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Sika Sikaflex 1A White 10oz 91017
Sikaflex-1A White is a moisture-cured non-sag polyurethane sealant in a 10.1 oz cartridge, part 91017. Crews seal joints to 1/2 inch deep, including green and damp concrete.
- Tack-free in 3 to 6 hours at standard conditions
- Holds plus or minus 35% joint movement in service
- Resists jet fuel after the sealed joint reaches full cure
$6.61
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Sikaflex-1A White - 10 Oz Cartridge
Sikaflex-1A White is a premium-grade, moisture-cured, one-component, non-sag polyurethane sealant in a 10.1 oz cartridge, part 91017. Crews use it in joints no deeper than 1/2 inch, including windows, door frames, reglets, flashing, and common roofing details. It bonds to green concrete 24 hours after the pour and to damp concrete 60 minutes after standing water is gone.
Key Features
- Moisture-cured one-component non-sag polyurethane
- Bonds to green concrete 24 hours after the pour
- Bonds to damp concrete 60 minutes after standing water is gone
- Tack-free in 3 to 6 hours at 73 F and 50% RH
- Holds plus or minus 35% joint movement
- Jet fuel resistant and NSF/ANSI/CAN 61 potable-water certified
Applications
- Windows, door frames, reglets, and flashing
- Common roofing detail joints
- Vertical and horizontal joints to 1/2 inch deep
- Green and damp concrete joints
- Canal and reservoir joints after a 7-day cure
Technical Specifications
| Property | Value |
|---|---|
| Tack-free | 3 to 6 hours (73 F / 50% RH) |
| Final cure | 4 to 7 days (73 F / 50% RH) |
| Green concrete | 24 hours after pour |
| Damp concrete | 60 minutes after standing water |
| Joint depth | 1/4 to 1/2 inch |
| Movement | Plus or minus 35% (ASTM C719) |
| Application temperature | 40 to 100 F |
| Paint or immersion | 7 days at standard conditions |
| ASTM C920 | Type S, Grade NS, Class 35 |
| Shelf life, cartridge | 15 months |
Product documents: Sikaflex-1A Product Data Sheet (PDF)
Frequently Asked Questions
What joints use Sikaflex-1A White - 10 Oz Cartridge?
Joints where sealant depth stays between 1/4 and 1/2 inch, including windows, door frames, reglets, flashing, common roofing details, vertical and horizontal work, and canal or reservoir joints after a 7-day cure.
What ultraviolet yellowing does Sikaflex-1A White - 10 Oz Cartridge show?
White tends to yellow slightly when exposed to ultraviolet rays. Light colors can also yellow if exposed to a direct gas-fired heating element.
What application temperature does Sikaflex-1A White - 10 Oz Cartridge allow?
Recommended application temperatures are 40 to 100 F. Condition units at 65 to 75 F before use, and use opened units the same day.
What green-concrete wait does Sikaflex-1A White - 10 Oz Cartridge need?
Green concrete is ready 24 hours after the pour, with a minimum of 24 hours at 75 F. Control joints should be cut at least 8 hours before sealing, and expansion forms should be removed at least 4 hours before sealing.
What paint and immersion wait does Sikaflex-1A White - 10 Oz Cartridge need?
Allow 7 days at standard conditions before overcoating or total water immersion. It is paintable with water-, oil-, and rubber-based paints after that wait; run a compatibility test on the paint system.
What Class 35 movement capability does Sikaflex-1A White - 10 Oz Cartridge provide?
Plus or minus 35% joint movement under ASTM C719, meeting ASTM C920 Type S, Grade NS, Class 35. Joints that need Class 100 movement capability belong with Sikaflex-15 LM instead of this Class 35 grade.
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