Sika Ferrogard-903 — Surface-Applied Migrating Corrosion Inhibitor for Existing Concrete (20 kg)

Sika Ferrogard-901 solves the corrosion problem during construction — mixed into fresh concrete before it's placed. But what about the structures that are already standing? Bridges that have been carrying traffic for twenty years. Coastal buildings that have absorbed salt air for decades. Parking structures where de-icing chemicals have been slowly working their way through the concrete cover. You can't go back and add an admixture to concrete that's already there — but you can apply Sika Ferrogard-903 to the surface, and let it do the work from the outside in. That's the fundamental difference between these two products, and it's why Ferrogard-903 from Sika India is one of the most important construction chemical tools in the concrete rehabilitation and life-extension space.

Ferrogard-903 is a surface-applied migrating corrosion inhibitor. Applied directly onto hardened concrete surfaces by brush, roller, or spray, its organic inhibitor molecules are small enough to penetrate the concrete pore system and migrate through the concrete matrix towards the embedded steel reinforcement. Once they reach the rebar, they form the same protective molecular film that 901 provides from within — inhibiting the electrochemical corrosion reaction that chloride ions drive and creating a lasting barrier between the steel and the aggressive chemistry in the surrounding concrete.

For existing structures showing early signs of chloride contamination, spalling concrete from corrosion pressure, or simply approaching a life-stage where intervention is warranted before visible deterioration begins — Ferrogard-903 provides a practical, proven way to extend structural service life without demolition and reconstruction. Marine and coastal structures, infrastructure exposed to industrial pollution, older reinforced concrete buildings in high-humidity environments — these are the structures that benefit from what Ferrogard-903 does.

Backed by Sika's globally trusted construction chemical expertise and a track record on concrete rehabilitation projects worldwide — Ferrogard-903 is the surface treatment that buys reinforced concrete structures the additional service life that responsible asset management demands.