Materials:Foamular F350 (Type 4)

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Materials:Foamular F350 (Type 4)

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: Owens Corning Canada
Accepted for RoofStar Guarantee Program
Date TBA
Product Summary

FOAMULAR® F350 insulation is an extruded, Type 4 CAN/ULC-S701/CAN/CGSB-51.20-M87 polystyrene rigid board designed specifically for roof applications. It is suitable for use in both protected membrane and conventional roof assemblies

The extruded board has smooth, high-density skins, shiplap edges on four sides and a very dense closed-cell foam structure. Board size is 600 mm x 1200 mm (2' x 4'), in thickness ranging from 25 mm to 100 mm (1" to 4"). FOAMULAR® F350 has one of the highest thermal resistance values, an aged (RSI value of 0.88 per 25 mm (R 5.0 per inch). It has excellent water resistance characteristics (absorption of less than 0.7%) and a high compressive strength of 240 kPa (35 psi).

FOAMULAR® F350 is ideal for use in both standard and lightweight protected membrane roof systems and can be adhered or loosely applied. It is lightweight, easy to cut and simple to install year round.

Click below for the Technical Data Sheet
Technical Data Sheet

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