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Sika Sikadur 51 SL 4 Gallon Unit
Sikadur 51 SL is a two compnent, self-leveling, 100% solids, flexible, control joint resin sealer and adhesive used to fill horizontal, non-moving, saw cut construction control joints and cracks.
- Remains flexible
- Does not age-harden
- Prevents deterioration of joint edges
$408.28
SKU
19084
Sikadur-51 SL – 4 Gallon Unit
Sikadur-51 SL is a flexible, two-component epoxy resin designed for sealing horizontal control joints and cracks in concrete. This self-leveling, 100% solids joint sealer maintains long-term flexibility without aging or hardening. It is durable enough to withstand wheel traffic and heavy loads, making it suitable for industrial floors, warehouses, and security applications. Sikadur-51 SL offers strong adhesion to concrete and remains effective in areas with minor slope grades. Its shock-absorbent formulation helps protect joint edges and reduces future deterioration.
Key Features:
- Flexible, self-leveling epoxy joint sealer
- Remains flexible over time – does not age-harden
- Withstands wheel traffic and heavy industrial loads
- Prevents joint edge deterioration
- Shock absorbent and tamper resistant
- Compatible with plural injection equipment
Applications:
- Sealing horizontal, non-moving concrete joints
- Filling control joints in industrial floors and warehouses
- Security and tamper-resistant sealing applications
- Flexible adhesive for concrete and similar substrates
- Suitable for use on concrete slabs with up to 15% grade
Technical Specifications:
| Property | Value |
|---|---|
| Mix Ratio | 1:1 by volume |
| Shore D Hardness | 50–55 (28 days) |
| Tensile Strength | 570 psi |
| Elongation at Break | 90% |
| Tensile Modulus | 2,800 psi |
| Water Absorption | 1.86% after 7 days |
| Pot Life | 20–25 minutes (1 gal volume) |
| Tack-Free Time | 7–8 hours |
| Coverage (4 gal kit) | 102 linear ft (1/8" x 1.5" joint) |
| Color | Concrete Gray |
| Packaging | 4-gallon kit (A+B) |
| Shelf Life | 2 years (unopened) |
Frequently Asked Questions:
Can Sikadur-51 SL be used in moving joints?
No, it is not suitable for expansion or moving joints. Use only in non-moving construction or control joints.
How should the surface be prepared?
Concrete should be clean, dry, and mechanically prepared to a CSP-3 to CSP-4 profile using shot blasting or similar methods.
Is this product suitable for sloped areas?
Yes, Sikadur-51 SL can be applied on grades up to 15%.
| Brand | Sika |
|---|---|
| Size | 4 Gallon |
| Manufacturer | Sika |
