Michael Reynolds


 Mike is a graduate of  Williamson Trade School with an Associates degree in Specialized Construction Technology. Mr. Reynolds has extensive experience in waterproofing, masonry restoration and concrete rehabilitation. Mike has been working with Northern for 23 years, beginning his journey as a laborer in our PA office, and has continued through, moving to our Ocean City office full time in 2003.  Mike is now fully involved in all aspects of the business, and currently oversees the day-to-day operations in Maryland. Mike currently holds several certifications, such as: OSHA Scaffold Industries of America, Rigging Scaffolding, Windows & Sliders, and Applications of EIFS.  Mike maintains active involvement within several industry trades associations such as OC Chamber of Commerce, DCMA & The Hotel Motel Restaurant Association and also spends his time as a volunteer helping with construction projects for the Believe In Tomorrow Foundation.

Our Team

Joshua Steward


Mr. Steward contributes his extensive knowledge in building construction, specializing in sealants, coatings, bricklaying, waterproofing, masonry restoration, concrete rehabilitation. Josh has been responsible for not only quality work and productivity, but also performing on site safety meetings to ensure the safety of all of our employees. Josh continues to increase his knowledge by attending industry related courses and hands-on training seminars. Josh is a certified mold technician and certified in Sikalastic RoofPro. 

​David Guinan


Mr Guinan earned a degree from Villanova University in Communication Studies, Marketing & Finance with a minor in Psychology.  David has been with the firm for 5 years and is accountable for the administrative, financial, and risk management operations of the company, which includes the development of a financial and operational strategy, metrics, and the ongoing development and monitoring of control systems designed to preserve company assets and report accurate financial results. David also guides and manages the overall provision of Human Resources services, policies, and programs for the entire organization. 

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About Us

Kristin Guinan 


Kristin earned a degree from West Chester University in Communication Studies. Kristin recently joined the firm full-time, following a stellar 13-year career providing products/services to every facet of real estate. Kristin is very well known for a natural and genuine ability to develop and cultivate professional relationships with colleagues and clients alike.  She is a prominent and proven leader to peers as demonstrated by her election as President of the PA East Apartment Association Associates Council.  A strong advocate for
commitment and dedication, Kristin has served on multiple industry boards including, the DE Apartment Association and Institute of Real Estate Managers. Kristin is always the first to volunteer for a charity or industry program, always focusing on the greater good.  Her efforts have been recognized multiple times by industry professionals, receiving top honors including; Member of the Year, Best Sales Person & Best Industry Involvement.

James J. Guinan III


Founder and President of the Northern Waterproofing & Restoration firm. Mr. Guinan has worked for over 40 years in the construction/waterproofing trades. James has extensive experience in bricklaying, waterproofing, masonry restoration, concrete rehabilitation and historic recreation. A respected businessman and well-rounded member of the construction community, James is fully versed in every aspect of the company's business. James is dedicated to sharing his wealth of knowledge with all team members so as to continue the successful business he has worked so hard to build based on a foundation of Quality, Commitment & Integrity.

For over 35 years, Northern Waterproofing and Restoration has achieved an excellent reputation in the specialized masonry restoration business. In that time, we have achieved our success based on our strong commitment to quality service, dependability, performance, and the realization that the customer is the most important asset in our business.

Northern Waterproofing & Restoration serves the greater Philadelphia, New Jersey, Delaware and Maryland areas. Northern's quality workmanship can be seen in industrial facilities, commercial properties and apartment/condominium communities throughout the East coast.

Evidence of customer satisfaction can be found in our 97% repeat business. We strive to make certain that the restoration work is accomplished in a timely manner.