Sika Waterbar® FB-125 is an internal, flexible bonded waterstop for sealing construction joints in watertight concrete below-grade structures.
It is a new solution based on hybrid flexible polyolefin (FPO) with a roughened surface creating a unique durable dual-bond to the concrete structure. The fully bonded watertight seal prevents any lateral water underflow, making it a simple, reliable solution.
Sika Waterbar® FB-125 & Accessories
See How Sika Waterbar® FB-125 Joint Sealing Works
Benefits of Sika's Flexible Bonded Waterstop
High Performance, Reliable, Durable Solution
- No lateral water underflow
- Robust and durable
- High mechanical properties such as flexibility
Lower Risk for Leakages
The waterbar is based on well-known Sika FPO thermoplastics that have been used for many years, especially in the harsh conditions of tunnel waterproofing. This proves the robustness, flexibility and durability of the Sika Waterbar FB-125.
The unique hybrid dual bond technology, as known in the SikaProof A+ membrane system, provides a durable and reliable bond to the concrete structure. Due to its full bond, the risk of leakages cause by damages or irregularities are very limited. In case such isolated leakages occur, they can be fixed by a single local injection, quickly and easily.
Fast, Easy Application and Handling
- Minimal number of joints due to long rolls
- Easy jointing, done by adhering or welding, no extra tools needed
- High flexibility and lightweight
Lower Risk for Leakages
The waterbar is based on well-known Sika FPO thermoplastics that have been used for many years, especially in the harsh conditions of tunnel waterproofing. This proves the robustness, flexibility and durability of the Sika Waterbar FB-125.
The unique hybrid dual bond technology, as known in the SikaProof A+ membrane system, provides a durable and reliable bond to the concrete structure. Due to its full bond, the risk of leakages cause by damages or irregularities are very limited. In case such isolated leakages occur, they can be fixed by a single local injection, quickly and easily.
No Extra Design or Preparation Work Required
- No extra rebar recess or kicker required
- No extra design details needed
- No obstructions during concrete casting
Lower Risk for Leakages
The waterbar is based on well-known Sika FPO thermoplastics that have been used for many years, especially in the harsh conditions of tunnel waterproofing. This proves the robustness, flexibility and durability of the Sika Waterbar FB-125.
The unique hybrid dual bond technology, as known in the SikaProof A+ membrane system, provides a durable and reliable bond to the concrete structure. Due to its full bond, the risk of leakages cause by damages or irregularities are very limited. In case such isolated leakages occur, they can be fixed by a single local injection, quickly and easily.
Dual Bond Technology
The Sika dual bond technology is well proven and known thanks to the fully bonded membrane solution SikaProof A+.
The unique FPO hybrid layer creates both a strong physical bond and a durable chemical bond. No water can pass laterally due to this reliable, full bond to the structural concrete. The robust hybrid layer replaces common anchor ribs of waterstop profiles or soft sealants of metal sheets.
Strong Physical Bond
Due to the large rough bonding surface
Durable Chemical Bond
Due to adhesion in the unique FPO hybrid layer
Reliable - Low Risk of Leakage
There is a very low risk for leaks thanks to the full bond of the dual bond technology.
In case of damage, the leak is isolated and can be fixed by a simple, single injection.
Where Can It Be Used
Sika Waterbar® FB-125 is ideal for use in construction joints in watertight concrete structures, especially below-grade structures and basements. Simple and fast assembly options are available.
It can be combined easily with Sika Waterbar® D for expansion joints (see illustration below).
Sika Waterbar® FB-125 can be used at concrete wall to slab construction joints (see detail below).
The detail section (see below) shows the minimum embedding depth of 30 mm at the construction joint slab to wall connection.
Waterbar Assembly
Tape Jointing
Simple jointing by adhering with SikaProof® sandwich tape
Welded Jointing
Welding by hot-air gun is also applicable
