I did mine myself few years ago. Man it was a lot of work but was definitely worth it. Butyl tape works good for holding liner to concrete wall. I used it then I tap conned every 16 inches to keep it from pulling down when I am in the crawl walking around. I terminated my liner a foot below my sill plate. I put a gravity condensation draining dehumidifier in mine that drains into my hvac condensate pump. It has a washable filter that I check every 6 months but it's always pretty clean. I keep the RH setting at 55% on mine. It raised my electric bill about 15 bucks every month except for the first month it was installed which was about 35 dollars more.