I've had the opposite problem with encapping. Looks like it was too good a job.
I've just had an email from a regular (6 monthly) client, asking for a quote for their offices.
I did it at the beginning of October with a Cimex machine. Apparently the upstairs offices (which were really mucky and comprise 2/3 rds of the job) still look fine. It's only the downstairs , which have oil stains that need doing.
I've done myself out of about £ 350
![Sad :(](http://www.cleanitup.co.uk/smf/Smileys/classic/sad.gif)