I think the best way to do this would be to employ a sand blaster. It's no doubt messy but with care will be the quickest way to remove the adhesive. There will be massive damage to the congoleum (why is this on the wall and not the floor). Consider removing the congoleum with the offending adhesive and then going forward with your redesign. Perhaps when all is said and done you might just wish… Read More
You're basically SOL. Short of replacing the damaged tiles, there is nothing you can do. The care information from Congoleum specifically says not to use a steam cleaner. You basically melted the tile and deformed it when you stepped on it in its softened state.
Most of the vinyl floors that are sold currently are called "No Wax Vinyl Floors" this means that the top coating is manufactured so that when you use the floor cleaner suggested it will look as it did when installed- the flooring industry..(like computers) are constantly changing and becoming more user friendly/easy care- Vinyl floors that are not called No wax- need to be stripped and cleaned- then liquid wax applied to give it that… Read More