Photo gallery

B & M Roofing of Colorado developed these figures as a guideline to approach the initial water-density and weight-quantification processes.

Photo courtesy of B & M Roofing of Colorado Inc., Boulder.

Roof deck deflection was apparent in this mezzanine area.

Photo courtesy of B & M Roofing of Colorado Inc., Boulder.

A roofing worker hunts for drains at the far end of the roof.

Photo courtesy of B & M Roofing of Colorado Inc., Boulder.

An access point was cleared.

Photo courtesy of B & M Roofing of Colorado Inc., Boulder.

Dislodged ceiling tiles were evidence of roof deck deflection.

Photo courtesy of B & M Roofing of Colorado Inc., Boulder.

A No. 43 base sheet was installed on several roof areas.

Photo courtesy of B & M Roofing of Colorado Inc., Boulder.

Forty acres (16 hectares) of gardens surround the Cranbrook House.

Photos courtesy of Allen Brothers Inc., Rochester Hills, Mich.

An Allen Brothers worker cuts clay tiles.

Photos courtesy of Allen Brothers Inc., Rochester Hills, Mich.

New Ludowici Roof Tile tiles replaced original 85-year-old tiles from the same manufacturer.

Photos courtesy of Allen Brothers Inc., Rochester Hills, Mich.