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Sika Sikaflex-15 LM Polyurethane Sealant, 10.1 oz., Aluminum Gray or Colonial White
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Sika Sikaflex-15 LM Polyurethane Sealant, 10.1 oz., Aluminum Gray or Colonial White
Sikaflex-15 LM is a one-component, low-modulus, non-sag polyurethane elastomeric sealant supplied in a 10.1 oz. cartridge. It is made for moving joints in vertical and facade applications and bonds to similar and dissimilar materials. Two colors are offered: Aluminum Gray and Colonial White; pair with standard caulking equipment for joints in concrete, window and door frames, reglets and roofing details.
Key Features:
- Low modulus: Low modulus of elasticity allows the sealant to accommodate joint movement in vertical applications.
- One-component: Ready-to-use single-component formula eliminates mixing, equipment cleanup, time and waste.
- High movement capability: Well suited to high-rise and facade work where high movement capability is required.
- Multi-substrate bond: Adheres between similar as well as dissimilar materials.
- Standards listed: Meets ASTM C-920, Type S, Grade NS, Class 100/50, and Federal Specification TT-S-00230C, Type II, Class A.
- Fire-rated joints: Used in 2- and 3-hour UL Fire Rated Joint Systems including FF-S-0007 and FW-S-0015 designations.
- EIFS tested: Tested in accordance with ASTM C-1382 for use in EIFS systems.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Sika |
| Sell unit | 1 tube, 10.1 oz. |
| Product line | Sikaflex-15 LM |
| Available colors | Aluminum Gray, Colonial White |
| Available sizes | 10.1 oz. cartridge |
| Material | One-component polyurethane |
| Type | Non-sag elastomeric sealant, low modulus |
| Coverage standard | ASTM C-920, Type S, Grade NS, Class 100/50, use T, NT, G, A, O, M |
| Additional standards | TT-S-00230C Type II Class A; TT-S-001543A Type non-sag; ASTM C-1382 (EIFS) |
| Fire rating | 2- and 3-hour UL Fire Rated Joint Systems FF-S-0007, FF-S-0037, FW-S-0015, FW-S-0018, HW-S-0076, HW-S-0095, WW-S-0011, WW-S-0060 |
| Intended use | Moving joints in concrete panels, window and door frames, reglets, flashing and roofing details; high-rise facades |
Fit and Compatibility:
Works on concrete panel and wall systems, around window and door frames, reglets, flashing and common roofing detail applications, including EIFS per ASTM C-1382. Suitable between similar and dissimilar materials; use appropriate joint backing and primer per joint design.
Frequently Asked Questions (FAQ):
Q: What comes in an order?
A: One 10.1 oz. cartridge in the selected color, Aluminum Gray or Colonial White.
Q: Does it need mixing?
A: No. It is a one-component sealant that is ready to use, with no mixing equipment or cleanup.
Q: Where is it typically applied?
A: Joints in concrete panel and wall systems, around window and door frames, reglets, flashing and common roofing detail applications.
Q: Is it good for moving joints?
A: Yes. Its low-modulus formulation is designed for moving joints in vertical applications and high-movement facade work.
Q: Can it be used in fire-rated joint systems?
A: It is listed for use in 2- and 3-hour UL Fire Rated Joint Systems with designations such as FF-S-0007 and FW-S-0015.
Q: Does it work on EIFS?
A: Yes, it has been tested in accordance with ASTM C-1382 for use in EIFS systems.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Choose 15 LM where joints will move; use a higher-modulus product only where a stiffer seal is desired. Tool the joint to a proper width-to-depth ratio with backer rod so the sealant can elongate rather than tear. In Aluminum Gray and Colonial White it blends with painted metal flashing and trim, so select the color before ordering since cartridges cannot be tinted on site.
Polyurethane sealants contain isocyanates; wear gloves and eye protection, ventilate the work area, and review the safety data sheet before use.
Get Sikaflex-15 LM low-modulus polyurethane sealant in Aluminum Gray or Colonial White for your next joint and facade project.
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