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Technical Data & Literature - SGI

Quik-Therm Sub Grade Insulation (SGI) consists of closed cell, lightweight and resilient expanded polystyrene (EPS) layered on both sides with advanced metallic polymer facers. SGI’s facer technology provides superior durability and resiliency. SGI is designed for below grade applications such as exterior concrete walls and beneath concrete slabs and floors.

Technical Downloads
 SGI Tech Data Sheet   SGI Radon Sealing
SGI Tech Brochure   MSDS SGI
SGI Compressive Strength   QT Product Summary Sheet
SGI vs. Competition
  Compare EPS to XPS
Compare Rigid Insulations   EPS Retains R-Value -
NRC Canada
NRC-EPS In-Situ Test   EPS Outperforms XPS -
15 yr in-situ Study
US Dept Energy XPS   XPS Insulation Extracted After
Field Exposure Confirms
High Water Absorption
& Diminished R-Value



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