Sika — Sealants & Adhesives
Sikaflex-11 FC
Multi-purpose elastic polyurethane adhesive and joint sealant.

- Roof Waterproofing
- Joints & Cracks
- General Construction
Technical Overview
- Product Type
- Polyurethane Sealant & Adhesive
- System
- One-component
- Cure Mechanism
- Moisture-curing
- Application
- Gun-applied (cartridge)
- Suitable Surface
- Concrete, Metal, Wood, Masonry
- Primary Use
- Elastic Joint Sealing & Bonding
- Environment
- Interior / Exterior
About This Product
Sikaflex-11 FC is a one-component, gun-applied polyurethane compound that works as both an adhesive and a joint sealant in a single product. It cures on exposure to atmospheric moisture into a durable, permanently elastic material, which makes it suited to fixings and joints that need to move without losing their seal.
System Role
Adhesive & joint sealant
Used at the detailing stage of a build — bonding fixtures and sealing joints where a rigid material would crack under normal building movement.
Typical Applications
Roof Waterproofing
Membranes, coatings and detailing materials for exposed and weather-sensitive roof structures.
Joints & Cracks
Movement joint sealants and crack repair materials for structural and non-structural detailing.
General Construction
Everyday bonding, sealing, and finishing materials for site and general building work.
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