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Sika Sikaflex NP 1 Elastomeric Polyurethane Sealant, 10.1 oz
Regular price $156.00Orders start at $399 — combine any items to reach the minimum. Learn more
Sika Sikaflex NP 1 Elastomeric Polyurethane Sealant, 10.1 oz
Sika Sikaflex NP 1 is a one-component, gun-grade elastomeric polyurethane sealant for construction joints, supplied in 10.1 oz cartridges. It requires no mixing and typically no priming, bonds to concrete and masonry, and offers +/-35% joint movement capability. Two colors are offered on this page: Medium Bronze and Black.
Key Features:
- One-component formula: Requires no mixing, helping to reduce labor costs.
- No primer needed: Typically requires no priming on most construction materials, lowering installation costs.
- Flexible joints: Joint movement capability of +/-35% keeps moving joints weathertight.
- Easy gunning: Easy to gun and tool, speeding application and producing neater joints.
- Weather resistant: Weather resistant for long-lasting weathertight seals in all climates.
- Acoustical sealing: Seals perimeters and cut-outs in partition systems to help support high STC values.
- Color options: 12 standard colors are available across the line to match common substrates.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Sika |
| Sell unit | 1 cartridge, 10.1 oz (box/tube pack per variant) |
| Product line | Sikaflex NP 1 |
| Available colors | Medium Bronze, Black (12 standard colors in the line) |
| Available sizes | 10.1 oz |
| Material | Elastomeric polyurethane |
| Type | One-component, gun-grade, non-priming |
| Joint movement capability | +/-35% |
| Coverage per unit | 10.1 oz cartridge |
| Packaging | Cartridge; also available in ProPaks |
| Intended use | Construction joints, concrete and masonry, acoustical partition sealing |
Coverage & How Much You Need:
Each 10.1 oz cartridge yields a bead length that varies with joint width and depth; wider or deeper joints consume more sealant, so size joint dimensions to the cartridge before ordering.
Fit and Compatibility:
Bonds to many construction materials including concrete and masonry, typically without primer, and works in Sika roofing and wall joint details. A standard caulking gun is required (sold separately); ProPak sausage packaging uses appropriate ProPak guns.
Frequently Asked Questions (FAQ):
Q: What comes in the sell unit?
A: This page offers 10.1 oz cartridges; Medium Bronze is sold by the box (BX) and Black by the tube (TB), per the listed pack units.
Q: Do I need primer?
A: No primer is required for most construction materials; always follow the manufacturer's data sheet for specific substrates.
Q: How much joint movement can it handle?
A: It provides +/-35% joint movement capability.
Q: Does it need mixing?
A: No. It is a one-component sealant that requires no mixing.
Q: Can it be used as an acoustical sealant?
A: Yes. Sealing spaces around cut-outs and at partition perimeters helps reduce sound transmission and support high STC values.
Q: What colors are available?
A: This page lists Medium Bronze and Black; the line has 12 standard colors.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
NP 1 is a proven choice for expansion and control joints in concrete and masonry, and for perimeter sealing where +/-35% movement is expected. Tool the bead within its working time for a neat finish, and size joints to the manufacturer's width-to-depth guidance so the sealant can strain properly. Choose a cartridge color that matches the substrate to minimize visible weathering.
Uncured polyurethane sealant can irritate skin and eyes; wear gloves and eye protection and follow the safety data sheet.
Order Sika Sikaflex NP 1 Elastomeric Sealant in Medium Bronze or Black for weathertight, flexible joints.
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