[CCMC 14036-R] CCMC Canadian code compliance evaluation

From: National Research Council Canada

In most jurisdictions this document is sufficient evidence for approval by Canadian authorities.

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Code compliance opinion

It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as thermal barrier of spray polyurethane foam insulation in accordance with the conditions and limitations stated in this evaluation, complies with the following code:

National Building Code of Canada 2015

ID Code provision Solution type
03-01-04-02-01-a-003.1.4.2.(1)(a) Protection of Foamed PlasticsAlternative
03-01-05-15-00-0-003.1.5.15.(2) Except as provided in Sentences 3.1.5.15 ...Alternative
09-10-17-10-01-a-009.10.17.10.(1)(a) Protection of Foamed PlasticsAlternative
09-25-02-03-00-0-009.25.2.3.(7) Insulation located in areas where it may ...Alternative
09-29-04-00-00-0-009.29.4. PlasteringAlternative
09-29-05-00-00-0-009.29.5. Gypsum Board Finish (Taped Joints)Alternative
09-29-05-02-00-0-009.29.5.2. MaterialsAlternative
09-29-06-00-00-0-009.29.6. Plywood FinishAlternative
09-29-07-00-00-0-009.29.7. Hardboard FinishAlternative
09-29-08-00-00-0-009.29.8. Insulating Fibreboard FinishAlternative
09-29-09-00-00-0-009.29.9. Particleboard, OSB or Waferboard FinishAlternative

Ontario Building Code

Ruling No. 17-04-341 (14036-R) authorizing the use of this product in Ontario, subject to the terms and conditions contained in the Ruling, was made by the Minister of Municipal Affairs and Housing on 2017-03-24 (revised 2018-04-12) pursuant to s.29 of the Building Code Act, 1992 (see Ruling for terms and conditions). This Ruling is subject to periodic revisions and updates.


The above opinion is based on the evaluation by the CCMC of technical evidence provided by the evaluation holder, and is bound by the stated conditions and limitations. For the benefit of the user, a summary of the technical information that forms the basis of this evaluation has been included.

Product information

Product name

DC 315 Intumescent Coating

Product description

The product is a proprietary liquid formulation that is delivered in pails and sprayed in the field by licensed installers. The required coating thickness, specifically the wet film thickness (WFT) measured by the manufacturer’s certified installer, is specified below based on the performance required to comply with the local building code provisions. The finish coating is white in colour (see Figure 2) which intumesces (i.e., expands) when heated/exposed to fire and provides the required thermal barrier protection.

Thermal barrier

The NBC 2015 specifies that foam plastic insulation must be protected from the adjacent space by a thermal barrier. This Report addresses the performance of the product when it is installed as the designated thermal barrier, solely for medium density (MD) spray polyurethane foam insulation as the substrate. The MD spray urethane insulation shall be compliant with CAN/ULC-S705.1-01, “Thermal Insulation – Spray Applied Rigid Polyurethane Foam, Medium Density – Material Specification,” shall possess a CCMC Listing and shall be installed in compliance with CAN/ULC-S705.2-05, “Thermal Insulation – Spray Applied Rigid Polyurethane Foam, Medium Density – Application,” following the Report Holder’s Site Quality Assurance Program (SQAP).

Part 9 and part 3 combustible construction

The interior finishes specified in Subsections 9.29.4. to 9.29.9. of Division B of the NBC 2015 are permitted thermal barrier solutions for use in buildings permitted to be of Combustible Construction. In lieu of these interior finishes, the installer/contractor may have this intumescent coating product installed, to protect combustible spray polyurethane insulation only, in order to satisfy code requirements for the protection of foamed plastic insulation specified in Clauses 9.10.17.10.(1)(a) and 3.1.4.2.(1)(a) allowing for the occupancy of a building. An example where this product may be used could include an unfinished basement, garage or attic space.

Part 3, non-combustible construction

As specified in Sentence 3.1.5.15.(2) of Division B of the NBC, a foamed plastic insulation must be protected from the adjacent space by any of five (5) prescribed acceptable solutions, specifically:

  1. 12.7-mm gypsum board on framing;
  2. plaster and lath mechanically fastened (no thickness given);
  3. masonry (no thickness given);
  4. concrete (no thickness given), or
  5. any thermal barrier that meets Classification B as per CAN/ULC-S124-06, “Test for the Evaluation of Protective Coverings for Foamed Plastic.”

Subsequent to original the Part 9 product evaluation, the proponent sought compliance as an alternative solution to the acceptable solutions outlined in Sentence 3.1.5.15.(2) of Division B of the NBC 2015. The equivalency to Part 3 non-combustible buildings and results are discussed in "Part 3, non-combustible construction" and outlined in Alternative solution for part 9 and part 3: summary table whereby this product has demonstrated to provide ‘equal or better’ performance than the prescribed acceptable solutions in (a) and (e) above.

N.B: This product has not qualified for use in noncombustible buildings, greater than 18m and that are not sprinklered (Sentence 3.1.15.(3))

Levels of performance  

Part 9 and part 3, combustible construction

As noted in Provincial and Territorial consultation of this Report, the provinces and territories have been consulted on what would constitute the Code benchmark performance that should be considered from the list of interior finishes outlined in Subsections 9.29.4. to 9.29.9 of Division B of the NBC 2015. The opinions varied based on whether the minimum performance of the interior finish (i.e., 11-mm fibreboard) is appropriate or whether the minimum performance being currently provided in houses as common practice (i.e., 12.7-mm drywall) should be the benchmark. In addition, the provinces and territories provided an opinion as to whether the spray polyurethane in the cavity ‘only’ should be protected or whether the lumber studs and/or ceiling joists should also be protected. The recommendations are provided in Provincial and Territorial consultation. However, the provincial and territorial regulators acknowledge that the approval rests with the local AHJ. Therefore, the performance levels provided in Table 1 and, whether only the cavity insulation needs to be protected, is for decision-making by the local AHJ in their approval process.

The performance of the intumescent coating as an effective thermal barrier was determined based on the “time-to-flashover” within a full-room fire test. Thermal barrier performance in fire outlines the test method and time-to-flashover criterion. When the product is to be installed as the designated thermal barrier over MD spray polyurethane, the DC 315 thermal barrier comprises two (2) spray components: a primer and the “DC 315 Intumescent Coating” at a specific thickness based on the target performance being sought by the AHJ (see Chart for Thickness for Target Performance).

 
Table 1. Chart for thickness for target performance
Performance level in CAN/ULC-9705-13 testTable footnote (1) Equivalence Primer thicknessTable footnote (2) (wet film thickness [WFT]) DC 315 thickness (WFT)
10 min. to flashover Interior finishes described in Subsections 9.29.4. through 9.29.9. 3 mil 20 mil
20 min. to flashover 12.7-mm gypsum board 3 mil 20 mil
 

Part 3, non-combustible construction

As outlined in  Part 9 and part 3, combustible construction of this Report, a second round of consultation was undertaken with the provinces and territories (P/T) with respect to compliance of the product with any of the five (5) acceptable solutions outlined in Sentence 3.1.5.15.(2) of Division B of the NBC 2015 (see 2.1.2. above). Some P/T members considered compliance with Clause 3.1.5.15.(2)(a) was already achieved by the product (at 24 mil thickness), i.e., it demonstrated equivalency to 12.7 mm gypsum board. However, some questions arose concerning the equivalency in performance to other Part 3 acceptable solutions. The acceptable solutions in Clauses 3.1.5.15.(2)(b) to (d) do not specify an explicit material thickness for comparison. Equivalency testing to the acceptable solution in Clause 3.1.5.15.(2)(e) was considered to determine where this product (at 24 mil thickness) lies with respect to more than one acceptable solution, as was done with the Part 9 acceptable solutions covered in "Results of Thermal Barrier Performance Fire Testing − Acceptable and Alternative Solutions".

Therefore, in addition to the detailed Part 9 full-scale room testing carried out in accordance with CAN/ULC-9705 and described below for Part 9, a second phase of testing in a full-scale room fire test was undertaken to determine the benchmark performance of the acceptable solution specified in Sentence 3.1.5.15.(2)(e), which pertains to any thermal barrier that meets Classification B as per CAN/ULC-S124. The intent of testing more than one NBC-specified acceptable solution, following the same full-scale room test, is so that a proper comparison can be made to determine equivalency in performance. Alternative solution for part 9 and part 3: summary table shows a Summary Table (Summary Table of DC 315 Performance versus Part 9 and Part 3 Acceptable Solutions) outlining the product’s equal or better performance as an alternative solution against the listed NBC-prescribed acceptable solutions for both Part 9 and Part 3.

Installation

The product is applied by installers approved by the manufacturer, International Fireproof Technology Inc. (IFTI), which follows the IFTI field quality assurance program (FQAP) for their site-manufactured thermal barrier.

an image of an example of application

Figure 1. Example of application where the product may serve as a thermal barrier over MD spray urethane ceiling cavity insulation (and joists) within the ceiling of wood-frame garages. (Photo shows spray foam still to be protected with the DC 315 thermal barrier.)

 
application where the product (white) serves as thermal barrier

Figure 2. Example of application where the product (white) serves as the thermal barrier over MD spray urethane cavity insulation (and overexposed studs/joists) in wood-frame basement walls and ceiling.


Note to Figures 1 and 2: Currently, panel products installed as the designated thermal barrier protect both the foam plastic within the cavity and the wood stud or joist. The protection of the studs is not required by Code. As noted below, some regulators opined that in some cases both the foam plastic and the stud or joist should be protected. In particular, in the case of prefabricated I-joists as supporting floors above the garage, it was considered appropriate to protect the exposed I-joist web and flange as well as the MD spray polyurethane within the joist space.

Manufacturing plants

This evaluation is limited to products produced at the following plants:

Product nameManufacturing plants
Irvine, CA, USTaoyuan, Republic of China
DC 315 Intumescent CoatingProduct evaluated by the CCMCProduct evaluated by the CCMC

Product evaluated by the CCMC Indicates that the product from this manufacturing facility has been evaluated by the CCMC

  Conditions and limitations

The CCMC’s compliance opinion is bound by this product being used in accordance with the conditions and limitations set out below.

  • The “DC 315 Intumescent Coating” may serve as a thermal barrier over MD spray polyurethane foam insulation in Part 9 and Part 3 Buildings as outlined below.
  • Where the NBC Part 9 interior finishes (Clause 9.10.17.10.(1)(a) of the NBC 2010/2015) will be deemed acceptable by the AHJ, as the performance benchmark for this alternative solution, the DC315 protection which prevents the foamed plastic from reaching flashover in the first 10 min following CAN/ULC-9705 shall be installed.
  • For Part 9 or Part 3 buildings permitted to be of combustible construction, where the 12.7-mm gypsum board will be deemed acceptable by the AHJ as the performance benchmark for this alternative solution, the DC315 protection which prevents the foam plastic from reaching flashover in the first 20 min following CAN/ULC-9705 shall be installed.
  • For Part 3 buildings required to be on non-combustible construction, where acceptable solutions of 12.7-mm gypsum board (Clause 3.1.5.15.(2)(a)) or Classification B, ULC S124-compliant product (Clause 3.1.5.15.(2)(e)) are deemed acceptable by the AHJ as the performance benchmark for this alternative solution, the DC315 protection which prevents the foam plastic from reaching flashover in the first 20 min following CAN/ULC-9705, shall be installed.
  • In New Brunswick, the Fire Prevention Act requires that foamed plastic insulation must be protected by one of the following: a thermal barrier which provides 15 minutes of protection when tested in accordance with ULC s101, 16-mm thick gypsum board, or any other material which the fire marshal approves. Determining equivalent performance of the DC315 to these acceptable solutions was outside the scope of this evaluation.
  • When the spray polyurethane is installed as a cavity insulation, the insulation shall be protected and the exposed portion of wall studs or ceiling joists shall also be protected by the DC 315 coating when required by the local AHJ.
  • The installation shall be carried out by IFTI-approved installers carrying an IFTI licensing card and following the IFTI field quality control procedures.
  • The product must be clearly identified with the phrase “CCMC 14036-R” on the DC 315 container label.

  Technical information

This evaluation is based on demonstrated conformance with the following criteria:

Evaluation requirements
Criteria number Criteria name
CCMC-TG-099648-15CCMC Technical Guide for Intumescent Coatings as a Thermal Barrier over Spray Urethane Insulation

CCMC’s Technical Guide for “Intumescent Coating as a Thermal Barrier over Spray Urethane Insulation” sets out the nature of the technical evidence required by CCMC to enable it to evaluate a product as an alternative solution in compliance with the NBC 2015. The Report Holder has submitted test results and other data for CCMC’s evaluation. Testing was conducted at an independent laboratory recognized by CCMC. The corresponding test results for the “DC 315 Intumescent Coating” are summarized below.

Performance requirements

Characteristic properties ─ paint/coatings

Table 2. Results of testing the material properties of the product
Property Unit Test method Table footnote (1) Requirement Result
Flashpoint (Pensky-Martens closed cup) ⁰C As per Section 3.1 of CGSB 1-GP-71 (uses apparatus of ASTM D 93) Min. 35 > 100°C
Consistency Kerbs As per Section 4.5 of CGSB 1-GP-71 (uses apparatus of ASTM D 562) Min. 85 850 – 1 700
Drying time - As per Section 5.1 of CGSB 1-GP-71 or ASTM D 7488 Report value To recoat: Up to 6 h Dry through: 24 h
Solid content % As per Section 2.2 of CGSB 1-GP-71 or ASTM D 2697 Min. 40% 67%
Lead content ppm Health Canada Method C02 < 100 PassTable footnote (1)
Phthalates content ppm Health Canada Method C34 < 1% PassTable footnote (2)
Volatile organic compound (VOC) g/l ASTM D 2369 < 50 47

Resistance to deterioration - paint/coatings

Table 3. Results of Testing the Material and Environmental Conditioning/Aging of the Product
Property Test method Requirement Result
Flexibility ASTM D 522 No cracking or peeling on a 12.5-mm mandrel Pass 9.5 mm (3/8 in.)
Self-lifting As per Section 132.1 of CGSB 1-GP-71 No blistering, wrinkling, loosening, softening or other defects due to the application of a second similar coat N/A DC 315 is applied in one coat
Adhesion to substrate at specified thickness (with primer) ASTM D 3359, Method A Min. adhesion rating: 4A 5A

Adhesion to substrate – resistance to high humidity

ASTM D 3359, Method A after conditioning

Min. adhesion rating: 4A

5B

Adhesion – pulloff strength

ASTM D 4541

Report value

50 psi

Impact resistance, 7-days dry

ASTM D 2794

Direct: 30 in./lb Indirect: 10 in./lb

Table footnote (1)

Moisture resistance

ASTM D 4585 Moisture Protocol

No blistering, wrinkling or loss of adhesion (Adhesion ASTM D 3359)

Pass

Fungal/mildew resistance

ASTM C 1338

No more fungal growth than control specimen

PassTable footnote (2)

Water vapour permeance (WVP)

ASTM E 96/E 96M-13 (Desiccant Method)

Report value

977 ng/(Pa·s×m2)

Thermal barrier fire performance ─ contribution to fire growth (flashover)

See Thermal barrier performance in fire in this Report for performance-based ISO/CAN/ULC-9705 full-room test to evaluate the time-to-flashover of the thermal barrier.

 
Table 4. Results of thermal barrier performance fire testing − acceptable and alternative solutions
Property Test method Result time to flashover (minutes:seconds)
NBC acceptable solutions – benchmark performance
11.7-mm oriented strand board (OSB) ISO/CAN/ULC-9705 Full-scale room test

2:15

13-mm oak-veneered plywood/13-mm spruce -plywood/11.9 DF plywood

1:18 to 3:03

13-mm particleboard

2:20 to 2:36

Insulating wood fibreboard

0:59

9.5-mm gypsum board N/A Table footnote (1)
Cementitious ULC-listed Classification B, CAN/ULC-S124 compliant thermal barrier

14:10

Common practice (as-built environment)
12.5-mm regular gypsum (MD spray urethane cavity insulation and studs also protected)

ISO/CAN/ULC-9705 Full-scale room test

20:00Table footnote (2)

  Alternative solutions
IFTI – DC 315: Two alternative thermal barrier applications
3 mil (WFT) primer and 20 mil (WFT) DC 315 – over MD SPUF (no exposed wood studs)Table footnote (3)

ISO/CAN/ULC-9705 Full-scale room test Target 10 minutesTable footnote (4) for equivalency to minimum of NBC-acceptable solutions

11:00

3 mil (WFT) primer and 24 mil (WFT) DC 315 – over MD SPUF (no exposed wood studs)Table footnote (3)

Target 20 minutesTable footnote (5) for equivalency to 12.7-mm regular gypsum

20:00Table footnote (2)

IFTI – DC 315: Thermal barrier fire testing with mechanical damage to coating
35 mil WFT with damage/exposed MD SPUF over burner areaTable footnote (6)

ISO/CAN/ULC-9705 Full-scale room test

20:00Table footnote (2)

IFTI – DC 315: Thermal barrier performance over various CAN/ULC-S705.1-compliant MD SPUFTable footnote (6)
Benchmark SPUF (CCMC-evaluated): 3 mil (WFT) primer and 20 mil (WFT) DC 315

ISO/CAN/ULC-9705 Full-scale room test

10:00

3 mil (WFT) primer and 24 mil (WFT) DC 315

20:00

9 medium density CAN/ULC-S705.1-compliant foams tested

Full-scale room testsTable footnote (7)

Equivalent performance has been demonstrated for CAN/ULC-S705.1-compliant MD spray urethane insulation.

Resistance to Mechanical Damage

Table 5. Results of testing the insulation for resistance to mechanical damage
Property Test method Result
Concentrated load
  ASTM E 661Table footnote (1)  
Benchmark (9.5-mm gypsum board)

Full-scale floor panel test procedure Ultimate load applied with a 75-mm (3-in.) disc.

154 lb.

Benchmark (12.7-mm gypsum board)

183 lb.

DC 315 over MD SPUF (18 mil WFT)

376 lb.

DC 315 over MD SPUF (24 mil WFT)

423 lb.

 

DC 315 with SPUF > Benchmark

Concentrated load following impact loadTable footnote (2)
 

ASTM E 661

 

Benchmark (9.5-mm gypsum board) 150 mm impact, 77 lb. proof load

Fracture

Benchmark (12.5-mm gypsum board)

300 mm impact, 92 lb. proof load

Fracture

DC 315 over MD SPUF (18 mil WFT) 450;mm impact, 182 lb.Table footnote (3)

Small chips (12.5 mm diameter)

DC 315 over MD SPUF (24 mil WFT) 450 mm impact, 182 lb.Table footnote (3)

Small chips (5 mm diameter)

 

 

DC 315 with SPUFTable footnote (4) > Benchmark

Falling Ball ImpactTable footnote (5)
 

ASTM D 5420

 

Benchmark (9.5-mm gypsum board)

30 in.

Cracking at back

42 in.

Cracking at front

72 in.

Penetration foam exposed

Benchmark (12.7-mm gypsum board)

24 in.

Cracking at back

42 in.

Cracking at front

78 in.

Penetration foam exposed

DC 315 over MD SPUF (18 mil WFT)

48 in.

Cracking

> 48 in.

No complete exposure of foam

DC 315 over MD SPUF (24 mil WFT)

48 in.

Cracking

> 48 in.

No complete exposure of foam

 

DC 315 with SPUFTable footnote (4) > Benchmark

Additional performance data requested by the report holder

Data in this section does not form part of CCMC’s Code compliance opinion section.

  • Flame-spread rating as per ULC S102: over MD SPUF = 25, over cement board = 0.
  • DC 315 meets regulations related to contact with food (i.e., potato sheds, etc.)
Additional health and safety data identified by third parties

A provincial and territorial consultation was conducted to determine the expected scenarios for minimum benchmark performance for both thermal barriers over MD SPUF and minimum mechanical protection of insulation. The consultation findings are outlined in Provincial and Territorial consultation and are intended to provide the necessary technical information for decision making by the local AHJ.

Thermal barrier performance in fire  

For combustible construction, the NBC 2015 requires foamed plastic insulation that forms part of a wall or ceiling assembly be protected from adjacent spaces other than concealed spaces in attic or roof spaces, crawl spaces and wall assemblies. The intent of this requirement is to limit the probability that foamed plastic insulation will become exposed to a fire or subjected to high temperatures, which could lead to its ignition and contribution to early fire growth and spread and could in turn negatively affect the ability of persons to escape from a fire and cause them harm. The role of the thermal barrier is to retard the contribution of the foam plastic insulation to the fire growth to allow for occupants to evacuate before flashover. The benchmark time-to-flashover is based on the current known performing thermal barriers providing acceptable performance (i.e., acceptable solution).

The CAN/ULC-S124 is a test procedure with a pass or fail assigned, which is prescriptive, with respect to the temperature rise behind the designated thermal barrier. The prescriptive criterion of temperature rise is based on measurements of traditional panel products. However, an intumescent coating requires initial heating before it intumesces. During this initial period, the temperature rises at the interface between the intumescent coating and the foam plastic and may exceed those specified in CAN/ULC-S124 for Classification B.

A more complete assessment of a fire situation is through a performance-based approach as with full-scale room tests. A performance-based full-room test method, CAN/ULC- 9705, which is similar to NFPA 286, was recently promulgated in Canada. Although this test method is similar to the NFPA test method, CAN/ULC- 9705 is considered more severe and, as such, there are differences that make it impossible to directly compare test results. In particular, the ignition source and its heat output prescribed in the Canadian test method are different than in the NFPA 286 test method.

In this evaluation, tests are conducted in conformance with the CAN/ULC- 9705 test method to determine the potential effect of a MD spray polyurethane foam protected using an intumescent coating on the fire growth and fire characteristics. The criterion used in these full-room tests is the ‘time-to-flashover.’ Flashover is the near-simultaneous ignition of most of the directly exposed combustible material in an enclosed area. The time-to-flashover indicates the time at which fire will spread to other objects in the room remote from the ignition source. In standard room tests such as CAN/ULC-9705, the time at which flashover occurs is determined by the earliest time at which two of the following criteria occur:

  1. Heat release rate including burner ≥ 1 MW.
  2. Incident heat flux at the floor ≥ 20 kW/m2.
  3. Flames through doorway.
  4. Crumpled paper on floor ignites.
  5. Average temperature at ceiling in the room exceeds 600ºC.

In addition, similar testing must be undertaken for benchmarking of the NBC-specified acceptable solutions or the acceptable solutions specified by the provincial and territorial regulators. Based on the provincial and territorial consultation, the proponent in consultation with the CCMC evaluation officer determined the tests and criteria to be met for the decision making by the local AHJs across Canada.

Provincial and Territorial consultation  

B1 Background

The consultation of the provinces and territories was conducted from October 2015 to January 2016. Discussions were done on the SPUF applications for single-family house basements and attached garages.

Other applications within Part 9, Buildings could be permitted and other Code provisions may apply (i.e., fire-resistance rating of assembly).

Tables B1, B2 and B3 show compiled responses for benchmark thermal barrier protection based on: (i) the Code minimum (whether it reflects current practice or not); (ii) the current practice and continued performance based on current practice; or (iii) a combination of both.

B2 Proponent Decision Making – Rationalizing Benchmarks

Based on this survey, the proponent has sought to demonstrate equal or better performance of one or more of the jurisdictions by qualifying to the different benchmark levels.

IFTI has sought to qualify their DC 315 product to a benchmark that would capture as many jurisdictions’ benchmark performances as possible. The benchmark acceptable solution is 12.7-mm (1/2 in.) gypsum wallboard, which covers all jurisdictions except for: (i) New Brunswick (NB), which requires a higher level of performance for foam plastic; and (ii) Alberta (AB), for attached garage applications whereby they specify explicit Code requirements for a 12.7-mm (1/2 in.) gypsum board as an interior finish, beyond the thermal barrier performance requirement.

Table 6. B1. Thermal Barrier Protection of Basement SPUF Applications
Province or TerritoryTable footnote (1) Thermal Barrier Benchmark for Basements Intumescent Coating to Cover/Protect SPUF Cavity Insulation Only Intumescent Coating to Cover/Protect SPUF Cavity Insulation and Stud Framing
Nunavut (NU), British Columbia (BC), Nova Scotia (NS), Northwest Territories (NWT), Manitoba (MB), Alberta (AB) Fibreboard – 11.1 mm (7/16 in.) NU, BC, NWT, MB, AB NS
Yukon Territory (YT), Saskatchewan (SK) Ontario(ON) Drywall – 12.7 mm (1/2 in.) ON YT, SKTable footnote (2)
Québec (QC) Drywall – 9.5 mm (3/8 in.) QC -
New Brunswick (NB) Drywall – 15.9 mm (5/8 in.) or 15 min/S101 thermal barrier NB -
Table 7. B2. Thermal Barrier Protection of Attached Garage SPUF Applications
Province or TerritoryTable footnote (1) Thermal Barrier Benchmark for Attached Garages Intumescent Coating to Cover/Protect SPUF Cavity Insulation Only Intumescent Coating to Cover/Protect SPUF Cavity Insulation and Studs and Ceiling Joists
NU, BC, NS, NWT, MB Fibreboard – 11.1 mm (7/16 in.) NU, BC, NWT, MB NS
YT, SK, ON Drywall – 12.7 mm (1/2 in.) ON YT, SKTable footnote (2)
QC Drywall – 9.5 mm (3/8 in.) QC -
NB Drywall – 15.8 mm (5/8 in.) or 15 min/S101 thermal barrier NB -
AB Interior finish mandated – 12.7 mm (1/2 in.) gypsum or 15 min/S101 - Interior finish over studs, joists, trusses, etc
Table 8. B3. Protection of Insulation from Mechanical Damage (When Protection Required)
Province or TerritoryTable footnote (1) Mechanical Damage Protection for Insulation – Benchmark Attached Garages Basement Areas
AB, YT, NU, BC, MB, ON Any Code-specified panel – gypsum board, plywood/OSB, hardboard, particleboard YT, NU, BC, MB, ON AB, YT, NU, BC, MB, ON
YT, SK, AB Drywall – 12.7 mm (1/2 in.) AB, SK SK
NWT, QC Drywall – 9.5 mm (3/8 in.) NWT, QC NWT, QC
NB Code-specified panels NB NB
Alternative solution for part 9 and part 3: summary table    
Table 9. C1. Summary Table of DC 315 Performance versus Part 9 and Part 3 Acceptable Solutions
NBC Part 9
NBC-Specified Thermal Barrier Test Method Result Time to Flashover (minutes:seconds)
Acceptable Solutions Alternative Solution
Interior finishes in Subsections 9.29.4 to 9.29.9 ISO/CAN/ULC9705 Full-scale room test

1:00-3:00

(N.B. CCMC-specified 10 minute minimum to be met)

20 mil DC 315 w/3 mil primer

11:00 minutesTable of footnote (1)

Common Practice (As-Built Environment)

24 mil DC 315 w/3 mil primer

20:00 minutesTable of footnote (2)

12.7-mm regular gypsumTable of footnote (3) ISO/CAN/ULC9705 Full-scale room test 20:00
NBC Part 3
Acceptable Solutions Sentence 3.1.5.15.(2) Alternative Solution
Clause 3.1.5.15.(2)(a)Table of footnote (1) ISO/CAN/ULC9705 Full-scale room test 20:00

24 mil DC315 w/3 mil primer

20:00 minutesTable of footnote (3)

Clause 3.1.5.15.(2)(e)Table of footnote (4) 14:10

Administrative information

Disclaimer

This evaluation is issued by the Canadian Construction Materials Centre (CCMC), a part of the Construction Research Centre at the National Research Council of Canada (NRC). The evaluation must be read in the context of the entire CCMC Registry of Product Assessments and the legislated applicable building code in effect.

The CCMC was established in 1988 on behalf of the applicable regulator (i.e., the provinces and territories) to ensure—through assessment—conformity of alternative and acceptable solutions to regional building codes as determined by the local authority having jurisdiction (AHJ) as part of the issuance of a building permit.

It is the responsibility of the local AHJs, design professionals, and specifiers to confirm that the evaluation is current and has not been withdrawn or superseded by a later issue. Please refer to the website or contact:

Canadian Construction Materials Centre
Construction Research Centre
National Research Council of Canada
1200 Montreal Road
Ottawa, Ontario, K1A 0R6
Telephone: 613-993-6189
Fax: 613-952-0268

The NRC has evaluated the material, product, system or service described herein only for those characteristics stated herein. The information and opinions in this evaluation are directed to those who have the appropriate degree of experience to use and apply its contents (i.e., AHJs, design professionals and specifiers). This evaluation is only valid when the product is installed in strict compliance with the stated conditions and limitations of evaluation and the applicable local building code. In circumstances where no applicable local building permit is issued and that no confirmation of compliance ‘for use in the intended field application’ is undertaken, this evaluation is null and void in all respects. This evaluation is provided without representation, warranty, or guarantee of any kind, expressed, or implied, and the NRC provides no endorsement for any evaluated material, product, system or service described herein. The NRC accepts no responsibility whatsoever arising in any way from any and all use and reliance on the information contained in this evaluation with respect to its compliance to the referenced code(s) and standard(s). The NRC is not undertaking to render professional or other services on behalf of any person or entity nor to perform any duty owed by any person or entity to another person or entity.

Language

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In the case of any discrepancy between the English and French version of this document, the English version shall prevail.

Copyright

© His Majesty the King in Right of Canada, as represented by the National Research Council of Canada, 2022

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the CCMC.

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