these and other sensitive substrates, potentially causing staining or adhesion issues. Refer to the product limitations for suitable applications.
SA Contractors Silicone skins in 5-10 minutes at 25°C and 50% relative humidity. Full cure for a 10mm deep joint takes 5-7 days under the same conditions. This allows for prompt tooling and quick initial protection.
No, this silicone sealant cannot be painted. Paint will not adhere correctly to the cured silicone surface. If a paintable finish is required, an alternative sealant product should be chosen.
Joint width and depth should be no less than 4mm. Maximum joint width should not exceed 25mm, with joint depths being half the width and a maximum of 10mm. Use a closed-cell polyethylene foam rod for backing or polyethylene tape as a bond breaker to control depth.
| Application | Key benefit | Primary trades |
|---|---|---|
| General purpose glazing of frames, panels, and shop fronts | Reliable, long-term weatherproofing with excellent UV resistance. | Glaziers, Builders |
| Sealing environmental and refrigerated rooms | Maintains sealed environments across a wide operating temperature range (-62°C to 180°C). | HVAC Technicians, Cold Room Installers |
| Sealing sheet metal, skylights, ventilators, and air-conditioning units | Forms durable seals on metal substrates, resisting weathering and UV degradation. | Sheet Metal Workers, HVAC Installers |
| Assembly of metal and plastic signs | Strong adhesion to common sign materials like aluminium and many plastics. | Sign Manufacturers, Installers |
| General external weatherproofing | Outstanding weatherability and ±25% joint movement capability for exposed applications. | Builders, Maintenance Contractors |
| Application | Key benefit | Primary trades |
|---|---|---|
| Commercial Glazing | Excellent adhesion to glass and aluminium frames. | Glaziers |
| HVAC & Sheet Metal | Seals skylights, ventilators, and air-conditioning units. | HVAC Technicians, Roofers |
| Sign Assembly | Bonds metal and plastic signs with high tensile strength. | Signage Contractors |
| Cool Room Construction | Operates effectively in environments from -62°C to 180°C. | Specialist Builders |
Warning
This product emits Acetic Acid during curing. Causes skin irritation and serious eye irritation.
Wear safety shoes, overalls, nitrile gloves, and safety glasses. Always wash hands before eating, drinking, or using the toilet.
Use in a well-ventilated area and avoid breathing in vapour during application and cure.
Store in a cool, dry, well-ventilated place, out of direct sunlight, and away from foodstuffs. Keep containers closed when not in use. Shelf life is 12 months if stored below 25°C. Dispose of material and containers in accordance with local regulations.
Proper substrate preparation is critical for long-term adhesion and performance. Ensure all surfaces are clean, dry, and free from contaminants.
Surface prep: 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. Do not use soap or detergent. For plastics, contact Sealants Australasia for specific cleaning solvent recommendations. For remedial work, completely remove all existing sealant.
Primer: Optional for specific surfaces. Allow any primer to dry fully before sealant application. Test adhesion if unsure of substrate compatibility or primer requirement.
| Property | Value |
|---|---|
| Cure Method | Acetoxy |
| Colours | Translucent, White, Black |
| Sag/Slump | Non-Slump (0.1%) |
| Hardness (ASTM D2240) | 28 Shore A |
| Tensile Strength | 1.7 MPa |
| Dynamic Joint Movement | ±25% |
| Skin Time @25°C/50% RH | 5-10 min |
| Cure Time 10mm @25°C/50% RH | 5-7 Days |
| Operating Temperature | -62°C to 180°C |
| Specific Gravity | 1.04 |
| VOC Compliance | 5 Star VOC Compliant |
Here are some common examples on where SA Contractors Silicone Sealant used by our customers.
