IFTI DC315™ vs. No-Burn® Plus ThB vs. Flame Control® 60-60A: 2026 Canadian CAN/ULC-S124 Thermal Barrier Coating Comparison

IFTI DC315™ vs. No-Burn® Plus ThB vs. Flame Control® 60-60A: 2026 Ontario Overview & Code Essentials

When an Ontario municipal building inspector, fire marshal, or commercial architect specifies an intumescent fire-protective coating over exposed spray polyurethane foam instead of 1/2" gypsum drywall, one question immediately comes up on the jobsite: What is the difference between IFTI DC315™, No-Burn® Plus ThB, and Flame Control® No. 60-60A under Canadian building codes? In the United States (under the International Building Code), several coatings are marketed as "ignition barriers" for restricted attics and crawl spaces—but in Ontario and across Canada, the Ontario Building Code (OBC 3.1.4.2 and 9.10.17.10) and the National Building Code of Canada (NBC) enforce strict CAN/ULC-S124 thermal barrier and CCMC (Canadian Construction Materials Centre) brand-specific foam assembly test listings. Selecting a coating that has not been fire-tested over your exact brand of spray foam will trigger an immediate municipal inspection hold. Our certified DC315 thermal barrier application team ensures 100% first-visit inspector sign-off.

At Sprayfoam Solutions Toronto Inc. ((647) 333-3626), we operate as Ontario’s Single-Source Certified Spray Foam & Fire Coating Contractor with Caliber Certified (CAN/ULC-S705.2 Licensed) Installers and commercial 3,000+ PSI airless fire-coating rigs. Whether you need a Turnkey 2 lb Closed-Cell SPF + 18-Mil DC315 Package for a 40,000 sq ft warehouse or a fast 48-hour thermal barrier coat over existing foam, you can compare all three coatings below and check your exact installed price in 60 seconds at spfsolutions.ca/price-chat (with an instant $250 Estimate Credit).

2026 Canadian Thermal Barrier Coating Comparison Table: IFTI DC315 vs. No-Burn Plus ThB vs. Flame Control 60-60A

Before a Canadian municipal building official accepts a liquid-applied thermal barrier over CAN/ULC-S705.1 closed-cell or open-cell spray polyurethane foam, the contractor must prove that the specific coating + specific spray foam chemical brand passed either CAN/ULC-S124 or full-scale NFPA 286 / UL 1715 room-corner fire testing at the exact Wet Film Thickness (WFT) and Dry Film Thickness (DFT) applied on site. Here is the side-by-side 2026 Canadian technical and pricing comparison:

Why CCMC #14036-R (IFTI DC315™) Is the #1 Accepted Spec by Ontario Building Officials

In Ontario, municipal building inspectors in Toronto, Mississauga, Brampton, Vaughan, Markham, Hamilton, and Ottawa rely directly on the Canadian Construction Materials Centre (CCMC) Registry at NRC Canada to verify code compliance under Ontario Building Code Division B. IFTI DC315™ holds CCMC Evaluation Report #14036-R and ULC Certification (CAN/ULC-S124 and CAN/ULC-S102), backed by over 120 full-scale NFPA 286 fire tests across virtually every CCMC-approved Canadian 2 lb closed-cell spray foam—including BASF Walltite® Eco v.3, Huntsman Building Solutions (Icynene/Demilec), Johns Manville & other approved CCMC spray foam chemicals — Low-VOC HFO Blown.

By contrast, No-Burn® Plus ThB and Flame Control® No. 60-60A are primarily evaluated under US ICC-ES (ESR-1668 / ER-305) and specific NFPA 286 assemblies. While we are fully equipped to install International Fireproof Technology Inc. (IFTI) DC315™, No-Burn® Plus ThB, Flame Control® No. 60-60A & other approved CAN/ULC-S124 / CCMC intumescent thermal barrier coatings whenever an architect or engineer specifies them, 95%+ of Ontario building officials immediately sign off on IFTI DC315 (CCMC #14036-R) without requiring an expensive P.Eng. Alternative Solution letter.

Why Single-Source Turnkey 2 lb Closed-Cell SPF + 18-Mil DC315 Saves 20%–30% vs. Hiring Two Contractors

If you are insulating a commercial warehouse, metal building, underground parkade soffit, shipping container, or mechanical room, hiring one contractor to spray the foam and a separate painting contractor to apply the thermal barrier creates an immediate compliance trap: under CCMC #14036-R, the thermal barrier applicator cannot legally certify the fire assembly unless they know the exact spray foam brand, resin lot number, and surface profile installed underneath.

When you book our Turnkey 2 lb Closed-Cell SPF + 18-Mil DC315 Package (also detailed in our 2026 DC315 Fire Coating Cost Guide), Sprayfoam Solutions Toronto Inc. handles both passes under a single mobilization: our Caliber Certified (CAN/ULC-S705.2 Licensed) Installers spray smooth, knit-line-controlled 2 lb closed-cell foam on Day 1, and our 3,000+ PSI airless crew applies 18 mils WFT / 12 mils DFT of DC315 once the foam cools—saving you duplicate scissor-lift rentals, duplicate masking labour, and eliminating finger-pointing at inspection time.

Foam-Brand Compatibility & Required Film Thickness (WFT vs. DFT Math in Ontario)

Because intumescent thermal barrier coatings contain 64% to 67% volume solids, water evaporates as the coating cures. An Ontario building inspector using a magnetic or ultrasonic Elcometer 456 Dry Film Thickness (DFT) gauge will verify that the cured dry film meets the exact CCMC / NFPA 286 test report for the underlying spray foam brand:

6 Critical Application & Inspection Rules for CAN/ULC-S124 Thermal Barriers Over Spray Foam

Whether you are clearing a residential OBC 9.10.17.10 inspection order in a basement mechanical room or coating 30,000 sq ft of overhead warehouse decking under OBC 3.1.4.2, our certified fire-coating division enforces six strict field protocols:

• 1. Never Confuse Hardware-Store "Fire Retardant Paint" With a CAN/ULC-S124 Thermal Barrier: Standard retail fire-retardant paints only reduce surface flame spread (CAN/ULC-S102) on wood or drywall—they do not stop heat transfer into polyurethane foam and will fail an Ontario building inspection 100% of the time. Exposed spray foam requires a certified 15-minute thermal barrier (CAN/ULC-S124 / NFPA 286) like IFTI DC315 (CCMC #14036-R).
• 2. Mandatory 3,000+ PSI Airless Spray Application (Why DIY Brush/Roller Jobs Fail DFT Audits): Trying to roll or brush intumescent coating onto wavy spray foam leaves thin peaks (4–6 mils DFT) that fail inspector pin-gauge tests and heavy valleys that mud-crack. Our crew uses high-output 3,000–3,300 PSI commercial airless piston pumps (filter-free with .019" to .023" reversible tips) to atomize a uniform 18-mil wet film in one cross-hatched pass.
• 3. Substrate Temperature (≥10°C / 50°F), Relative Humidity (<65% RH) & Foam Cool-Down Window: Water-based intumescent coatings like DC315 and No-Burn Plus ThB must never be sprayed onto freshly hot polyurethane foam or freezing substrates. We allow fresh 2 lb closed-cell foam to cool and stabilize, verify substrate temperature is at least 10°C (50°F) and 3°C above the dew point, and run high-CFM dehumidifiers/air movers so the coating cures into a tough coalesced film.
• 4. Wet Film Comb Checks During Spraying + Calibrated Elcometer DFT Verification After Cure: Our sprayer checks every 250 sq ft grid with a stainless-steel Wet Film Thickness (WFT) notch gauge during application (≥18 mils WFT) and logs cured Dry Film Thickness (≥12 mils DFT) readings using a calibrated digital gauge.
• 5. No Primer Required Over Clean, Freshly Cured 2 lb Closed-Cell Spray Foam: When applied over clean, dry, unoxidized CAN/ULC-S705.1 2 lb closed-cell foam, IFTI DC315 bonds directly without a separate primer. If existing spray foam has been left exposed to UV light for months and developed chalky yellow oxidation, we power-brush and clean the degraded skin first so the thermal barrier adheres permanently.
• 6. Complete 5-Part Municipal Inspector Sign-Off Binder Left on Site: Every project includes our turnkey compliance package: (1) CCMC #14036-R Evaluation Report, (2) CAN/ULC-S124 & NFPA 286 Test Certificates matched to your foam brand, (3) Pail Batch & Lot Number Log, (4) Signed WFT/DFT Thickness Map, and (5) Official Warning Label Placards mounted in the sprayed zone.

18-Mil CAN/ULC-S124 Intumescent Coating vs. 1/2" Gypsum Drywall Over Spray Foam

In corrugated metal buildings, shipping containers, mechanical rooms, rim-joist bays, and vaulted ceilings, hanging 1/2" drywall requires expensive steel hat-channel strapping and adds heavy dead load. Compare sprayed CAN/ULC-S124 thermal barrier coatings against drywall:

Our 4-Step Certified CAN/ULC-S124 Thermal Barrier Application Process ($0 GTA Travel Fee)

From urgent residential inspection rescues in Toronto, Scarborough, and Mississauga to large-scale commercial ceiling and wall packages in Brampton, Vaughan, Markham, Oakville, and Hamilton (explore our full Fire Coating Chemical & System Guide and Ceiling Spray Foam Cost Guide), here is how our crew executes your project:

TURNKEY FIRE COATING EXECUTION

How We Apply & Certify 18-Mil DC315 Over Spray Foam

1

Foam Audit & Code Match

Step 1 • Verification

We identify your underlying spray foam brand (or spray fresh 2 lb closed-cell foam) and match it to the exact CCMC #14036-R / CAN/ULC-S124 test report.

2

Poly Masking & Dehumidification

Step 2 • Site Protection

Our team masks all windows, conduits, HVAC equipment, and floors, verifies ≥10°C substrate temperature, and sets up airflow for rapid water-based curing.

3

3,000 PSI Airless Application

Step 3 • 18-Mil WFT Spray

We apply IFTI DC315 (or specified CAN/ULC-S124 coating) at 18 mils WFT in a cross-hatched pass, checking wet film depth every 250 sq ft with a notch comb.

4

DFT Pin-Test & Sign-Off Binder

Step 4 • Inspector Handover

Once cured to 12 mils DFT, we log calibrated thickness readings, post thermal-barrier placards, and issue your stamped municipal inspector sign-off binder.