1. Grind off the surface layer of concrete where the dome test is to be applied and leave exposed for 24 hours.
2. Return to site to place the plastic dome test.
3. Return to site to collect the results.
When the NFCA Floor Covering Reference Manual is specified on the job it becomes the responsibility of the General Contractors and/or the building owner to provide and pay for such testing through a third party testing agency. The flooring contractor should not be responsible to provide such testing as he/she has no control over the site and so cannot protect against active tests being spoiled by other trades.