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Sika Sikaflex NP 1 Redwood Tan 10oz Cartridge
Sikaflex NP 1 Redwood Tan is a one-component polyurethane in a 10 oz cartridge. It seals panel walls and precast units and typically bonds without a primer on concrete and masonry.
- Redwood Tan 10 oz cartridge for panel walls and precast
- Plus or minus 35% movement without a primer
- Bond breaker stops three-point bonding in shallow joints
$7.93
Availability:
Out of stock
Sikaflex NP 1 Redwood Tan
Sikaflex NP 1 is a one-component moisture-curing polyurethane joint sealant. This Redwood Tan 10 oz cartridge is for panel walls and precast units. It holds plus or minus 35% movement and typically bonds without a primer to concrete and masonry. A polyethylene bond breaker stops three-point bonding where the joint is too shallow for backer rod, so the bead can move.
Key Features
- One-component moisture-curing polyurethane
- Redwood Tan 10 oz cartridge
- Plus or minus 35% movement (ASTM C719)
- Shore A 25 after heat aging, max Shore A 50
- Polyethylene bond breaker in shallow joints
- Joints designed to the SWR Institute sealant guide
Applications
- Panel walls and precast units
- Masonry, stucco, and natural stone
- Interior and exterior joints in all climates
- Above-grade and below-grade moving joints
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikaflex NP 1 |
| Unit | 10 oz cartridge |
| Color | Redwood Tan |
| Movement | +/- 35% (ASTM C719) |
| Shore A after heat | 25 (max 50) |
| Peel after UV | Passes ASTM C794 through glass |
| Joint design | SWR Institute sealant guide |
| Shelf life | 15 months (cartridge) |
Product documents: Sikaflex NP 1 Product Data Sheet (PDF)
Frequently Asked Questions
What size is Sikaflex NP 1 Redwood Tan?
The cartridge is 10 oz.
What panel-wall work uses Sikaflex NP 1 Redwood Tan?
Panel walls and precast units, plus masonry, stucco, and natural stone. Interior or exterior, above or below grade.
What Shore after heat aging does Sikaflex NP 1 Redwood Tan show?
Shore A 25 after heat aging, with a maximum Shore A of 50 (ASTM C661). Standard-condition hardness is 25-30.
What three-point bonding does Sikaflex NP 1 Redwood Tan allow?
None. Where joint depth will not take backer rod, a polyethylene bond-breaker strip keeps the bead off the joint bottom.
What joint guide does Sikaflex NP 1 Redwood Tan follow?
Joints designed in accordance with the SWR Institute Sealants professional guide. Depth at midpoint stays between 1/4 inch and 1/2 inch.
What peel after UV does Sikaflex NP 1 Redwood Tan pass?
ASTM C794 after UV radiation through glass, when immersion priming is followed. Concrete and aluminum for immersion take the matching Sikaflex primer.
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