MiddleSon Coating and Supply Inc. is an exclusive wholesaler of commercial construction coatings and waterproofing materials. ... Our success is the result of an unwavering focus on a simple guiding principle -treat distributors and contractors (large and small) with respect and provide them the products and services they need to build their businesses. We offer the highest quality products, superior service and delivery, ensuring that our distributors and contractors have the products they need - when and where they need them. read more