
SIKA Sikaflex-15 LM Low-Modulus Polyurethane Sealant 10 oz Cartridge White
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SIKA Sikaflex-15 LM Low-Modulus Polyurethane Sealant 10 oz Cartridge White
Sika Sikaflex-15 LM is a low-modulus, one-component, polyurethane-based non-sag elastomeric sealant supplied in a white 10.1 oz cartridge. It is easy to use with no mixing or equipment cleanup, and excels at moving joints in vertical applications. Each box contains 24 cartridges.
Key Features:
- Low Modulus: Low-modulus formulation with high movement capability for moving joints.
- One-Component: Ready-to-use single-component polyurethane, no mixing required.
- Non-Sag: Non-sag elastomeric consistency suited to vertical applications.
- Dissimilar Materials: Suitable for use between similar as well as dissimilar materials.
- Fire Rated Joints: Used in 2- and 3-hour UL fire rated joint systems including FF-S-0007, FW-S-0015 and HW-S-0076.
- Code Compliant: Meets ASTM C-920, Type S, Grade NS, Class 100/50 and Federal Specification TT-S-00230C, Type II, Class A.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Sika |
| Manufacturer model | 442144 |
| Sell unit | 1 cartridge, 10.1 oz |
| Product line | Sikaflex-15 LM |
| Material | One-component polyurethane |
| Color | White |
| Size | 10.1 oz cartridge |
| Type / grade | Low-modulus, non-sag elastomeric sealant |
| Applicable standards | ASTM C-920 Type S, Grade NS, Class 100/50, use T, NT, G, A, O, M; TT-S-00230C Type II, Class A; TT-S-001543A Type non-sag; tested per ASTM C-1382 for EIFS |
| Pieces per box | 24 |
| Pieces per carton | 24 |
| Warranty | Limited Product Warranty |
| Item weight | 1.04 lb |
| Intended use | Moving joints in concrete panels and wall systems, window and door frames, reglets, flashing and roofing details; high-rise and facade applications |
Fit and Compatibility:
Suitable for use between similar and dissimilar materials including concrete panels, window and door frames, reglets, flashing and common roofing details, and is tested per ASTM C-1382 for use in EIFS systems. Proper joint design and backer rod, where required by joint geometry, are standard practice.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 10.1 oz white cartridge of Sikaflex-15 LM; full boxes contain 24 cartridges.
Q: Where is this sealant used?
A: For moving joints in concrete panel and wall systems, around window and door frames, reglets, flashing and common roofing detail applications.
Q: Is it easy to apply?
A: Yes, it is a one-component, ready-to-use sealant that eliminates time, effort, waste and equipment clean-up.
Q: What does low modulus mean?
A: It means the cured sealant stretches readily, making it excellent for moving joints and high-movement facade applications.
Q: Can it be used in fire-rated joints?
A: Yes, it is used in 2- and 3-hour UL fire rated joint systems such as FF-S-0007, FF-S-0037 and FW-S-0015.
Q: Does it work on dissimilar materials?
A: Yes, it is suitable for use between similar as well as dissimilar materials.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Sikaflex-15 LM is a go-to choice for expansion and moving joints where a high-movement, low-modulus sealant is specified, especially on vertical facade and high-rise work. Tool the joint for full substrate contact and follow the printed joint-width-to-depth ratio for proper movement capability. For horizontal traffic-bearing joints, select a dedicated traffic-grade polyurethane instead.
Polyurethane sealants contain isocyanates; wear gloves and eye protection, ventilate the work area, and follow the Safety Data Sheet.
Order Sikaflex-15 LM white polyurethane sealant today for professional-grade moving-joint sealing.
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