Unity Temple South 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 as seen on the following video:

South Slab As-Found Concrete Condition 11 09

When the original cinder based concrete is removed,
the original rusted steel rebar is exposed.

All failed concrete is removed and
additional rebar 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 into their forms

and the first of three portions of the roof is complete.

When concrete repairs are complete,
a new composition roof is applied.

Then the underside of the roof slab is ground smooth,

and an adhesive is applied,

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