An under-floor system is designed to remove water from under the crawl space after it has already intruded into the crawl space. If installed throughout the entire crawl space it can minimize the moisture under the home. An under-floor system generally consists of 3” perforated drain line with Class II perm drain rock. From this main line there will be finger trenches and then the under floor will be capped with a vapor barrier.
'Recently I had a retaining wall replaced by Bay Area Drainage - I was very impressed by the company and their work. The price was very reasonable and the workmen were the nicest I have ever met. They were very polite and when the job was completed the area was left very neat and clean. I would not hesitate to recommend Bay Area Drainage very highly to anybody .'
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