[CCMC 14240-R] CCMC Canadian code compliance evaluation
From: National Research Council Canada
Gaco, a division of Firestone Building Products Company, LLC
200 4th Avenue South Suite 100
|Product name:||GacoOnePass Low GWP|
|Code compliance:||NBC 2015, NBC 2020|
In most jurisdictions this document is sufficient evidence for approval by Canadian authorities.Learn more about CCMC recognition Look for the trusted CCMC mark on products to verify compliance.
Code compliance opinion
It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as thermal insulation in accordance with the conditions and limitations stated in this evaluation, complies with the following codes:
National Building Code of Canada 2015
|ID||Code provision||Solution type|
|05-09-01-01-00-0-00||184.108.40.206. Compliance with Applicable Standards||Alternative|
|09-25-02-02-01-h-00||220.127.116.11.(1)(h) Insulation Materials||Alternative|
|09-25-02-05-00-0-00||18.104.22.168. Installation of Spray-Applied Polyurethane||Alternative|
National Building Code of Canada 2020
|ID||Code provision||Solution type|
|22.214.171.124.||126.96.36.199. Compliance with Applicable Standards||Alternative|
|188.8.131.52.||184.108.40.206. Installation of Spray-Applied Polyurethane||Alternative|
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 nameGacoOnePass Low GWP
GacoOnePass Low GWP is a spray-applied, rigid polyurethane foam of medium density that has a closed-cell structure. The foaming system consists of two components that must be labelled with “CCMC 14240-R” and the following information:
- Isocyanate (Component A): Gaco ISO Component A - Can; and
- Resin (Component B): GacoOnePass Low GWP
The two components are mixed on site by Certified installers with fixed-ratio positive displacement equipment. The colour of the installed final cured product is yellow/off-white.
This product is referred to as a ‘high-lift’ spray polyurethane foam whereby a thick layer of GacoOnePass Low GWP can be applied in a single pass. The product is installed at a maximum nominal thickness of 102 mm and a minimum nominal thickness of 50 mm. This installation method differs from the method described in CAN/ULC-S705.2-05, “Standard for Thermal Insulation – Spray Applied Rigid Polyurethane Foam, Medium Density – Application,” which specifies a 50-mm maximum nominal thickness for spray foam installed in a single pass.
The final cured product has a density of 36.2 kg/m3 and is available in the following colour:
- Light green
At 50-mm thick, the design long-term thermal resistance (LTTR) value is 1.92 (m2·K)/W. See physical properties of the product for estimated LTTR values at higher thicknesses.
The product is available in winter grade and regular grade formulations.
This is a site-manufactured product; it is finished on site following the spray-application of raw materials produced at the manufacturing plant(s) below. See Installation of spray-applied polyurethane insulation for more information on the requirements for installation.
This evaluation is valid only for products produced at the following plant:
|Product name||Manufacturing plant|
|Waukesha, WI, US|
|GacoOnePass Low GWP||Product 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.
- This is a site-manufactured product whereby the Installation of spray-applied polyurethane insulation must be performed following a Site quality assurance program (SQAP) by Certified installers trained by the evaluation holder (or their representative) and licensed by the Designated SQAP provider.
- The cured polyurethane foam must have a minimum nominal thickness of 50 mm and a maximum nominal thickness of 102 mm. Any product sprayed to a thickness greater than 117 mm (maximum nominal thickness plus a field safety margin of 13 mm) must be removed from the substrate immediately after application and the substrates sprayed again. Footnote (1)
- The application of the foam in multiple passes is beyond the scope of this evaluation.
- The polyurethane foam can be applied on the substrates listed under Adhérence au support. Substrates must be clean, dry, and free of grease, frost, dust, rust and other contaminants that may affect the adhesion performance of the foam to the substrate.
- Below-grade (exterior side of foundation wall) and attic applications are beyond the scope of this evaluation.
- As required in Article 220.127.116.11., Installation of Thermal Insulation, of Division B of the NBC 2015, the insulation shall have a reasonably uniform insulation value over the entire face of the insulated area.
- The assessment of the fire hazard-peak temperature reached during foam application is only valid for the tested substrates under Exigences de température des matériaux en lien avec la réaction exothermique and for foam applied in a single pass with a maximum nominal thickness of 102 mm.
- The peak temperatures of the thick single pass may affect the performance and durability of materials and equipment in contact with the foam (such as ducts, pipes and electrical wires). The performance of such components is beyond the scope of this evaluation. The measured maximum temperature of the foam while curing is specified under Exigences de température des matériaux en lien avec la réaction exothermique for designers, builders, authorities having jurisdiction (AHJ), and other users to verify the potential fire hazard on utility services installed in the wall prior the foam installation. To lower the risk of damage—especially when installing materials that may melt (i.e. polyethylene vapour/air barrier)—it is important to consider the timeframe in which the foam will reach ambient temperature. Additional details are provided in Table 7.
- The interior side of the polyurethane foam insulation must be covered with an approved thermal barrier as per:
- Article 18.104.22.168., Protection of Foamed Plastics, of Division B of the NBC 2015;
- Article 22.214.171.124., Foamed Plastic Insulation, of Division B of the NBC 2015; or
- Article 126.96.36.199., Protection of Foamed Plastics, of Division B of the NBC 2015.
- When applicable, the exterior surface of an exterior wall containing this insulation shall be designed in accordance with Section 9.10, Fire Protection, of Division B of the NBC 2015, or Section 3.2, Building Fire Safety, of Division B of the NBC 2015. The product shall not be used in exposed interior or exterior locations.
- The insulation must be kept away at least 75 mm (or as required by building regulations and safety codes) from heat-emitting devices (such as recessed lighting fixtures and chimneys). The insulation shall not be used inside electrical outlets or junction boxes.
- For applications, where there may be occupants in the building, the qualified installer must ensure that the spraying area is isolated and negatively pressurized by using an exfiltration rate of 0.3 air changes per hour for at least 25 hours. An independent toxicologist assessment determined that this ventilation rate must also be in effect before occupancy is permitted in the newly insulated suite. Additional details are provided in Note 3 of Table 2
- When the product is installed in an exterior insulation sheathing-type application, the low air and water vapour-permeance value of the product requires that the wall assembly conform to Table 188.8.131.52., Ratio of Outboard to Inboard Thermal Resistance, of Division B of the NBC 2015.
- The product must not be installed after the expiry date printed on the label of each container. The product has a shelf life of five (5) months from the date of manufacture.
- The substrate temperatures are −7°C to 24°C for the winter grade formulation and 10°C to 49°C for the regular grade formulation. The appropriate formulation shall be chosen for the specific temperature conditions of application in consultation with GACO, a division of Firestone Building Products Company.
- The installation of the product must:
- conform to the general requirements of CAN/ULC-S705.2-05,
- comply with the manufacturer’s specific installation instructions for their proprietary high-lift product
- meet all conditions and limitations in this evaluation.
- The continuous in-service temperature of the insulation must not exceed the range of −60°C to 80°C.
- The building envelope in which this product is installed must conform to the requirements of Division B of the NBC 2015 for vapour barrier, air barrier and dampproofing (interior below-grade walls).
- The product must be protected from ultraviolet radiation within 90 days of installation.
- The components, Gaco ISO Component A - Can isocyanate and GacoOnePass Low GWP resin, must have their respective containers (i.e., drums) identified by the phrase “CCMC 14240-R.”
This evaluation is based on demonstrated conformance with the following criteria:
|Criteria number||Criteria name|
|CCMC-TG-072119.06-15||CCMC Technical Guide for Spray-Applied Rigid Polyurethane Foam Insulation – Single Pass Medium Density|
|CCMC-TG-072119.06-20||CCMC Technical Guide for Spray-Applied Rigid Polyurethane Foam Insulation – Single Pass Medium Density|
The evaluation holder has submitted technical documentation for CCMC’s evaluation. Testing was conducted at laboratories recognized by CCMC. The corresponding technical evidence for this product is summarized below.
The following were the key performance requirements of the evaluation:
|Material qualification||Foam basic properties per CAN/ULC-S705.1 requirements except for the sample preparation. Samples were sprayed at the maximum nominal thickness of 127 mm using a single pass instead of two passes of 30-mm each nominal thickness as specified in CAN/ULC-S705.1. Foam application of regular formulation at 23°C was used for testing as required in CAN/ULC-S705.1.
Key physical properties in high- and low-temperature applications.
|Adhesion performance||Foam adhesion strength to different substrates (the manufacturer-selected substrates are presented in Adhérence au support). Foam application of regular formulation at high surface temperature was considered a worst-case scenario.|
|Foam uniformity||Foam cells uniformity when sprayed in different wall cavity dimensions. Foam application of regular formulation at high surface temperature and at maximum nominal thickness was considered a worst-case scenario.|
|Material temperature requirements due to exothermic reaction||Maximum temperature achieved in the foam due to exothermic reaction (high internal temperature generated while curing). Foam application of summer grade formulation at highest surface temperature was considered a worst-case scenario by the manufacturer.|
Physical properties from ambient temperature application
The basic properties of the product’s regular formulation, when sprayed over polyethylene board having a surface temperature of 23°C, are presented below. Test specimens used were extracted from the central area of foam samples sprayed at a nominal 102-mm thickness.
|Air permeance for a 25-mm-thick specimen||L/(s∙m2)||≤ 0.020||0.0021|
|Apparent core density||kg/m3||≥ 28.0||36.2|
|Compressive strength||kPa||≥ 170||209|
|Dimensional stability, without substrate volume change at||−20°C||
|70°C, 97 ± 3% RH||+14||7.4|
|Surface burning characteristics for a 100- mm-thick specimen||Flame-spread ratingTable footnote (1)||--||≤ 500||270|
|Open-cell content volume||%||≤ 10||4|
|Initial thermal resistance for a 50-mm-thick specimen (after 13 days at 23°C)||(m2∙K)/W||Declare||2.39|
Long-term thermal resistance (LTTR)Table footnote (2)
|Tensile strength||kPa||≥ 200||323|
|Volatile organic emissions (VOC)Table footnote (3)||hrs||≤ 30 days||25|
|Water absorption by volume||%||≤ 4.0||2.5|
|Water vapour permeance (WVP)
for a 50-mm-thick specimen
|Specimen with bottom skin intact
(top skin removed)
|Fungi resistance||--||No growth||None|
Physical properties in high-temperature application
The air permeance and water vapour permeance of the product’s regular formulation, when sprayed over polyethylene board having a surface temperature of 49°C, are presented below. Test specimens used were extracted from foam samples sprayed at a nominal 102-mm thickness.
|Air permeance for a 42.3-mm-thick specimen||L/(s∙m2)||≤ 0.020||0.0025|
|Water vapour permeance (WVP) for a 50-mm-thick specimen||specimen with bottom skin intact (top skin removed)||ng/(Pa∙s∙m2)||≤ 60||47|
Physical properties in low-temperature application
The initial and long-term thermal resistance of the product’s winter grade formulation, when sprayed over concrete tiles having a surface temperature of −10°C, are presented below. Test specimens used were extracted from foam samples sprayed at a nominal 60-mm thickness.
|Initial thermal resistance for a 50-mm-thick specimen (after 13 days at 23°C)||(m2∙K)/W||Report value||2.36|
|Long-term thermal resistance (LTTR)Table footnote (1)||125 mm||
The adhesion strength of the product’s regular formulation, when sprayed over wood, gypsum and concrete substrates having a surface temperature of 49°C, is presented in below. Foam samples were sprayed at a nominal 102-mm thickness.
|Adhesion strengthTable footnote (1)||Exterior gypsum board||
|Oriented strand board (OSB)||93.6|
The average cell size of the product’s regular formulation, when sprayed in wood frame cavities made of oriented strandboard (OSB) sheathing and 89-mm × 140-mm wood studs spaced at 600 mm on centre (o.c.), 400 mm o.c. and 300 mm o.c., are presented below. The substrate surface temperature was 49°C. Foam samples were sprayed at a nominal 102-mm thickness.
|Average cell size||Panel with two cavities of 600 mm o.c.||mm||< 0.5||PassTable footnote (1)|
|Panel with two cavities of 400 mm o.c.||mm||< 0.5||PassTable footnote (2)|
|Panel with two cavities of 300 mm o.c.||mm||< 0.5||PassTable footnote (3)|
Material temperature requirements due to exothermic reaction
The maximum temperature and amount of time required for the product’s summer grade formulation to cool down when sprayed over wood and gypsum substrate with an ambient temperature of 49°C are presented below. Spraying over concrete substrate was not part of the testing protocol since this type of substrate is a non-combustible material. Foam samples were sprayed at a nominal 102-mm thickness.
|Maximum recorded temperature at any place in the foam||OSB substrate||°C
|Temperatures in the foam vs. time||°C||Temperature vs. time must be decreasing after the peak(1)||Pass|
|Maximum recorded temperature at wood frame–foam interface||OSB substrate||°C
|Maximum recorded temperature at substrate–foam interface:||Wood material and gypsum bord||OSB substrate||°C
|Gypsum substrate||< 170||92.2|
|Melting materials||°C||Foam temperature must be less than melting temperature of the materialTable footnote (2)||n/a|
|Non-combustible materials||--||Not required||n/a|
|Timeframe for the foam temperature to cool down to 51°C||OSB substrate||hr:min||Report value||10:10Table footnote (3)|
Site quality assurance program (SQAP)
Installation of spray-applied polyurethane insulation
In addition to the material qualification to CAN/ULC-S705.1 above, light density spray-applied polyurethane foams must be installed in accordance with CAN/ULC-S705.2 under a Site Quality Assurance Program (SQAP). This evaluation holder has engaged the Designated SQAP provider below to operate it's SQAP program for the installation of this product by Certified installers, and to provide Third-party site auditing, as required. As with any evaluation, the evaluation holder is responsible for the quality of the finished product (installed foam), and therefore is required to ensure resolution of non-conforming installations.
The installation procedure must follow the manufacturer’s instruction manual. A copy of the manual must be available at the job site at all times during the installation for review by the building official.
The evaluation holder requires that only specific, certified installers be authorized to install its proprietary spray-polyurethane insulation in buildings. All installers must be certified for the installation of this product by the Designated SQAP provider, having a valid photo-identification license at the time of installation, and be able to present the license on request.
Third-party site auditing
As part of its SQAP, the evaluation holder also stipulates that periodic site-audit inspections be conducted by the Designated SQAP provider. Upon completion of the site audit, the designated SQAP provider will report the product’s conformity results and any corrective action required, if necessary, to the evaluation holder. Building officials can contact the SQAP provider to request a site-audits at a specific building site.
Designated SQAP provider
The following organization has been designated by the evaluation holder as their SQAP provider, and is recognized by the CCMC as an ISO/IEC 17024 accredited personnel certification body, and ISO/IEC 17020 accredited inspection body.
Urethane Foam Consultants (UFC)
160 Main St. S, Suite 547
Brampton, ON L6W 4C1
Use of Canadian Construction Materials Centre (CCMC) assessments
This assessment must be read in the context of the entire CCMC Registry of Product Assessments, any applicable building code or by-law requirements, and/or any other regulatory requirements (for example, the Canada Consumer Product Safety Act, the Canadian Environmental Protection Act, etc.).
It is the responsibility of the user to confirm that the assessment they are using is current and has not been withdrawn or superseded by a later version on the CCMC Registry of Product Assessments.
The National Research Council of Canada (NRC) has evaluated only the characteristics of the specific product described 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 (such as authorities having jurisdiction, design professionals and specifiers). This evaluation is valid when the product is used as part of permitted construction, respecting all conditions and limitations stated in the evaluation, and in accordance with applicable building codes and by-laws.
This evaluation is provided without representation, warranty or guarantee of any kind, expressed or implied, and the NRC provides no endorsement for any evaluated product. The NRC accepts no responsibility whatsoever arising in any way from any and all use of or reliance on the information contained herein or the use of any evaluated product. 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.
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© His Majesty the King in Right of Canada, as represented by the National Research Council of Canada, 2023
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