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We take pride in our reputation for consistent quality work in a timely manner and for a fair price.

Washington Marble and Granite is a third-generation family owned and operated stone contractor serving the Washington DC Metropolitan area. We fabricate and install all natural stones, engineered stones, and sintered stones from around the world. We have been specializing in countertops fabrication and installation since 1988 and install in both private residences and commercial applications. In our shop, our experienced team members operate the latest and technologically advanced Italian-made equipment made for cutting, shaping, and installing stone.

Visit Our Showroom

Simply put, WMG knows that its clients come first, and we do everything we can to make sure that they have a pleasant and unforgettable experience. Customer service and dependability is a priority of ours and we want to make sure our clients know that they are taken care of. Owners Ronald and Michael Ganassa and their team of skilled craftsman have the tools necessary to make sure that we are producing a high quality product for each one of their customers. Stone fabrication faces many hurdles in this day in age, having a trustworthy and reliable source are standards that we set for our company.

We are conveniently located for clients around the Washington DC, Frederick MD and Montgomery County areas. We have a world-class facility where customers can view stone slabs and meet with a friendly and knowledgeable sales professional. Clients are welcomed and encouraged to be involved in the entire process from selection to slab layout.

Visit Our Showroom

Our Fabrication Shop

Our Sister Companies

An added convenience to our clients is that our sister company, The Washington Kitchen Gallery, and our parent company, R. Ganassa Tile Co. Inc. are also on site, operating under one management. Clients can select stone countertops, cabinetry, and tile. Our designers at The Washington Kitchen Gallery provides close guidance every step of the way from planning to execution.

R. Ganassa Tile Co., Inc

Specializing in commercial and high-end residential projects incorporating tile and dimensional stone – including flooring, stone wall cladding, and bathrooms.

The Washington Kitchen Gallery

They are here to help navigate you through the many design decisions that you will need to make. They will explain every step of the way so that you can make the decision that is best for you.

Proud Participants of the Gary Sinise Foundation

We are proud to participate in helping the Gary Sinise Foundation build smart homes for wounded veterans of the military. We custom engineer our stonework to fit the unique needs required in each of these homes.

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National Tile Contractors Association Member
Natural Stone
Institute Member
Stone Fabricators
Alliance Member
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