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Sika Sikaflex 1A White 20oz Sausage 91008
Sikaflex-1A White is a moisture-cured non-sag polyurethane in a 20 oz sausage. It seals joints up to 1/2 inch, including green and damp concrete, and bonds without a primer on most substrates.
- White 20 oz sausage for joints up to 1/2 inch
- Paintable after a 7-day cure with water-, oil-, or rubber-based paints
- Damp concrete can be sealed 1 hour after standing water is gone
$12.13
Availability:
In stock
( 645 Available )
Sikaflex-1A White
Sikaflex-1A is a moisture-cured non-sag polyurethane joint sealant. This White 20 oz sausage (part 91008) is for joints up to 1/2 inch, including green and damp concrete. It holds plus or minus 35% movement and bonds without a primer on most substrates. White tends to yellow slightly in ultraviolet light, so pick this color for a white match knowing UV will shift it.
Key Features
- Moisture-cured 1-component non-sag polyurethane
- White 20 oz sausage, part 91008
- White tends to yellow slightly in UV
- Paintable after a 7-day cure
- Certified to NSF/ANSI/CAN 61 for potable water
- Bonds to most construction materials without a primer
Applications
- White perimeter joints used on windows and doors
- Green and damp concrete joints
- Potable-water joints after NSF 61 service is confirmed
- Paintable joints after a 7-day cure
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikaflex-1A |
| Part no. | 91008 |
| Unit | 20 oz sausage |
| Color | White |
| Movement | +/- 35% (ASTM C719) |
| Tack-free | 3 to 6 hours at 73 F |
| Paint wait | 7 days |
| NSF | NSF/ANSI/CAN 61 |
| Application temperature | 40 F to 100 F |
Product documents: Sikaflex-1A Product Data Sheet (PDF)
Frequently Asked Questions
What UV yellowing does Sikaflex-1A White show?
White tends to yellow slightly when exposed to ultraviolet rays. Light colors can also yellow in front of a direct gas-fired heating element.
What size is Sikaflex-1A White?
The sausage is 20 oz (600 ml), part 91008.
What movement class is Sikaflex-1A White versus Sikaflex-15 LM?
1A is Class 35 (plus or minus 35%). 15 LM is the higher-movement, low-modulus grade when the joint needs more than Class 35.
What paint window does Sikaflex-1A White have?
Water-, oil-, and rubber-based paints after a 7-day cure. Compatibility and adhesion tests are still required before coating.
What damp-concrete wait does Sikaflex-1A White need?
60 minutes after all standing water is displaced. Green concrete waits 24 hours after the pour at 75 F.
What NSF approval does Sikaflex-1A White have?
Certified to NSF/ANSI/CAN 61 for potable water. Not for swimming pools or submerged work with strong oxidizers.
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