Commercial Cementitious Fireproofing Patching, Tenant Fit-Out Respray & Occupancy Inspection Rescue in Toronto & GTA (2026)
Commercial Cementitious Fireproofing Patching, Tenant Fit-Out Respray & Occupancy Inspection Rescue in Toronto & GTA (2026): 2026 Ontario Overview & Code Essentials
During virtually every commercial tenant improvement, office core retrofit, hospital renovation, underground parkade upgrade, or retail plaza build-out in Toronto, Mississauga, Brampton, Vaughan, Markham, and Hamilton, mechanical and electrical sub-trades scrape away existing Spray-Applied Fire-Resistive Material (SFRM) to weld new pipe hangers, run HVAC ductwork, anchor conduit, or cut core holes through structural decks. Days before the scheduled opening, the municipal building inspector or third-party engineering consultant walks the ceiling plenum, spots bare steel on wide-flange beams, open-web joists, or fluted metal decks, and issues an immediate Occupancy Hold under 2026 Ontario Building Code Division B Part 3 and CAN/ULC-S101.
At Sprayfoam Solutions Toronto Inc., our commercial fireproofing division specializes in fast-track cementitious fireproofing patching and structural resprays alongside our Single-Source Turnkey 2 lb Closed-Cell SPF + 18-Mil DC315 Package. Because we operate both commercial Monokote® / Cafco® SFRM mixer-pumps and Caliber Certified (CAN/ULC-S705.2 Licensed) spray foam & DC315 fire coating rigs, general contractors and property managers never get caught in cross-trade finger-pointing where structural steel fireproofing meets exterior wall or roof-deck spray foam insulation. Get a $250 Credit on Your Estimate — Check Your Price in 60 Seconds (/price-chat) • No Site Visit Required, or send your deficiency report to our General Contractor & B2B Estimating Desk.
Compare our 3 commercial SFRM repair, tenant fit-out respray, and hybrid SFRM + Spray Foam tiers across Ontario before checking your exact estimate in 60 seconds:
- 15 lb Standard (Monokote MK-6 / Cafco 300) Hand-Trowel & Hopper Patching
- Restores 1-Hr to 2-Hr ULC Steel & Deck Ratings
- Signed CAN/ULC-S101 Compliance Letter
- Includes $250 Credit
- 15 lb Standard SFRM or 22 lb Medium-Density Portland Cement (Monokote Z-106 / Cafco 400)
- Full Poly Containment, Bonding Adhesive & ASTM E605/E736 QA Log
- CAN/ULC-S101 SFRM on Primary Steel Columns/Beams + 2 lb Closed-Cell SPF & 18-Mil DC315 on Envelope Walls/Soffits
- Single-Source Division 07 Sub-Trade
2026 Commercial Cementitious Fireproofing (SFRM) Patching & Mechanical Cut Re-Spray Cost Per Sq Ft in Ontario
In 2026, commercial cementitious fireproofing patching and respray pricing in Toronto and the GTA ranges from $3.25 to $7.50 per square foot depending on product density (15 lb/ft³ gypsum-based vs. 22 lb/ft³ or 40 lb/ft³ Portland-cement-based), required CAN/ULC-S101 fire-resistance rating (45-Min, 1-Hr, 2-Hr, or 3-Hr), and containment complexity around live ceiling mechanicals:
| Commercial SFRM Patching / Hybrid Scope | Approved Fireproofing & Envelope Spec | 2026 Installed Rate (/sq ft) | Typical GTA Project Total | Ontario Building Code & ULC Status |
|---|---|---|---|---|
Small Mechanical / Hanger Cut Patching(10–50 Localized Steel & Deck Spots) | Monokote® MK-6 HY / Cafco® 300 ( 15 lb Standard SFRM) + Bonding Agent | $4.95 – $7.50 / sq ft | $2,850 – $6,500(Fast-Track Rescue) | Clears Municipal Occupancy Deficiency( CAN/ULC-S101) |
Tenant Improvement Ceiling Deck Respray(Scraped Fluted Deck & Open-Web Joists) | 1-Hr to 2-Hr ULC Design ( 0.5" – 1.25" Thickness • 15 lb SFRM) | $3.25 – $5.25 / sq ft | $8,500 – $34,000(2,500–7,500 sq ft) | Restores Part 3 Floor/Roof Assembly Rating |
Medium-Density Parkade & Loading Dock Repair(Abrasion & Moisture Resistant) | Monokote® Z-106 / Cafco® 400 ( 22 lb Portland Cement SFRM) | $4.25 – $6.75 / sq ft | $12,750 – $54,000(3,000–9,000 sq ft) | High-Bond ( >430 psf ASTM E736) High-Humidity Spec |
High-Density Industrial / Mechanical Room(40 lb Hard-Coat Impact Zone) | Monokote® Z-146 / Isolatek® High-Density ( 40 lb/ft³ SFRM) | $6.50 – $11.50 / sq ft | $16,250 – $69,000(2,500–6,000 sq ft) | Extreme Mechanical Impact & Washdown Resistance |
Hybrid SFRM Steel + 2 lb SPF & 18-Mil DC315(Perimeter Spandrel & Soffit Transition) | SFRM on Steel + 2.0" – 3.5" 2 lb SPF & 18-Mil DC315 on Envelope | $4.50 – $7.50 / sq ft | $22,500 – $95,000+(5,000–15,000 sq ft) | Zero Delamination at Fireproofing-to-Foam Tie-Ins |
Why Electricians, Plumbers & HVAC Retrofits Trigger Fire Marshal & Building Inspector Holds
In multi-storey commercial offices, retail shopping malls, condominium podiums, and industrial plants, the floor-ceiling assembly and primary structural steel frame carry a mandatory 1-hour, 1.5-hour, or 2-hour fire-resistance rating under 2026 Ontario Building Code Division B Section 3.2.2. Whenever a tenant demolishes an old ceiling or installs new rooftop HVAC curbs, sprinkler mains, or structural steel reinforcement beams, any gap in the cementitious fireproofing larger than a coin exposes the steel flange to rapid thermal buckling (>538°C / 1,000°F) during a fire. Municipal inspectors will not sign off on partial or uncertified hand-plastering; repairs must use matching ULC-listed materials (GCP Monokote® MK-6 / Z-106, Isolatek® Cafco® 300 / 400 & other ULC-listed structural fireproofing systems) installed to exact ULC Design Number thicknesses (F900, D900, Z600, or O900 series).
![5" (R31) of 2lb closed-cell spray foam on flat ceiling joists and 3.5" (R22) on exterior wall studs in Etobicoke, Toronto (The Kingsway) [JOB-2023-07-22-01]](/images/jobs/closed-cell-spray-foam/closed-cell-spray-foam-toronto-job-2023-07-22-01-59.webp)
Compatibility & Sequencing Rules When Transitioning Between Cementitious SFRM and 2 lb Closed-Cell Spray Foam
One of the most frequent—and costly—construction failures on commercial warehouse, underground parkade soffit, and retail tenant fit-out projects happens where structural steel fireproofing (CAN/ULC-S101) meets building envelope spray foam insulation (CAN/ULC-S705.1). When two separate contractors work in isolation, they routinely violate three critical chemical and physical laws:
- 1. NEVER Spray Cementitious SFRM Directly Over Bare Polyurethane Foam Without an Approved Mechanical Lath Listing: Standard
15 lbgypsum SFRM (Monokote MK-6orCafco 300) relies on rigid substrate bond (ASTM E736) to steel or concrete. Spraying wet, heavy cementitious slurry directly onto smooth closed-cell polyurethane foam without galvanized metal lath or a specifically tested ULC assembly causes the heavy plaster to delaminate and fall under its own weight. - 2. NEVER Spray Expanding 2 lb Polyurethane Foam Over Friable 15 lb Cementitious SFRM: If an insulation crew sprays CAN/ULC-S705.1 closed-cell foam over dusty, low-density
15 lb/ft³cementitious fireproofing at a perimeter spandrel beam or column-to-wall junction, the exothermic expansion (30x volume) and cohesive shrinkage of the curing foam will rip the soft SFRM right off the steel beam—destroying both the fire rating and the air barrier. - 3. The Correct Single-Source Engineering Sequence (
Steel First, Or Masked Transition + 18-Mil DC315): Because Sprayfoam Solutions Toronto Inc. installs both systems, we properly sequence the junction: primary structural steel columns and beams receive their full CAN/ULC-S101 SFRM (or thin-film intumescent fire coating) directly onto primed/clean steel first, while adjacent exterior wall panels, roof flutes, or concrete soffits receive 2 lb closed-cell spray foam (BASF Walltite® Eco v.3, Huntsman Building Solutions (Icynene/Demilec), Johns Manville & other approved CCMC spray foam chemicals — Low-VOC HFO Blown) protected by 18-mil WFT IFTI DC315® (CCMC #14036-R) thermal barrier coating.
CAN/ULC-S101, ASTM E605/E736 & OBC Part 3 Patching Specifications Explained
Whether your project architect or third-party testing agency (such as Pinchin,WSP, Englobe, or Terraprobe) specifies MasterFormat Section 07 81 00 (Applied Fireproofing) alongside Section 07 21 19 (Foamed-In-Place Masonry & Envelope Insulation), our commercial field crews adhere strictly to National Research Council Canada (NRC), ULC, and 2026 Ontario Building Code protocols:
![Caliber Certified installer in white protective coveralls spraying 3.5" (R22) of 2lb closed-cell spray foam across exterior 2x6 wood stud cavities in Scarborough, Toronto (Guildwood & Birch Cliff) [JOB-2024-07-25-01]](/images/jobs/closed-cell-spray-foam/closed-cell-spray-foam-toronto-job-2024-07-25-01-6.webp)
Concealed plenum beam, column & fluted deck repair.
Hopper-gun sprayed or hand-trowelled with bonding agent.
Clears tenant fit-out & ceiling close-in inspections.
Designed for concealed commercial office plenums, retail strip plazas, and institutional retrofits where HVAC, plumbing, and electrical trades have scraped off existing fireproofing. We clean the bare steel, apply ULC-approved bonding adhesive to the steel and surrounding SFRM edges, and restore the exact required thickness.
6 Critical On-Site Trade Rules for Cementitious Fireproofing Patching & Spray Foam Transitions
Whether clearing a pre-drywall ceiling inspection or rehabilitating a 20,000 sq ft underground parkade deck, our commercial field supervisors enforce 6 non-negotiable Division 07 rules (see also our turnkey commercial warehouse SPF + DC315 guide):
- 1. Verify Existing SFRM Chemical Base (Gypsum vs. Portland Cement) Before Patching: Patching a
22 lbPortland-cement assembly (Monokote Z-106) with soft15 lbgypsum (MK-6) in an unconditioned parkade or mechanical room violates the ULC listing and leads to rapid moisture failure. We match or upgrade the exact density class on every repair. - 2. Scrape Back Loose Edges to Sound Material & Apply ULC-Listed Bonding Adhesive: Simply spraying fresh SFRM over dusty, half-detached old fireproofing guarantees failure during the third-party
ASTM E736pull test. We scrape back all fractured edges until firmly bonded, wire-brush bare steel flanges, and roll/spray approved latex bonding agent before applying the patch. - 3. Never Bury Unprotected Spray Foam Behind Cementitious Overspray: Cementitious fireproofing is only tested to protect structural steel and concrete (
CAN/ULC-S101)—it is not a substitute for a tested CAN/ULC-S124 thermal barrier over polyurethane foam unless installed over mechanically fastened metal lath per a specific listing. For exposed spray foam transitions, we always apply 18-mil WFT IFTI DC315®. - 4. Respect Painted/Primed Steel Deck Compatibility Rules (
ULC Floor/Ceiling Designs): If a fluted steel deck was factory-primed or painted by a previous tenant, standard SFRM can delaminate during a fire unless a ULC-approved deck bonding primer or mechanical metal lath is installed first. - 5. Full Floor-to-Ceiling Polyethylene Containment in Occupied Commercial Buildings: Wet cementitious slurry is messy if uncontained. In finished offices, retail units, and hospitals, our crew builds full poly containment enclosures, masks all T-bar grids, ductwork, cable trays, and fire sprinklers, and leaves the floor spotless.
- 6. Third-Party Inspection Readiness (
ASTM E605Pin Depth &ASTM E736Bond Logs): We verify wet and dry thickness at every patched beam web, flange tip, and deck flute so your third-party testing engineer can sign off on the first visit.
![Caliber Certified installer in white protective coveralls spraying 5" (R31) of 2lb closed-cell spray foam on a sloped cathedral ceiling roof deck in Toronto (Forest Hill & Rosedale) [JOB-2025-08-09-01]](/images/jobs/cathedral-ceiling-spray-foam/cathedral-ceiling-spray-foam-toronto-job-2025-08-09-01-2.webp)
Cementitious SFRM vs. Thin-Film Intumescent Steel Coating vs. 18-Mil DC315 Foam Thermal Barrier (2026 Matrix)
Because general contractors and building owners frequently confuse the three commercial fire protection systems, use this 2026 engineering comparison table to select the exact code-mandated coating for each substrate in your building:
| Technical Specification | Cementitious Fireproofing (SFRM) | Thin-Film Intumescent Steel Coating | IFTI DC315® Foam Thermal Barrier |
|---|---|---|---|
Target Substrate | Concealed Structural Steel, Joists & Concrete/Fluted Decks | Architecturally Exposed Structural Steel( AESS Columns/Beams) | Exposed Spray Polyurethane Foam( 2 lb or 0.5 lb SPF) |
Primary Canadian Fire Standard | CAN/ULC-S101(1-Hr to 4-Hr Structural Fire Resistance) | CAN/ULC-S101(45-Min to 3-Hr Structural Fire Resistance) | CAN/ULC-S124 & NFPA 286(15-Min Foam Thermal Barrier) |
Approved Product Umbrella | Monokote® MK-6/Z-106, Cafco® 300/400 & ULC Systems( BM-44C) | ADFI SprayFilm, Nullifire, Firetex & ULC Systems( BM-44C) | IFTI DC315® ( CCMC #14036-R), No-Burn® Plus ThB(BM-44B) |
2026 Installed Cost(/sq ft) | $3.25 – $7.50 / sq ft(Standard to Medium Density) | $6.50 – $16.50+ / sq ft(Multi-Coat Smooth Architectural) | $1.75 – $3.25 / sq ft(Or $4.25 – $7.50 Turnkey w/ 2 lb SPF) |
Finished Appearance | Rough cementitious/gypsum texture(usually above ceilings) | Smooth matte/semi-gloss architectural paint finish on steel | Smooth White, Ice Grey, Charcoal or Matte Black over SPF |
Same-Week Commercial SFRM Patching, Intumescent & Turnkey Spray Foam Dispatch Across Toronto & GTA
Every commercial fireproofing repair, tenant improvement respray, and turnkey spray foam package is executed by Sprayfoam Solutions Toronto Inc. with $0 surrounding GTA travel fee across Toronto, Mississauga, Brampton, Vaughan, Markham, Oakville, Burlington, Hamilton, Pickering, Ajax, Whitby, Oshawa, and Barrie:
Get an instant ballpark at /price-chat or send your inspector deficiency list / ULC design numbers to our desk.
We build full poly containment, mask MEP rough-ins, scrape loose edges, and apply ULC bonding adhesive.
Precision application of 15–40 lb SFRM on steel/decks and 2 lb SPF + 18-mil DC315 on adjacent envelope transitions.
We verify ULC thickness/density specs, strip all masking, and issue your signed CAN/ULC-S101 / S124 compliance binder.
Frequently Asked Questions
In 2026, commercial cementitious fireproofing (SFRM) patching and tenant fit-out resprays in Toronto and the GTA cost $3.25 to $7.50 per square foot installed by Sprayfoam Solutions Toronto Inc., depending on whether your ULC assembly requires 15 lb standard gypsum SFRM (Monokote® MK-6 / Cafco® 300), 22 lb medium-density Portland cement (Monokote® Z-106 / Cafco® 400), or 40 lb high-density SFRM. Localized mechanical/electrical trade-cut rescue packages typically range from $2,850 to $9,500. Call (647) 333-3626 or check your price in 60 seconds and claim a $250 Estimate Credit at spfsolutions.ca/price-chat.
As a Single-Source Certified Spray Foam & Fire Coating Contractor, Sprayfoam Solutions Toronto Inc. installs GCP Monokote® MK-6 / Z-106, Isolatek® Cafco® 300 / 400 & other ULC-listed structural fireproofing systems for CAN/ULC-S101 steel and concrete assemblies; IFTI DC315® (CCMC #14036-R), No-Burn® Plus ThB, Flame Control No. 60-60A & other approved CAN/ULC-S124 thermal barrier coatings; and BASF Walltite® Eco v.3, Huntsman Building Solutions (Icynene/Demilec), Johns Manville & other approved CCMC spray foam chemicals — Low-VOC HFO Blown.
No. Spraying expanding CAN/ULC-S705.1 2 lb closed-cell spray foam directly onto friable 15 lb/ft³ cementitious fireproofing causes cohesive tension during curing that pulls the fireproofing off the steel beam—voiding your CAN/ULC-S101 fire rating and ruining air barrier adhesion. Our engineering team properly masks and sequences transitions so structural steel receives certified SFRM or intumescent coating directly on the steel, while adjacent exterior wall/soffit substrates receive 2 lb closed-cell foam + 18-mil IFTI DC315®.
Standard 15 lb cementitious SFRM cannot be sprayed directly onto bare polyurethane foam without mechanically fastened metal lath and a specific tested thermal barrier listing, or the heavy wet plaster will delaminate. To protect exposed spray foam under 2026 Ontario Building Code Section 3.1.4.2, spraying 18 mils WFT (12 mils DFT) of IFTI DC315® (CCMC #14036-R) is lighter (<0.12 lbs/sq ft), faster, and specifically certified to CAN/ULC-S124 over closed-cell and open-cell foams.
Standard 15 lb/ft³ gypsum-based SFRM (Monokote MK-6 HY or Cafco 300) is designed for dry, concealed interior floor and ceiling plenums. Whenever structural steel or decking is exposed to high humidity, freeze-thaw cycling, high-velocity HVAC plenum airflow, or physical abrasion—such as underground parking garages, loading docks, elevator shafts, and mechanical rooms—architects specify 22 lb/ft³ medium-density (Monokote Z-106 / Cafco 400) or 40 lb/ft³ high-density (Monokote Z-146) Portland-cement fireproofing.
For localized mechanical, sprinkler, and electrical trade cuts inside partially finished retail units or offices, our crew erects floor-to-ceiling polyethylene containment around the work zone, wire-brushes the bare steel, applies ULC-listed latex bonding agent, and applies matching Monokote® or Cafco® material via precision detail hoppers or hand-trowelling to the exact ULC Design Number depth.
Upon completing your SFRM patching or hybrid spray foam + fire coating scope, Sprayfoam Solutions Toronto Inc. issues a complete Division 07 Compliance Package including product data sheets, ULC Design Number verification, bag/batch lot logs, ASTM E605 thickness pin-test logs, and our signed contractor compliance letter to satisfy your municipal building official and third-party engineer.
We offer rapid 48-to-72-hour dispatch across Toronto, Mississauga, Brampton, Vaughan, Markham, Oakville, Burlington, and Hamilton for urgent occupancy holds. Check your ballpark price in 60 seconds and claim a $250 Estimate Credit at spfsolutions.ca/price-chat (No Site Visit Required), submit your deficiency list via our General Contractor Bid Desk, or call (647) 333-3626.
Select your Division 07 fireproofing or spray foam service hub or local GTA municipality below for 2026 unit rates and same-week dispatch:
