C.A. Dillon Youth Development Center Campus Roofing Repairs

The C.A. Dillon Youth Development Center houses juvenile offenders at 100 Dillon Drive in Butner, North Carolina. Cottages A and B were reportedly constructed in 1993. Cottages A and B are approximately 9,800 sq. ft., one-story mass-masonry structures with concrete plank and concrete double-tee roof decks and are nearly identical in layout. Each building is comprised of three (3) wings, and a central section of the roof area that is slightly elevated from the adjacent wings. The existing roof system consisted of a modified bitumen roof membrane, perlite insulation, and a bituminous vapor barrier directly on the concrete deck. The elevated central roof area drains to perimeter gutters that drain onto the adjacent lower roof areas, and the lower roof areas drain to internal roof drains.

Atlas performed fieldwork in August 2023 to identify current conditions, verify existing drawings and construction, and determine the extent of repairs/replacement recommended. The original scope of work for this project included installation of a roof coating system over the existing roof system. During fieldwork and an infrared survey, approximately 20% of the existing system showed significant indications of moisture. Atlas communicated these findings to the Owner along with a recommendation to move forward with full-depth roof replacements. Atlas Engineering provided design documents for a full roof replacement at both cottages, with one cottage as a bid alternate due to project funds. This project received bids under budget and was able to proceed with full-depth roof replacement at both cottages.

The new roof systems consist of a torch-applied bituminous vapor barrier installed over the existing vapor barrier, new tapered polyisocyanurate insulation (min. 3.5"), a new gypsum-based coverboard adhered in low-rise polyurethane foam, and a torch-applied, two-ply modified bitumen membrane. New perimeter sheet metal flashings, gutters, and downspouts were installed. The existing deteriorated, grouted chimney caps were repaired and coated, and new non-penetrating supports were installed under existing gas lines that ran across multiple roof areas. The existing interior drains were in poor condition with failing flashings and broken drain assembly components and were replaced with retrofit drain assemblies as part of the scope of work.