Materials:SRI (Solar Reflective Concrete Topped XPS)

Jump to: navigation, search

Materials:SRI (Solar Reflective Concrete Topped XPS)

Notice to the Reader:

The roofing assembly / material information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

Manufacturer: Tech-Crete Processors Ltd.
Accepted for RoofStar Guarantee Program
Date TBA
Product Summary

Tech-Crete™ insulated roof panels are 600 mm (2 ft. X 4 ft) composite panels of extruded, expanded, Type 4 CAN/ULC-S701-97 / CGSB-51.20-M87 polystyrene foam, with a factory applied 9.5mm (3/8”) latex modified concrete topping. They are designed as lightweight, self-ballasted, interlocking insulated panels for loose application on top of well drained roof membranes in a low-slope, protected membrane roof assembly.

Tech-Crete panels are tongue and grooved on the longitudinal sides, with a butt edge on the lateral ends. Each board weighs minimum 16.3 kg (36 lb.) creating an insulated panel assembly of about 22 kg/m² (4.5 lb/ft². Panels are available in standard thickness of 50 mm (2”) and 100 mm (4”). In addition, 75 mm (3”) thick panels are available as special order.


The base insulation is Dow Roofmate*, a superior moisture resistant material (absorption less than 1%) with a high thermal resistance value of 0.88 (R 5.0 per inch.), and high compressive strength of 240 kPa (35 psi).


The latex modified concrete topping is available in two standard colours, both with a relatively smooth surface:

  • CTI (Concrete Topped) Insulated Roof Panels are manufactured as a standard concrete grey colour.
  • SRI (Solar Reflective) Insulated Roof Panels are manufactured with a full depth white concrete topping.


Latex modified concrete is very durable and chemically resistant. It can be cut with a masonry saw.

  • Concrete topped insulation roof panels can accept occasional maintenance foot traffic, however, they are not intended for use as a patio, plaza deck or construction platform.
  • As with other cementitious products, concrete topped insulation roof panels can become stained by efflorescence if stored unprotected for extended periods. This efflorescence will not be so obvious on SRI panels, however, care in scheduling and handling is required to ensure the white topping remains clean.
  • Concrete topped insulation roof panels are compatible with most commonly used membranes, however, in some cases a slip sheet between membrane and insulation is required to minimize cracking of the concrete topping.


Complies with the following codes:

  • CCMC - Evaluation Listing #04888-L
  • CAN/ULC S107, Type 4 - standard for Thermal Insulation Polystyrene Boards.
  • CAN/ULC S107-03 Methods of Fire Tests of Roof Coverings

™ Trademark of Tech-Crete Processors Ltd. *Trademark of the Dow Chemical Company

Click below for the Technical Data Sheet (TBA).

Back to Accepted Materials