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Lauren Knollmeyer

General Manager

Lauren is  agraduate of Northeastern University, where she earned a Degree in Environmental Studies, Political Science and Business Administration. She is a great addition to the firm and she is excited to be part of the Project Management Team!


Office: 978.203.0584 x217 


Carol mahan

Sr. Vice President of Business Operations and Finance

Carol joined the KBC Team in August of 2016. She brings with her over 35 years experience in construction accounting. As Corporate Controller, Carol manages all segments of finacial operations, including managing the staff responsible for generating payroll, payables and receivables. 


Office: 978.203.0584 x 203


Shawn D. Vetere

Vice President of Marketing and Business Development

Shawn possesses over 20 years of sales and marketing experience. He specializes in the development of new clients and opportunities for Greylock Roofing. Currently, Shawn is the President of the New England Chapter of RCI and is a active member of CSI, BOMA, CAI and is a Friend of IREM.


Office: 978.203.0584 x 212



Kevin Malloy

General Superintendent

Kevin has been in the roofing industry for over 30 years. A graduate of Boston University, he has experience providing roofing services for both the private and public sectors.


Office: 978.203.0584 x 207


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Marcelo Rosales

Roofing Estimator

Marcelo joined Greylock Roofing Company, Inc. in 2015 and has been promoted up through the ranks during his tenure with the firm. He is customer friendly, with a strong work ethnic, Marcello is doing a great job leading the Greylock estimating department.


Office: 978.203.0584 x 209

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Tim Wade
Project Manager/Field Supervisor



Michael has been working in the roofing industry for over 20 years. He began his roofing career working for a roofing product manufacturer as a Technical Representative. Later he moved on to the field and worked his way up to estimator.

Office: 978.203.0584 

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Beverly Randazza

Accounts Payable/Payroll Manager

Beverly joined the GRC team in November of 2015 and has quickly become a key member of the office and finance staff.  Beverly possesses over 25 years of experience in Accounts Payable and Receivable. She also graduated from Katharine Gibbs School in the Advanced Secretarial Program, and she is a graduate of Northeastern University with an Associate's Degree in Business Administration.


Office: 978.203.0584 x201


In Memory of
Paul Quinlan
Former Warehouse Manager

Paul "Quinnie" was employed by the Greylock Roofing Company ownership for over 28 years. He was the Warehouse Manager from 2014 until his passing on April 6, 2021. He had previously held a supervisor role for group since 2001. He will be missed by all who knew him.



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