Gemini Drain Set

Gemini Drain Set (DST) is produced with a tapered closed-cell polyisocyanurate (polyiso) foam core integrally laminated to non-asphaltic, glass fiber reinforced organic felt or inorganic coated-glass facers. The dimensionally stable Gemini® DST provides a consistent 4-way slope inward toward the center of the roof panel.

  • Available with ACFoam®-II and ACFoam®-III Facer Technology.
  • One-Piece Tapered Panel: 4’ x 4’ (1220mm x 1220mm)
  • Center Thickness: 0.5” (12.7 mm) Minimum
  • Perimeter Thickness: 1.5” (38.1 mm) Maximum
  • Slope 0.5” per ft (4.0 %)
  • Used in Built-Up (BUR), Modified Bitumen, Ballasted Single-Ply, Mechanically Attached Single-Ply and Adhered Single-Ply Roofing Systems.

Related Documents

PDF LogoGemini DST Product Data Sheet

PDF LogoACFoam® Polyiso Roof Insulation Guide

PDF Logo ACFoam® Package & Loading Guide

PDF Logo ACFoam® Fastening Pattern Guide

PDF Logo ACFoam® Polyiso Roof Insulation Guide Specification

PDF Logo Gemini DST SDS (MSDS)

PDF Logo Atlas Service Policy (Wall & Roof Insulation)