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Sika Sikaflex NP 1 Redwood Tan 20oz Sausage
Sikaflex NP 1 Redwood Tan is a one-component polyurethane in a 20 oz ProPak. It seals stucco and natural stone joints and typically bonds without a primer on concrete and masonry.
- Redwood Tan 20 oz ProPak, part 805578
- Stucco and natural stone moving joints
- UL classified for 4-hour fire joints with Ultra Block
$13.22
Availability:
Out of stock
Sikaflex NP 1 Redwood Tan 20 oz
Sikaflex NP 1 is a one-component moisture-curing polyurethane joint sealant. This Redwood Tan 20 oz ProPak (part 805578) is for stucco and natural stone joints. It holds plus or minus 35% movement and typically bonds without a primer on concrete and masonry. It is UL classified for 4-hour, 4-inch fire and hose-stream work with Ultra Block or mineral wool.
Key Features
- One-component moisture-curing polyurethane
- Redwood Tan 20 oz ProPak, part 805578
- Stucco and natural stone joints
- UL classified fire resistance with Ultra Block or mineral wool
- Peel after UV through glass (ASTM C794)
- Ready to place with a professional caulk applicator
Applications
- Stucco and natural stone joints
- Masonry and panel walls
- Interior and exterior joints above and below grade
- Fire-rated joints with Ultra Block or mineral wool
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sikaflex NP 1 |
| Part no. | 805578 |
| Unit | 20 oz ProPak |
| Color | Redwood Tan |
| Movement | +/- 35% (ASTM C719) |
| Fire | UL classified 4-hour 4-inch |
| Cure condition | 75 F and 50% RH |
| Shelf life | 18 months (sausage) |
| Pack | 20 ProPaks per carton |
Product documents: Sikaflex NP 1 Product Data Sheet (PDF)
Frequently Asked Questions
What size is Sikaflex NP 1 Redwood Tan 20 oz?
The ProPak is 20 oz (590 ml), part 805578.
What stucco work uses Sikaflex NP 1 Redwood Tan 20 oz?
Stucco and natural stone joints, plus masonry and panel walls. Interior or exterior, above or below grade.
What Ultra Block joint uses Sikaflex NP 1 Redwood Tan 20 oz?
UL classified fire resistance. It passes a 4-hour, 4-inch fire and hose-stream test with Ultra Block or mineral wool.
What sausage shelf life does Sikaflex NP 1 Redwood Tan 20 oz have?
18 months in the unopened ProPak. Cartridge shelf life is 15 months; this sausage is 18.
What cure condition does Sikaflex NP 1 Redwood Tan 20 oz assume?
Published skin and full-cure times assume 75 F and 50% RH in a 1/2 inch by 1/4 inch joint. Lower temperature and humidity extend cure.
What applicator does Sikaflex NP 1 Redwood Tan 20 oz use?
A professional caulk applicator. It comes ready to place, with no mixing on the joint.
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