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We are your premier historic preservation contractor. Our trained experts represent a wide range of specialties and are well equipped to restore your historic structure, no matter the size, location, or special considerations.

Whether we are completely restoring a historic building or making essential, smaller repairs, our craftsmen take pride in their work, obsessing over each detail. Beginning with a thorough, in-depth analysis from our in-house Preservationists to the final layer of three-lime mortar, your project is in the considerate care of our world-class Craftsmen.

Count on us to work briskly and ably as part of a larger team, alongside shared clients, architects, and other trade professionals. Working together, our work will be completed efficiently for a product that will last generations.

For timely work and timeless results, count on The Durable Restoration Company.

Work Begins on Grouseland


Steeples, Domes, & Roofs

When it comes to steeples, domes and historic roofing restoration and repairs, few have more experience and expertise than our team. Our in-house experts have studied and examined these types of structures, materials and installation techniques throughout the world. We will bring all of this knowledge and passion to you to help ensure your project has the correct assessment to ensure the original look and aesthetics are preserved for many generations to come.

Assessment & Consulting

Our team of knowledgeable historic preservationists offers the ability to create many documents that can aid in the continued preservation of your structure. These include preservation plans, Condition Assessments, Restoration Priority lists and even material and method specifications. We can even create essentially an owner’s manual for the proper site specific techniques of preservation.

Historic Brick, Stone, & Terra Cotta

When it comes to historic brick and stone masonry, the mortar utilized is equally important to the integrity of the structure. Our team will test and analyze the mortar used as well as the cause of the deterioration in the stone, terra cotta, or brick, and educate the customer of these causes and determine solutions. Historic materials, specifically mortar and brick from pre 1930 are vastly different than modern materials and necessitate specific knowledge to repair correctly and not cause greater deterioration.

Structural Stabilization

Preservation of a structure’s stability is the first step in saving the integrity of a historic structure, a solid base is needed to support the architectural elements that contribute to the buildings significance. There are many different techniques our team use in our structural stabilization projects, each tailored to the project at hand. Typically our team of experts includes Engineers who specialize in historic buildings along with historic craftsmen.
Door surround made of Hummelstown Brownstone, from Hummelstown, PA.
Stone that was delaminating has been removed to prep for repair.
Deterioration is due to an improper coating that was applied 30 years prior.
Vapor permeable (breathable) mineral coating will be applied once new patch has been allowed to cure.
New custom stone patch, which has been carved to match the detail of the door surround.
New custom stone patching, which has been tooled to match original hand carved details, including original chisel marks.

Historic Coatings

Many historic structures feature historic coatings. These range from lead paint, oil paint, mineral coatings, thermoseal and/or modern paints. While some coatings can be historically appropriate for the building, sometimes they are the main reason for deterioration and need to be remediated.

Historic Hardscapes

When it comes to historic stonework and masonry details, appropriate restoration methods and materials can make the difference between a seamless repair and one that stands out more than the original deterioration. Our team properly utilizes many methods of patching and repairing historic stones which brings the uniqueness of the structure’s details back to its prime.

Historic Plaster

While the techniques for historic plaster application are remembered by few, our team of artisans ensures the techniques live on well into the future, by having mastered and utilizing the three-coat lime plaster that was used almost exclusively until the end of the 19th century. This technique is unmatched in its historical appropriateness, strength and durability, and is incredibly fire and acoustic resistant.

Cemeteries & Monuments

By restoring cemeteries and monuments, our team takes on the role protecting and paying homage to the past as these monuments are a remembrance of a person, place, or significant event in history. Our team utilizes appropriate and accepted technologies and methods to clean and restore these memorials so that they may live on for decades to come.