Description

Gemini Drain Set (DST) is produced with a 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 positive 4-way slope to the roof drain.
  • Available with ACFoam®-II, ACFoam®-III and Facer Technology
  • One-Piece Pre-Fabricated Tapered Panel: 4’x4’ (1220mm x 1220mm)
  • Center Thickness: 0.5” (12.7mm) Minimum
  • Perimeter thickness: 1.5” (38.1mm) 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
THICKNESS PRODUCT DIMENSIONS PACKAGING SPECIFICATIONS
min. max. width length pieces per bundle bundles per unit
0.0″ 1.5″ 12″ 96″ 12″ 8″
0.0″ 2.0″ 24″ 96″ 10″ 4″
1LTTR VALUE THICKNESS 2RSI SLOPE
in mm per ft. percent
4.3 0.0–1.5 0.0–38.1 0.76 1.5″ 12.5
5.7 0.0–2.0 0.0–50.8 1.00 1.0″ 8.0

1 LTTR (long term thermal resistance) values were determined in accordance with CAN/ULC-S770-09. Test samples were third-party selected and tested by an accredited material testing laboratory. The LTTR results were reviewed by FM Global and certified by the PIMA Quality Mark Program. 2 RSI is the metric expression of R-value (m2 • K/W).