SGS, Inc. is a full-service Commercial Contractor serving the Mid-Atlantic region.

SGS is a highly specialized firm offering clients years of experience and expertise in innovative, cost-saving solutions from structural rehabilitation to injection grouting and everything in between. SGS is a well-known, established and trusted company in the Mid-Atlantic region serving the entire east coast with a reputation for high quality services and customer care.


“SGS has been waterproofing our electrical ducts and vaults structures for over 20 years.
SGS has confined space trained personnel to meet Pepco’s strict safety standards for entering
and working in our vaults. They have always provided quick response times to all our customers
and have always provided emergency crews, days, nights and weekends. Pepco looks forward to working
with SGS in the future in solving all our waterproofing needs.”

George Blakeney - Lead Cable Splicer, Pepco Holdings, Inc

“Superior Grouting Services, Inc. (SGS) has provided outstanding waterproofing services at
numerous buildings throughout the campus for over 25 years. They always seem to have the ability to
diagnose and solve the problem at hand. They truly are professionals from their courteous office staff,
the quick response from their estimators, and their knowledgeable work crews.”


Robert Kuhn - Assistant Director, Facilities, John’s Hopkins Hospital

“Superior Grouting is always included on our pre-approved bid list for any grouting project.
They have developed creative solutions on several projects we have worked on together and their
knowledge of grouting and below grade leak remediation is invaluable. We would highly recommend them
to anyone. On a recent below grade grouting project, another contractor was having great difficulty
stopping leakage through several foundation walls. Superior Grouting was retained by the owner on our
recommendation and within 2 days had stopped all the major foundation wall leaks on the project.”


Matthew Nachman, P.E., Construction Insight

“Finding and remediating water infiltration issues is often challenging and time consuming work.
That is why here at the University of Maryland we rely on quality contractors like SGS to help us find
and solve our waterproofing problems. We have an old infrastructure, and the knowledge and experience
that SGS brings to the table is why we continue to use them year after year.”


Sam Cooke, University of Maryland

“I wish to tell you how impressed Manhattan Construction is with Superior Grouting Services.
Our client at Georgetown University has trusted us with a major historical restoration of multiple
buildings with an aggressive schedule. The project is to convert 150 year old buildings into new student dorms.
During the pricing and scoping efforts of the project we were concerned of subcontractor choice for the Masonry
and Stone Restoration. Our reputation to satisfy our client’s expectations is critical on all our projects.
Superior Grouting Services has proved to us that we made the right subcontractor choice. Your company employees
have been very professional and responsive to the challenges of this project. I would certainly look at
future opportunities with Superior Grouting Services as the need arises.”

Marcelo Labarca - Senior Estimator, Manhattan Construction

“We are a Commercial Waterproofing contractor in the Baltimore, Virginia and District of Columbia region.
It is very important that when we finish and turn over a job to our customers we guarantee a water tight envelope.
There are occasions when a leak does develop and we need to inject a crack in the wall or a floor to wall condition.
When this happens we always call Superior Grouting, they have been very responsive when we call in getting out to fix
water leaks and in return I am able to keep my customers happy. Their crews are very user friendly which makes my life
easier and I don’t have to watch over their work.
I highly recommend Superior Grouting to anyone that need to fix a water leak that they can’t
get to from the positive side of the wall.”

Tim Brown - President, Baltimore Waterproofing, Inc.

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