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Sika Sikaflex 1A Limestone 20oz Sausage 91007
Sikaflex-1A Limestone is a moisture-cured non-sag polyurethane in a 20 oz sausage. It seals joints up to 1/2 inch, including green concrete and immersion joints after a 1-week cure.
- Limestone 20 oz sausage for joints up to 1/2 inch
- Green concrete 24 hours after the pour
- 1-week cure before total water immersion
$12.13
Availability:
In stock
( 769 Available )
Sikaflex-1A Limestone
Sikaflex-1A is a moisture-cured non-sag polyurethane joint sealant. This Limestone 20 oz sausage (part 91007) is for joints up to 1/2 inch, including green and damp concrete and canal or reservoir joints after a 1-week immersion cure. It holds plus or minus 35% movement and bonds without a primer on most substrates. Full cure is 4 to 7 days at 73 F.
Key Features
- Moisture-cured 1-component non-sag polyurethane
- Limestone 20 oz sausage, part 91007
- SWRI validated to ASTM C719
- Green concrete 24 hours after pour
- Cure 4 to 7 days at 73 F
- Meets ASTM C920 Type S Grade NS Class 35
Applications
- Canal and reservoir joints after a 1-week immersion cure
- Green and damp concrete construction joints
- Windows, door frames, and flashing
- Vertical and horizontal joints placed from 40 F
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikaflex-1A |
| Part no. | 91007 |
| Unit | 20 oz sausage |
| Color | Limestone |
| Movement | +/- 35% (ASTM C719) |
| Shore A 21 day | 45 +/- 5 (ASTM C661) |
| Tack-free | 3 to 6 hours at 73 F |
| Cure | 4 to 7 days at 73 F |
| Immersion wait | 1 week |
Product documents: Sikaflex-1A Product Data Sheet (PDF)
Frequently Asked Questions
What immersion wait does Sikaflex-1A Limestone need?
A 1-week cure at standard conditions before total water immersion, including canal and reservoir joints. Primer is usually skipped except where testing or immersion calls for it.
What size is Sikaflex-1A Limestone?
The sausage is 20 oz (600 ml), part 91007.
What movement listing does Sikaflex-1A Limestone meet?
ASTM C920 Type S, Grade NS, Class 35, Use T, NT, O, M, A, I, and SWRI validated to ASTM C719. Federal TT-S-00230C Type II Class A also applies.
What joint design does Sikaflex-1A Limestone use?
2:1 width to depth. Minimum depth 1/4 inch, maximum 1/2 inch. Traffic joints hold 1/2 inch with closed-cell backer rod.
What green-concrete wait does Sikaflex-1A Limestone need?
24 hours after the pour at 75 F. Control joints are cut 8 hours before sealing; expansion-joint forms come off 4 hours before.
What cure time does Sikaflex-1A Limestone have?
4 to 7 days at 73 F and 50% RH. Tack-free is 3 to 6 hours; skin is up to 1/8 inch after 24 hours.
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