[CCMC evaluation requirements] CAN/ULC-S706-09, Type 2, Class 2

From: National Research Council Canada

This document provides a summary of the minimum requirements imposed by the Canadian Construction Materials Centre (CCMC) for all evaluations based on the below criteria document. Additional requirements may be imposed by the CCMC when necessary for a particular evaluation, and are detailed in the individual evaluation.

Criteria document


These evaluations apply to wood fibre manufactured in the form of faced or unfaced boards, sheets or panels used as insulation for floors, ceilings, walls and roofing systems, whether applied on a building site or in a prefabrication (manufacturing) facility.

Material requirements

The evaluation holder must demonstrate that the product meets the following requirements (additional requirements may be imposed by the CCMC when necessary, and are detailed in the individual evaluation):

Table 1. Thickness tolerances
Thickness of fibreboard (mm) Allowable variation (%)
9.5 ±9
11.0 ±9
12.5 ±9
20.0 ±7
25.4 ±7
38.0 ±6
51.0 ±6

Other Detailed Requirements

Length and width: The tolerance for the length and width of any size panel must be +0, –5 mm/m. The tolerance for Type II, Class 2 must be measured from the scant cut. The total tolerance in any dimension must not exceed 10 mm.

Maximum dimensions: The maximum dimensions for Type II, Class 2 laminated products must be 1.2 m in length and width excluding offset and vented edges.

Straight edge: Squareness of any board panel must not deviate from a right angle by an amount greater than 2 mm/m.

Table 2. Physical properties
Product types Surface burning characteristics maximum Water vapour permeance [ng/(Pa·s·m2)] Maximum air leakage @ 75 Pa [L/(s·m2)] Maximum water absorption (% Volume) Maximum linear moisture expansion (%) Thermal resistance for 25 mm (m2·°C/W) minimum
Type II, Class 2 n/a n/a n/a 10.0 0.5 0.455
Table 3. Mechanical strength properties for Type II, Class 2 products:
Thickness (mm) Transverse load at rupture (N) minimum average Tensile strength parallel to the surface (kPa) minimum average Tensile strength perpendicular to the surface (kPa) minimum average Compressive strength 10% deformation (kPa) minimum average
11.0 50 1 000 30 100
12.5 50 1 000 30 100
25.4 160 1 000 30 100
38.0 180 1 000 30 100
51.0 200 1 000 30 100

© Underwriters Laboratories of Canada Inc. Reprinted with permission. This material is not the complete and official position of ULC Standards on the referenced subject, which is represented only by the ULC Standard in its entirety.

Installation requirements

The CCMC requires that evaluation holders provide instructions for the installation of the product(s) that:

Manufacturing requirements

The CCMC requires that evaluation holders, at a minimum, demonstrate that the associated production process:

Labelling requirements

The CCMC requires that evaluation holders ensure that product labels:

In addition, CAN/ULC-S706-09 requires that packaging for the insulation be identified with the following information:

  • brand name;
  • name and address of the manufacturer;
  • type and class;
  • specified dimensions;
  • thermal resistance for applicable materials in (m2·K)/W;
  • air permeance characteristic for applicable materials in L/(s·m2) at 75 Pa pressure difference;
  • water vapour permeance for applicable materials in ng/(Pa·s·m2);
  • lot number or date code; and
  • the phrase “CAN/ULC-S706.”

Classification information

Products falling within the scope of this document are commonly classified by:


  • 06 16 13 Insulating Sheathing
  • 07 20 00 Thermal Protection
  • 07 21 13 Board Insulation
  • 07 22 00 Roof and Deck Insulation
  • 07 22 16 Roof Board Insulation

Published CCMC evaluations

The following products have been evaluated to these requirements by the CCMC:

CCMC number:Manufacturer:Product names:
03240-LBuilding Products of Canada Corp.Esgard
10617-LMateriaux Specialisés Louiseville (MSL)Louiseville Speciality Fibreboard

Code references

National Building Code of Canada 2015

Code references Code provision or asphalt-impregnated fi ... Materials Standard
Table Applicable to Environmental Separators and Assemblies Exposed to the Exterior
Table Sheathing Thickness and Specifications
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