Waterproofing problems in your basement or crawlspace can quickly turn into mold, wood rot, and other serious safety and structural issues. Helitech is here to help. Helitech has been Your Hometown Waterproofing Contractor for Over 30 Years. Helitech is the Quad Cities’ only contractor of Hydraway — the best-performing waterproofing system on the market, guaranteed. Helitech has been proudly serving the Quad Cities for over 30 years.