(10) ROOF DRAIN DETAIL (1).pdf

This is a technical specification document for the LA-PR-24 roofing project, detailing roof drain installation and waterproofing requirements. The project involves the restoration and installation of a liquid-applied waterproofing system around an existing roof drain assembly. The scope includes removal of existing flashings, installation of new fluid-applied systems, and integration of reinforcement materials into a cast-iron drain bowl with clamping ring and drain strainer. Key specifications require priming of the substrate per manufacturer recommendations, full saturation or encapsulation of reinforcement in base coat, trimming of existing flashings to the bowl transition point, and extension of the liquid-applied system into the drain. The reinforcement must be cut into triangular pieces that overlap into the bowl, with new flashings fully encapsulating old flashings.

The document emphasizes substrate preparation and quality control measures, including cleaning existing roof membranes to bright metal and applying primer before installation of new systems. The liquid-applied base coat serves as the primary waterproofing material with reinforcement to ensure durability and proper water drainage. Existing insulation and restoration deck clamp details are noted as integration points. No pricing information, contract timeline, bidding requirements, or award details are included in this technical specification sheet, which functions as a construction detail guide rather than a solicitation or contract agreement document.