Specialties Gutter Services of NJ, Inc. covers all of Mercer County and adjoining areas. Our trained personnel do thorough gutter and downspout cleanings, hydro-flushing gutters and minor/major repairs. A complete installation of gutters, leaders and gutter guards/covers. All work is covered by our customer satisfaction guarantee. History Established in 2008. We have become a highly respected professional company in and around our community performing gutter installations, repairs, sales and delivery, gutter cleaning and sales of gutter covers. Our company strives to achieve the greatest satisfaction for our customers through our work ethics and performance. Call us for a free estimate!