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Sika Sikaflex NP 2 Limestone 1.5 Gallon
Sikaflex NP 2 is a multi-component non-sag polyurethane sealant in a Limestone 1.5 gallon unit for interior and exterior expansion joints. It holds ±50% movement and a working time of approximately 1.5 to 2.5 hours at 73 F.
- Multi-component non-sag polyurethane with ±50% movement
- Working time approximately 1.5 to 2.5 hours at 73 F
- ASTM C 920 Type M, Grade NS, Class 50
$69.23
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Out of stock
Sikaflex NP 2
Sikaflex NP 2 is a multi-component, highly flexible, non-priming polyurethane sealant tested for ±50% joint movement. This Limestone 1.5 gallon unit arrives in a 2 gallon pail, holds a working time of approximately 1.5 to 2.5 hours at 73 F, and meets ASTM C 920 Type M, Grade NS, Class 50. Use it for interior and exterior expansion joints, parking structures, storefronts, and precast panels, including damp concrete one hour after water exposure and green concrete 24 hours after the pour.
Key Features
- Multi-component highly flexible non-priming polyurethane sealant
- Movement capability ±50% per ASTM C 719
- Working time approximately 1.5 to 2.5 hours at 73 F
- Meets ASTM C 920 Type M, Grade NS, Class 50, Use NT, T, A, M, O, and I
- Applies to green concrete 24 hours after pour and damp concrete 1 hour after water exposure
- Suitable for water immersion with a 14-day cure at 70 F when primed
Applications
- Interior and exterior expansion joints
- Parking structures, storefronts, and precast panels
- Roofing, fascia, parapets, and vinyl siding joints
- Above-grade and below-grade joints, including immersed service when primed
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikaflex NP 2 |
| Color | Limestone |
| Unit | 1.5 gallon in 2 gallon pail |
| Chemistry | Multi-component non-sag polyurethane |
| Movement | ±50% |
| Working time at 73 F | Approximately 1.5 to 2.5 hours |
| Shore hardness 21 day | Approximately 25 |
| Elongation 7 day | Approximately 974% |
| Cure time | Approximately 3 days at 73 F |
Product documents: Sikaflex NP 2 Product Data Sheet (PDF)
Frequently Asked Questions
What joint jobs suit Sikaflex NP 2?
Interior and exterior expansion joints on parking structures, storefronts, precast panels, roofing, fascia, and parapets, above or below grade.
What movement capability does Sikaflex NP 2 hold?
±50% joint movement per ASTM C 719.
What working time should crews plan for Sikaflex NP 2 at 73 F?
Approximately 1.5 to 2.5 hours at 73 F, approximately 1 hour at 100 F, and approximately 3 hours at 40 F.
What ASTM class does Sikaflex NP 2 meet?
ASTM C 920 Type M, Grade NS, Class 50, Use NT, T, A, M, O, and I.
What early-concrete windows apply for Sikaflex NP 2?
It can go on green concrete 24 hours after the pour and on damp concrete 1 hour after water exposure.
What size is Sikaflex NP 2 Limestone?
The unit is 1.5 gallons in a 2 gallon pail, Limestone.
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