Door-Threshold-Model.pdf

This is a technical drawing document related to built-up roofing installation and door threshold construction. The drawing, designated as DWG NO. 24, provides specifications for a hot/cold door threshold assembly that incorporates re-use of an existing threshold plate. The construction details outline a multi-layered roofing system including two-ply stripping flashing, adhesive application, specified cant insulation, a new built-up roofing (BUR) membrane, gravel surfacing, and a new surface-mounted metal counterflashing. The drawing is scaled as "not to scale" (NTS) and dated 2023, serving as a technical reference for construction contractors performing roof and door threshold work.

The document specifies materials and installation methods for integrating door thresholds with existing roof deck structures. Key components include the re-use of the existing threshold plate, specified adhesive and Tremco base materials, proper flashing details to prevent water infiltration, and coordinated installation of the metal counterflashing with the new membrane system. The drawing indicates that all materials and installation methods must comply with specifications referenced in the contract documents, with particular emphasis on proper sequencing of the membrane, insulation, flashing, and counterflashing components to ensure weather-tight performance.