On this job, many radiators were replaced. Some went back in to roughly the same location, and some were moved. The cribbing supporting the radiators is at finished floor level. The radiators are actually installed like this, and test run, prior to the floor going down. This ensures there will be no noises and if there is any problem, it can easily and quickly be repaired. Then the radiators are removed for the flooring crew. Then reinstalled at the end of the job.