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The historic restoration of Boston's Longfellow Bridge is now complete! The large-scale granite restoration project included onsite blasting by United Stone, as well as dismantling the bridge’s iconic Rockport granite “salt and pepper” towers piece-by-piece, and then transporting them to nearby workyards in Charlestown via barge for offsite restoration. The now pristine towers were reassembled using a mix of modern and historic construction technology. Skilled masons at United Stone were able to clean ornate granite carvings as well as the large granite blocks using the same equipment and media.

Surface Preparation (or Surface Prep for short) is the process of cleaning and readying surfaces for new coatings. Due to varying attributes and performance characteristics of the many coating types, surface preparation requirements can also be unique from project to project. As a result, it’s very important to always read the coating specification and all coating technical data sheets.

Every manufacturing facility and production plant around the world have tanks on their property. These tanks contain a number of different things - some tanks contain liquids like water used for cooling, while others store waste from the manufacturing process. Some tanks hold finished product in the form of liquids or gas. All tanks are built to meet specifications created to prevent tank ruptures. Unfortunately, a tank can perfectly conform to design specifications and still be affected by corrosion and coatings failure. Over time corrosion can lead to structural or tank wall failure creating both an environmental and safety impact. 

Projects involving granite substrates are a contractor’s most common kind of masonry restoration. Granite is a beautiful, durable stone  used on the interior and exterior of buildings, structures, and monuments.It has a Mohs hardness ratings between six and seven and therefore capable of withstanding the demands of everyday life.