[CCMC evaluation requirements] CAN/ULC-S706-02, Type 2, Class 1

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 Evaluation Listings apply to insulating fibreboard (with or without a facer or coating) used as roof board, wall sheathing, backerboard, or interior boards such as building boards (sound-deadening), ceiling tiles and lay-in panels.

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.

Maximum dimensions: The maximum dimensions for roof board 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. The maximum deviation measured diagonally from corner to corner for ceiling tiles and lay-in panels must not be greater than 2 mm.

Table 2. Physical properties
Product Types Surface Burning Characteristics 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)
Type II Class 1 NA NA NA 10.0 0.5 0.493
Table 3. Mechanical strength properties for Type II, Class 1 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 30 350 24 100
12.5 30 350 24 100
25.4 60 350 24 100


© 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:

Additionally, CAN/ULC-S706-02 requires that packaging for the insulation must be identified with the following information:

  • brand name and the name of the manufacturer or supplier;
  • identification of the manufacturing facility location;
  • type of insulation and its intended use;
  • net content of package in m2;
  • design linear dimensions of the pieces in the package in mm;
  • design thickness in mm;
  • thermal resistance in (m2·K)/W to one decimal place;
  • date of manufacture or shift code;
  • statement that the product complies with the standard; and
  • for preformed insulation without a membrane, a cautionary statement as follows: “CAUTION: Maintain building, electrical, gas and oil safety code required clearances between the insulation and heat emitting devices, such as fuel-burning appliances, chimneys, pipes, ducts and vents to these appliances (at least 50 mm) and recessed light fixtures (at least 75 mm).”

Where applicable, the product must bear additional information as follows:

  • if the product is intended for application at thicknesses other than the design thickness, the thermal resistance for each intended installed thickness must be shown. These thermal resistance values and thicknesses must be given equal prominence on the packaging and the units used must be consistent;
  • the thermal resistance values and the corresponding thicknesses must also be displayed on the material at every 1.2 m length (alternatively a simple code may be used);
  • any necessary user safety information, unless a separate information sheet is provided; and
  • any additional information required by applicable acts and regulations.

Published CCMC evaluations

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

CCMC number:Manufacturer:Product names::
13186-LBlue Ridge Fiberboard Inc. Structodek® High Density Roof Board, HP Recovery Board

Code references

This standard is not referenced in the National Building Code of Canada
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