Natural stone and pattern concrete can add an attractive touch to many locations that can be found in the Toronto area. Commercial pattern concrete power washing is a vital step in preserving natural stone and pattern concrete. Seal Tech, Inc. of Toronto is the leader in this field. The company has numerous endorsements and holds a Better Business Bureau A+ rating. Seal Tech’s commercial pattern concrete power washing is an important step. This effort keeps a portion of an attractive landscaping effort from looking like an abandoned parking lot.