Inside its 14-story ‘cocoon,’ restoration work continues on Air Force Academy chapel

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Hart Van Denburg/CPR News
The cocoon housing the Cadet Chapel at the United States Air Force Academy in Colorado Springs on November 18, 2021. The building is in the midst of a $158 million renovation that includes each piece of glass and all of the aluminum panels being replaced to the original specs of architect Walter Netsch Jr.

The Air Force Academy chapel is one of the most distinctive pieces of architecture in Colorado. 

But few people have caught a glimpse of it for more than a year. That’s because the entire building is undergoing an exhaustive restoration inside a 14-story ‘cocoon.’

And it’s not likely to emerge any time soon.

The more than $150 million renovation of the Cadet Chapel at the U.S. Air Force Academy in Colorado Springs is going to take months — or perhaps more than a year, longer than originally expected; contractors are contending with more asbestos than they expected, as well as other unforeseen challenges. 

“We knew that there was significant asbestos in this building. We just couldn’t get in all the places where asbestos would be to test,” said Duane Boyle, campus architect at the academy.

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Dan Boyce/CPR News
The United States Air Force Academy chapel on Aug. 30, 2019.

The project began two years ago and has required the construction of a vast white temporary enclosure around the 150-foot-tall iconic aluminum building. This “cocoon,” as Boyle calls it, enables crews to painstakingly correct the legacy of one frugal design choice from the building’s initial construction in the 1950s and early ‘60s. 

The chapel’s architect, Walter Netsch Jr., originally conceived of an elaborate gutter system to drain off rainwater falling onto the chapel. But Boyle said that idea was abandoned in favor of caulking all the seals on the building’s network of interlocking exterior aluminum panels to cut costs.

“We had 32 miles of caulking on this building, which is kind of ridiculous when you start thinking about that,” Boyle said. 

The caulking did not stand up to the elements of the Pikes Peak region and the chapel has suffered leaks from the time it opened. Extensive water damage over the past six decades led to the restoration, which involves removing every aluminum panel and more than 20-thousand brick-sized stained glass blocks. 

What is under the temporary building now is just a massive steel skeleton covered in rust-colored primer. Inside, the building is nearly unrecognizable. Fourteen levels of scaffolding fill the main Protestant Chapel. 

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The cocoon housing the Chapel at the United States Air Force Academy in Colorado Springs is seen behind a monument to the B-29 “Superfortress” bomber, on Thursday, November 18, 2021.
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A United States Air Force cadet walks past the cocoon housing the Cadet Chapel in Colorado Springs on November 18, 2021. The building is in the midst of a $158 million renovation that includes each piece of glass and all of the aluminum panels being replaced to the original specs of architect Walter Netsch Jr.
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The cocoon housing the Cadet Chapel at the United States Air Force Academy in Colorado Springs on November 18, 2021. The building is in the midst of a $158 million renovation that includes each piece of glass and all of the aluminum panels being replaced to the original specs of architect Walter Netsch Jr.
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JE Dunn Construction Senior Project Manager Marty Rickett, left, and Air Force Academy Architect Duane Boyle walk up a ramp to enter a specially-built construction cocoon over the Cadet Chapel at the United States Air Force Academy. The building is in the midst of a $158 million renovation.
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Air Force Academy Architect Duane Boyle stands amid 14 floors of scaffolding inside the Cadet Chapel on the academy’s Colorado Springs campus on Thursday. He oversees the $158 million renovation taking place in the building.
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Workers put in special floor panels ahead of asbestos mitigation high on the scaffolding inside the Cadet Chapel at the United States Air Force Academy in Colorado Springs on November 18, 2021. The building is in the midst of a $158 million renovation.
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Marty Rickett, senior project manager with JE Dunn Construction, on the top level of 14 floors of scaffolding inside the Cadet Chapel at the United States Air Force Academy, with its roof peak stretching out behind him. The building is in the midst of a $158 million renovation, led by Dunn.
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With a latticework of scaffolding rising 14 floors behind him, Air Force Academy Architect Duane Boyle holds up a photo on his phone of what the interior of the Cadet Chapel on the Colorado Springs chapel looked like inside before work began on a $158 million renovation of the building.
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Workers in hazardous material protection suits work on asbestos mitigation in a sealed workspace high on the scaffolding inside the Cadet Chapel at the United States Air Force Academy in Colorado Springs on November 18, 2021. The building is in the midst of a $158 million renovation.
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Inside a specially-built construction cocoon over the structure, workers maneuver a lift into position on the exterior of the Cadet Chapel on the Colorado Springs campus of the United States Air Force Academy. The building is in the midst of a $158 million renovation.
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United States Air Force Cadet Brianna McVay, center, and fellow members of the academy’s Saber Drill Team practice in front of the cocoon housing the campus Chapel, which is being renovated. Thursday, November 18, 2021.

Many of the items that used to be inside, from the pews to the facility’s two massive church organs, are also being fully restored either due to water damage or disrepair. 

Boyle said dealing with the additional asbestos contamination found in the chapel will push the project past its original 2023 completion date, though he is not prepared to estimate how much longer it might take. 

But the plan remains the same: eventually every pew, organ pipe, aluminum panel and stained glass brick will be refinished or meticulously recreated and put back exactly where it was before, with one important addition. Crews are finally installing Netsch’s original drainage system to replace the ineffective miles of caulking.

Gazing at all the work around him, Boyle recently offered a bold assessment of the undertaking he is in charge of: “I think it would compete as one of the most complicated and intensive historic preservation projects of all time.”