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NPC Co-Poly Caulk 10.3 oz Cartridge – Co-Polymer Rubber Siding & Window Sealant, Multiple Colors
Regular price $11.55Orders start at $399 — combine any items to reach the minimum. Learn more
NPC Co-Poly Caulk 10.3 oz Cartridge – Co-Polymer Rubber Siding & Window Sealant, Multiple Colors
NPC Co-Poly Caulk is a 10.3 oz cartridge sealant built on blocked co-polymer rubber chemistry with strong adhesion and excellent weathering for residential remodeling and new construction. It seals right-angle joints on vinyl, fiber-cement, metal and wood siding, windows and doors. One cartridge is the sell unit, stocked in 15 colors to match common siding and trim finishes.
Key Features:
- Co-polymer rubber: Formulated on blocked co-polymer rubber chemistry for durable weathering performance.
- Strong adhesion: Delivers strong adhesion to siding, windows and doors per the manufacturer.
- Wide substrate fit: Seals right-angle joints on vinyl, fiber-cement, metal and wood siding.
- Broad application range: Can be applied at substrate temperatures from 0°F to 125°F.
- 15 stocked colors: Available in 15 colors including White, Black, Colonial Red, Musket Brown and Slate Gray.
- Made in America: American manufactured and owned.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | NPC |
| Sell unit | 1 cartridge, 10.3 oz (TB) |
| Product line | NPC Co-Poly Caulk |
| Available colors | 53 White, 34 Colonial Red, 31 Black, 147 Blue Mist, 87 Bronze, 78 Heritage Cream, 42 Grecian Green, 172 Ct Merino Tan, 39 Musket Brown, 33 Royal Brown, 73 Pacific Blue, 63 Terratone, 158 Brandywine, 38 Cypress, 134 Slate Gray |
| Available sizes | 10.3 oz cartridge |
| Material | Blocked co-polymer rubber sealant |
| Intended use | Sealing right-angle joints on vinyl, fiber-cement, metal and wood siding, windows and doors |
| Application temperature | 0°F to 125°F substrate range |
| Construction type | Residential remodeling and new construction |
Coverage & How Much You Need:
Coverage per cartridge is not stated in the sources; linear footage depends on joint width and depth. Order one cartridge per joint run calculated by the bead size you tool.
Fit and Compatibility:
Designed for use with vinyl, fiber-cement, metal and wood siding, plus windows and doors. For a higher-grade sealant with even better weatherability, the manufacturer points to NPC Solar Seal Ter-Polymer.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One 10.3 oz cartridge of NPC Co-Poly Caulk in the color you select.
Q: Which color should I choose?
A: Co-Poly is stocked in 15 colors to match common siding and trim finishes; pick the color code closest to your siding or gutter color.
Q: What surfaces does it bond to?
A: It is designed for right-angle joints on vinyl, fiber-cement, metal and wood siding, and around windows and doors.
Q: Can I apply it in cold weather?
A: The stated substrate application range is 0°F to 125°F, so cold-weather application is possible within that window.
Q: Is there a stronger option?
A: Yes, the manufacturer notes NPC Solar Seal Ter-Polymer as a higher-grade sealant with even better weatherability.
Q: Where is it made?
A: Co-Poly is American manufactured and owned.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Match the cartridge color to your siding, trim or gutter finish for invisible joints at corners, window perimeters and door casings. Tool the bead within the working time for a clean right-angle joint, and avoid stretching the sealant in thin skins. In high-exposure or roof-adjacent detail work, step up to NPC Solar Seal Ter-Polymer for added weatherability.
Sealants emit vapors while curing; use in ventilated areas and keep uncured material off skin and out of eyes.
Order NPC Co-Poly Caulk in your matching color today and seal siding and window joints with confidence.
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