Yes, strip out a previous tank liner or sealer before applying KBS Tank Sealer. Tank Sealer is formulated to bond to a bare surface prepped with KBS Klean and RustBlast, so a previous coating has to come out first with KBS Strip.
Directions for stripping out an old tank liner:
- Pour KBS Strip into the tank and carefully rotate it to allow contact with all interior sides. It may take multiple applications to finish the job completely.
- Old sealer may come loose in big chunks or small pieces. Use a long tweezers-type tool to help remove loosened material from the tank.
- After stripping is complete, rinse the tank generously with water.
- Proceed with the full KBS 3-Step Tank Sealer System for surface prep and sealing.
Working warm helps: KBS Strip works best when both the tank and the stripper are warm. Above 70°F is ideal, and warmer is better. KBS Strip can also be poured out, strained, and reused for multiple passes, so one container goes further than a single application.
Review the complete Tank Sealer Application Directions before you start your project.
Frequently Asked Questions: Removing a Previous Tank Coating
Yes. Tank Sealer is formulated and designed to stick to a bare surface that has been prepped with KBS Klean and RustBlast. It is always a good idea to strip out a previous sealer with KBS Strip before starting fresh, since sealing over a failed or existing liner causes the new coating to fail with it.
Yes. Work with both the tank and KBS Strip as warm as possible. Above 70 degrees F is ideal, and warmer is better. Cold temperatures slow the stripper down and can mean more passes to fully remove the old liner.
Use the same KBS Strip process, but keep contact time to a minimum. Fiberglass resin can be attacked and weakened by extended exposure to the stripping agent, so do not let it dwell on a fiberglass tank as long as you would on a metal tank.
Still have questions about stripping an old tank liner? Contact us for help.
