When a Museum Calls About UV Damage, the Clock Is Already Running
Ultraviolet radiation doesn’t announce itself. It degrades textiles, fades documents, and breaks down organic materials at a rate that accelerates with every hour of unfiltered exposure. When the Museum of Jewish Heritage at 36 Battery Place in Lower Manhattan reached out to us about their skylight, the concern wasn’t cosmetic — it was preservation.
The museum houses historically irreplaceable artifacts and artwork. Their main exhibition hall sits beneath a large skylight structure — a glazed dome that floods the space with natural light. That light was also delivering uncontrolled UV and solar heat directly onto the collection below.
“A skylight on a museum is a design decision that looks great until you realize what it’s doing to the artifacts underneath. Our job was to stop the UV without losing the architecture.”
Project Overview
| Location | Museum of Jewish Heritage (Holocaust Museum), 36 Battery Place, Lower Manhattan, NYC |
| Structure | Skylight dome — 24 triangular glazed panels, approximately 72 inches per side |
| Height | ~120 feet (36.5 meters) above floor level |
| Access | Exterior only — interior space too narrow for lift equipment |
| Film | Solar Gard Sentinel Plus Stainless Steel 15 OSW (exterior-grade) |
| Crew | SPRAT/IRATA-certified rope-access technicians, supervised by Andriy Mykyta |
| Key challenge | Sustained crosswinds from the Hudson River; no interior access; 24 individual panels requiring precision trimming |
| Outcome | Full UV protection (>99% blocked), 72% total solar energy rejection, 85% glare reduction — zero damage to glazing or structure |
Why Exterior Film — and Why This Specific Product
Most window film installations happen on the interior surface of the glass. It’s simpler — you control the environment, there’s no weather to contend with, and curing happens in a stable climate.
This project couldn’t be done from the inside. The skylight’s internal geometry was too restrictive for lift equipment, and the only way to reach the glass was from the roof — 120 feet up.
That constraint determined the product selection. Solar Gard Sentinel Plus Stainless Steel 15 is an OSW (Outside Weatherable) film engineered specifically for exterior application. As a Solar Gard authorized dealer, we source this product directly from the manufacturer — not through distributors — which means verified product authenticity, full manufacturer warranty support, and access to technical guidance on specialty applications.
Why Sentinel Plus SS 15 Was the Right Call for This Building
The museum needed three things from the film: UV elimination, heat reduction, and glare control — all without altering the skylight’s architectural character beyond what was necessary.
Sentinel Plus SS 15 delivered on every requirement:
- UV rejection: >99% at 300–380 nm — the critical range for artifact preservation
- Total solar energy rejected: 72% on single-pane glass (82% on insulated glass units)
- Glare reduction: 85% — transitioning the exhibition space from washed-out to gallery-appropriate lighting
- Visible light transmittance: 13% — a substantial reduction, but intentional: the museum’s priority was protection, not maximum daylight
- Solar heat gain coefficient: 0.28 — significantly reducing cooling load in a space that was absorbing solar heat through 24 unfiltered panels
The neutral stainless steel tone also gave the skylight a uniform exterior appearance — replacing what had been an aging, inconsistent surface with a clean, cohesive finish.
The Access Problem: 120 Feet, 24 Panels, Hudson River Wind
Battery Place sits at the southern tip of Manhattan, directly adjacent to the Hudson River. Wind conditions at roof height — particularly on an exposed skylight dome — are not predictable and not controllable. On the days our crew worked this project, sustained crosswinds were a constant factor.
This installation was performed by our SPRAT/IRATA-certified rope-access crew. At 120 feet above ground level, conventional access methods — scaffolding, swing stages, boom lifts — weren’t viable. Rope-access allowed us to position each technician precisely on the dome surface with full fall-arrest protection, working panel by panel without the setup time or structural load that heavy equipment would require.
90% of our 14-member team holds rope-access certification (SPRAT Level I/II or IRATA equivalent). High-access film installation isn’t a specialty add-on for us — it’s built into how we operate.
Installation Process: 24 Panels, One at a Time
Surface Preparation
Each of the 24 triangular panels required thorough cleaning before film application. Over time, debris had accumulated under the frame edges — grit, organic material, and particulate that would compromise adhesion if trapped under the film. We cleared every panel surface down to clean glass before applying solution.
This step takes time. On an exterior installation 120 feet up, it also takes patience — working in wind conditions that would compromise most adhesive applications.
Film Application
Window film on a skylight dome is not a flat surface operation. Each triangular panel introduces compound angles, and the film has to be positioned, squeegeed, and trimmed to match a non-standard geometry. Our crew worked one panel at a time, maintaining wet application conditions despite wind evaporation.
Edge Sealing
This is where exterior film installations diverge from interior work — and where many contractors get it wrong.
On an interior application, the film sits in a protected environment. Edge adhesion alone is sufficient. On an exterior surface — especially one exposed to rain, snow, wind-driven debris, and freeze-thaw cycles — the film edges need mechanical protection. We sealed every panel edge with exterior-grade caulk, bonding the film perimeter to the glass frame.
This isn’t optional. Without edge sealing, weather intrusion lifts the film from the perimeter inward. The adhesive bond fails progressively, and within one to two seasons the installation starts peeling. Edge sealing is standard protocol on every exterior film job we do — and it’s one of the reasons our installations hold up long-term in New York City weather.
The Result
The exhibition hall beneath the skylight now operates in a UV-controlled environment. Over 99% of ultraviolet radiation is blocked before it reaches the glass interior. Solar heat gain dropped substantially — measurable in the building’s cooling load during summer months. Glare, which had previously washed out the gallery lighting, was reduced by 85%.
From the exterior, the skylight transitioned from an aging, uneven appearance to a uniform stainless steel finish. The visual difference between filmed and unfilmed panels was immediately apparent during the installation — panels completed early in the project contrasted sharply with those still awaiting treatment.
When Exterior Window Film Is the Right Solution
Not every installation calls for exterior-mount film. But when it does, the reasons are usually definitive:
- Interior access is restricted or impossible — as in this skylight, or in occupied spaces where interior work would disrupt operations
- The glass type prohibits interior film — certain Low-E coatings, laminated glass, or wired glass configurations can trap heat between an interior film and the glazing, causing seal failure or thermal stress. OSW film, applied to the exterior surface, eliminates that risk
- Maximum heat rejection is required — exterior film intercepts solar energy before it passes through the glass, delivering higher TSER values than the same product applied inside
- The building facade needs a uniform appearance — exterior film can refresh aging or mismatched glazing across an entire elevation
We assess every project for interior vs. exterior suitability during the on-site visit. If the glass type, access conditions, or performance requirements point to exterior installation, we specify OSW-rated product from the start — not as a workaround, but as the engineered solution.
About This Work
Total Window Service has been installing window film across New York City since 2012. As a Solar Gard authorized dealer and Armorcoat certified installer, we source exterior-grade film products directly from manufacturers and carry full technical training on OSW product lines — including the Sentinel Plus series used in this project.
We service museums, institutional buildings, commercial high-rises, and residential properties across Manhattan, Brooklyn, Queens, the Bronx, Staten Island, Long Island, and northern New Jersey. All high-access installations are performed by SPRAT/IRATA-certified rope-access technicians under NYC DOB-compliant supervision.
