Unity Temple
Frank Lloyd Wright’s historic Unity Temple in Oak Park, IL
is suffering from serious roof concrete failure as it marks its 100th anniversary. 
As the owner’s representative for the Congregation, Chicago Project Management will place primary focus on keeping the sanctuary as safe as possible during the on-going work.
Damage to the south ceiling area.
The current phase will repair the roof / ceiling slab located directly above the organ and pulpit. 
The first challenge for the General Contractor, Zera Construction, is the erection of the interior scaffold that supports the roof during removal and replacement. 
And it is all hidden by Chicago Project Management installed muslin drapes, just in time for two scheduled weddings.
Roof Repairs
The shoring continues to pass the load through the foyer and sanctuary roofs to support the cantilevered slabs typical of Frank Lloyd Wright designs. The roof slab concrete has deteriorated significantly in areas where the leaking roof membrane has subjected it to years of water damage. 
When the original cinder based concrete is removed, the original rusted steel rebar is exposed. 
All failed concrete is removed and additional rebar is installed. 
Zinc anodes are attached to the sandblasted and coated steel to greatly increase its life. 
While the concrete is brought to the roof in buckets. 
The CTL Group performs testing to confirm the light weight concrete mix meets their specifications. 
And then the crew from Zera Construction carefully pours the concrete in their forms. 
and the first three portions of the roof is complete. 
When concrete repairs are complete, a new composition roof is applied. 
The the underside of the roof slab is ground smooth, 
and an adhesive is applied.