Harvard University – Harvard Divinity School
Project Description
Property History
Completed in 1911 at a cost of $300,000, Andover Hall was designed by Allen and Collens, a firm that focused largely on neo-medieval and ecclesiastical designs, and is the only building at Harvard built in the Collegiate Gothic style of architecture. When it was built, Andover Hall contained a library, lecture and seminar rooms, a chapel, professors’ studies, administrative offices, and dormitory rooms. Today, Andover Hall still contains a chapel and some classrooms, but it also holds many administrative and faculty offices.
Project Scope
Grand Light restored numerous historic lighting fixtures, including ceiling lights, pendants, and lanterns. Fixtures whose finishes deteriorated beyond repair were media blasted to strip them of rust and paint, before receiving a fully new finish. The remainder of the fixtures were ultrasonically and hand-cleaned, and low-pressure media blasted to conserve their existing finishes, with some receiving localized patina repairs. Each fixture received multiple layers of protective top coating. The existing glass was cleaned and conserved when possible, while missing or damaged pieces needed to be replaced with similar-in-kind replication glass. Each fixture had their existing electrical components fully replaced and rewired with UL listed products, and were tested in accordance with UL 1598 standards.
Services Performed
Surface Preparation
Grand Light specialists perform testing on each fixture to determine the optimal surface profile for powder coat, paint, metal oil, or hot/cold patina application. Our processes utilize a wide range of equipment including Pyrolysis, Burn-Off, Thermal, and Blast Cabinets to remove an existing finish and smooth or roughen a surface.
Our industrial Pyrolysis, Burn-Off, Thermal Ovens and Heaters offer high-temperature, controlled burns for removal or vaporization of finish or foreign material from metal surfaces. Any remaining ash is removed through our blast cabinet services.
Our industrial Media Blast Cabinets are generally used to remove existing material (finish, contaminants, rust, etc.) or smooth/roughen a surface, all without causing damage to the original profile and aesthetic elements. Each cabinet houses a large work area and adjustable turn table to easily maneuver fixture frames and components.
Finish Application & Top Coatings
As a part of the restoration process, our artisans explore the intricate details of preserving the historical integrity of lighting fixtures including color matching and sheen of the original finish. Custom lighting finishes are available in custom painted colors, sheen, and textures as well as custom patina colors on bronze, copper, and brass components.
Our artisans can match any color or finish utilizing a variety of processes involving Powder Coat, Spray, Hot or Cold Patina Custom Recipes and Color Blending an existing finish.
Grand Light exercises meticulous techniques that are unparalleled in the application of Protective Top Coatings including binders, rust, and UV resistant protective metal oils, waxes, and lacquers with various customized sheens and tints.
Glass Cleaning & Fabrication
Grand Light’s Crystal, Glass, & Acrylic Studio specializes in the cleaning, repair, fitting, custom fabrication, replacement and replication of crystal, glass, and acrylic components of varying types, sizes, and color.
Our extensive cleaning solutions include hand cleaning, abrasive, micro-abrasive, and ultrasonic cleaning technology. Our artisans utilize a proprietary cleaning solution before each component is rinsed and hand polished. We have extensive experience pinning and stringing crystal components on historic and custom lighting fixtures. Utilizing time proven techniques, our artisans install pinning wire, clips, and connecting rings on crystal components in a wide variety of sizes, shapes, and designs.
Our specialists will identify and research any missing crystal or glass component on a historic lighting fixture and offer up a similar or exact grade, size, tint, color, and shape to maintain a fixtures historical integrity.
Grand Light offers a wide variety of custom, high quality architectural glass and acrylic diffusers, available in an array of styles, types, and sizes. Our high quality architectural diffusers are available by custom order and offer unique, one-of-a-kind pieces or replications of an existing design.
Cleaning Systems
Grand Light specializes in commercial luminaire cleaning services, including the utilization of state-of-the-art Ultrasonic, Micro-Abrasive, and Hydrosonic Molecular Impact System (HSMI) Cleaning Technologies. Using our engineered cleaning systems, our artisans are able to eliminate decades of accumulated debris from any lighting fixture or surface.
Grand Light’s Industrial Ultrasonic Cleaning Tanks provide high-frequency sound waves transmitted through liquid to scrub clean the surface of immersed parts. The high-frequency sound waves, typically 40 kHz, agitate the liquid solution of water or solvent, and cause the cavitation of solution molecules.
Our Micro-Abrasive process utilizes fine abrasive media to generate an accurate, precise, and controllable abrasive jet to target and remove material (on the micron level). Our system is so precise it can remove ink from a business card without damaging the card’s surface.
HSMI is Grand Light’s unique, proprietary system includes powerful continuous super high steam production up to 369 degrees Fahrenheit with an integrated wet vacuum system insuring residual moisture and debris extraction. Purified dry vapor steam and integrated vacuum system guarantees spot free crystals and fixture frames.
NRTL Testing & Listing
Utilizing only UL listed products, Grand Light’s OSHA NRTL Certified Manufacturer’s Testing and Listing Laboratory strives to ensure only the highest quality of standards go into finalizing each lighting fixture; from the rewiring of luminaires, to the installation of modern lamp technology, and the custom conversion of gas powered fixtures to electric.
Grand Light’s technicians inspect and document any electrical deficiencies on every lighting fixture prior to any electrical component replacement and rewiring. We also offer comprehensive retrofit kits for upgrading existing historic luminaire to take full advantage of modern induction lamping technology. Grand Light’s practice is to perform multiple UL tests on all electrical components and systems to ensure compliance with UL Standards for luminaires.
