In Atlanta and all of Georgia, it’s Trotter Company for Drainage, Basement Waterproofing, Crawl Space Waterproofing, Foundation Piering and Wall Reinforcement. Since 1929 Trotter has been trusted by more than 30,000 homeowners for drainage, basement waterproofing and foundation repair.. Only Trotter Company has 80 years of experience making foundation repairs in Georgia’s unique red clay....