Sikaflex 15LM 10.1oz Tube : Urethane


  • Excellent for moving joints in vertical applications.
  • Suitable for use between similar as well as dissimilar materials.
  • Typical applications include joints in concrete panel and wall systems, around window and door frames, reglets, flashing, common roofing detail applications, etc.
  • Exceptional sealant choice for high-rise and facade applications where high movement capability is required.
  • 2- and 3-hour UL Fire Rated Joint System Nos. FF-S-0007, FF-S-0037, FW-S-0015, FW-S-0018, HW-S-0076,HW-S-0095, WW-S-0011 and WW-S-0060.
  • An effective sealant for use in Exterior Insulation Finish Systems (EIFS).
  • Low modulus of elasticity
  • Easy and ready to use
  • Eliminates time, effort, waste and equipment clean-up
  • High elasticity – cures to a tough, durable, flexible
  • consistency with exceptional cut and tear resistance
  • Stress relaxation
  • Very good adhesion – bonds to most cons
  • Very good reistance to weathering
  • Proven in tough climates around the world

Data Sheet

Color Chart




Sikaflex 15LM  is a low-modulus, high-performance, Urethane-based, suggested by EPA for radon reduction component, polyurethane-based, non-sag elastomeric.Can be painted sealant. Meets Federal Specification TT-S-00230C, Type II, Class A; ASTM C-920, Type S, Grade NS, Class 100/50, use T, NT, G, A, O, M; Federal Specification for silicones – TT-S-001543 A, Type non-sag. Movement capability of +100/-50% (ASTM C 719) Tested in accordance with ASTM C-1382 for use in EIFS systems. Questions? Contact us

Recommended application temperatures, 40°-100°F. For cold-weather applications, pre-conditioning units to approximately 70°F is recommended. Only apply sealant to clean, sound, dry, and frost-free substrates. Sikaflex- 15LM should be applied into joints when joint slot is at mid-point of its designed expansion and contraction. Place nozzle of gun into bottom of the joint filling entire joint. Keep nozzle in the sealant, and continue on with a steady flow of sealant preceding the nozzle to avoid air entrapment. Avoid overlapping of sealant to eliminate entrapment of air.

Substrate Temperature

  • +40 °C to +100 °F (+4 °C to +38 °C)
  • Sealants should be installed when substrates are at mid-range of their anticipated movement.


Cure Time

  • Tack-free time 2 to 6 hours (TT-S-00230C)
  • Tack-free to touch 3 hours
  • Final cure 7 to 10 days

Priming can help get a better bond in many situations

• Priming does no substitute for good prep

• Many products perform w/out primers

• Most commonly used on horizontal and submerged applications

• Must be done properly
to work (primers are Proper primer application with brush not error free: Prime only sides of the joint. ponding, waiting time, etc.)

15LM Installation

Additional information

Weight .52 kg
Dimensions 31.12 × 5.08 × 5.08 cm

Almond, Black, Coping Stone, Dark Bronze, Hartford Green, Limestone, Off-White, Redwood Tan, Stone, White

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