California CSLB Insulation Contractor D-27 / C-61 Attorney Fee Petition Mechanics: Tyler Odyssey Civil Complaint Date as Primary Welch Anchor, CSLB License Check (D-27 / C-61) as Secondary Anchor (THE ONLY D-27 Insulation Page in This Series — DISTINCT FROM C-2 Insulation and Acoustical — ONLY Page With NAIMA Technical Bulletin Residential Insulation Guidelines Advisory [THE ONLY PAGE in the Fee-Petition-Mechanics Series With a NAIMA Advisory — PURE KETCHUM] and ASTM C665 Mineral Fiber Blanket Thermal Insulation Advisory; AHJ CEC Title 24 Part 6 Energy Compliance Inspection as Second Institutional Anchor; SPF Off-Ratio Isocyanate Respiratory Injury / Attic Batt Below CEC R-38 Certificate of Occupancy Withheld / Vapor Retarder Wrong-Side Interstitial Mold Three-Track Harm; Bus. & Prof. Code § 7031(b) Disgorgement), CLRA § 1780 Mandatory Attorney Fees

Statutory Framework: Bus. & Prof. Code § 7028, D-27 / C-61 Insulation, NAIMA Advisory, ASTM C665 Advisory, CEC Title 24 Part 6 Advisory, § 7031(b) Disgorgement, and CLRA § 1780 Mandatory Attorney Fees

California Business and Professions Code § 7028 prohibits unlicensed contracting. The CSLB D-27 (Insulation) limited specialty designation under C-61 authorizes: installation of fiberglass batt and roll insulation in residential attic, wall, and floor assemblies (kraft-faced, unfaced, and foil-faced product types); installation of blown-in loose-fill fiberglass and cellulose insulation for residential attic retrofits; installation of open-cell and closed-cell spray polyurethane foam insulation in residential crawlspaces, rim joists, basement walls, and roof deck applications; and installation of rigid foam board insulation (EPS, XPS, and polyisocyanurate) in residential foundation and crawlspace applications. D-27 does not cover: mechanical insulation of HVAC supply and return ductwork (requires C-20 HVAC or C-2 Insulation and Acoustical); pipe insulation for plumbing systems in commercial buildings (requires C-2 Insulation and Acoustical or C-36 Plumbing); industrial thermal insulation for process piping and equipment (requires C-2); or acoustical ceiling systems for commercial buildings (requires C-2). D-27 is distinct from C-2 because C-2 covers the full commercial and industrial insulation specialty requiring knowledge of mechanical engineering principles for heat transfer calculations, condensation control in commercial HVAC systems, and acoustic performance specifications for commercial interiors.

NAIMA Technical Bulletin 116 (published by the North American Insulation Manufacturers Association) is a private trade association publication — NOT a California statute, NOT California administrative code, NOT a federal regulation creating mandatory civil attorney fees. NAIMA Technical Bulletin 116 specifies: minimum installed R-value standards for residential applications — attic floor insulation minimum R-38 (CEC Climate Zone 16) to R-19 (Climate Zones 1–3, mild coastal); wall cavity insulation minimum R-13 for 2×4 walls, R-20 for 2×6 walls; floor insulation over unconditioned crawlspace minimum R-19; blown-in installation standards — insulation must be blown to achieve the full labeled R-value depth (verified by depth rulers installed every 300 square feet minimum); void elimination — batt insulation must fill the full cavity width without compression at pipe, wiring, or structural obstructions (compression reduces effective R-value: R-19 batt compressed to 3.5 inches in a 2×4 cavity provides only R-13 effective); vapor retarder placement — in California mixed climates (CEC Climate Zones 4–13), no vapor retarder is recommended in exterior wall assemblies using standard fiberglass batts; in heating-dominated zones (16, mountains), a Class II vapor retarder (kraft facing) on the warm-in-winter side (interior surface) is appropriate; installing a vapor retarder on the exterior (sheathing) side of the wall assembly in a heating-dominated climate traps moisture in the wall cavity during winter heating season. PURE KETCHUM: NAIMA Technical Bulletin 116 is a private NAIMA trade association publication — it creates no private civil right of action and no mandatory attorney fee-shifting mechanism for persons injured by unlicensed California D-27/C-61 contractors.

ASTM C665-12 Standard Specification for Mineral Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing is a private standard published by ASTM International — NOT a California statute, NOT California administrative code, NOT a federal regulation. ASTM C665-12 specifies: insulation type classification — Type I (unfaced blanket, mineral fiber including glass wool and mineral wool); Type II (faced one side, with kraft paper, foil, or polymer film vapor retarder/barrier); Type III (faced both sides); R-value determination by ASTM C518 (steady-state heat flux transducer method) or ASTM C177 (guarded hot plate method) — R-value must be determined at 75°F mean temperature; maximum moisture regain for faced products — maximum 3% moisture content by mass; combustibility — batt insulation must have maximum flame spread index 25 per ASTM E84 for Type II and III products with combustible facings installed in attic spaces where fire resistance is a concern; product performance must be verified by the manufacturer's certified test data using the appropriate ASTM test method for the product type. PURE KETCHUM: ASTM C665-12 is a private ASTM International standard — it creates no private civil right of action and no mandatory attorney fee-shifting mechanism; installed R-value deficiency claims are recoverable as CLRA actual damages when the insulation contractor is unlicensed and the work was performed under a consumer transaction.

Three Unique Distinctions in the Fee-Petition-Mechanics Series

• THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES with NAIMA TECHNICAL BULLETIN 116 RESIDENTIAL INSULATION GUIDELINES ADVISORY — private NAIMA trade association publication; minimum R-values: attic R-38 (Zone 16) to R-19 (Zones 1–3); wall cavity R-13 (2×4) / R-20 (2×6); floor over crawlspace R-19; blown-in depth rulers every 300 sq ft minimum; batt compression prohibition (R-19 batt compressed to 3.5 in = only R-13 effective); vapor retarder placement: no retarder in mixed-climate walls (Zones 4–13); kraft-faced vapor retarder on interior warm surface for Zone 16 heating-dominated; PURE KETCHUM — NAIMA Technical Bulletin 116 is a private NAIMA trade association publication, not a California statute, not California administrative code, creating no private civil right of action and no mandatory attorney fee-shifting mechanism; installed R-value deficiency is recoverable as CLRA actual damages: the NAIMA advisory generates pre-complaint research hours: (a) confirming CSLB C-61/D-27 license status at contractors.ca.gov; (b) obtaining the CEC Energy Compliance Form (CF2R or CF3R) for the project from the HERS registry (Home Energy Rating System) or building department records — confirming the required R-value for the project's CEC Climate Zone; (c) conducting an infrared thermography inspection (ASTM E1933) to identify voids, compressions, and gaps in the batt insulation installation — IR imaging at delta-T ≥ 10°F between indoor and outdoor temperature shows cold spots indicating insulation voids or compression; (d) measuring blown-in insulation depth against depth rulers (if installed) or probing with a measuring tape at 300 sq ft intervals to confirm blown-in depth achieves the required R-value depth per the manufacturer's coverage chart; (e) retaining a certified energy auditor or HERS rater to confirm as-installed R-value versus CEC Title 24 Part 6 required R-value; (f) quantifying energy billing premium — an attic insulated to R-19 when R-38 is required results in approximately 2× the heat loss through the attic compared to compliant installation, generating a quantifiable annual energy billing premium as CLRA actual damages.
• THE ONLY PAGE IN THE FEE-PETITION-MECHANICS SERIES with ASTM C665-12 MINERAL FIBER BLANKET THERMAL INSULATION ADVISORY — private ASTM International standard; Type I (unfaced), Type II (faced one side), Type III (faced both sides); R-value by ASTM C518 or C177 at 75°F mean temperature; maximum moisture regain 3% by mass for faced products; flame spread index maximum 25 per ASTM E84 for combustible-faced products in attic; PURE KETCHUM — ASTM C665-12 is a private ASTM International standard, not a California statute, not California administrative code, creating no private civil right of action; batt compression reducing effective R-value below labeled value is recoverable as CLRA actual damages; DISTINCT FROM NAIMA Technical Bulletin advisory [NAIMA specifies minimum R-value requirements and installation quality for residential insulation systems; ASTM C665 specifies product type classification, R-value test method, moisture regain, and combustibility requirements for mineral fiber blanket products]: the ASTM C665 advisory generates independent documentation: (a) identifying the specific insulation product installed by confirming the manufacturer's label on product wrappers or packaging (if available from the installation) — confirming the ASTM C665 type designation (I, II, or III); (b) confirming the labeled R-value and product thickness — R-19 batt is 6.25 inches nominally for fiberglass; if the cavity is only 3.5 inches deep (2×4 framing) and the contractor installed an R-19 batt compressed to 3.5 inches, the effective R-value is approximately R-13, not R-19; (c) requesting the manufacturer's ASTM C518 test data confirming the product's R-value at 75°F mean temperature for the specific batch or product code installed; (d) confirming moisture regain for faced products — if the product failed the ASTM C665 maximum 3% moisture regain specification, the vapor retarder facing was defective at installation and may have facilitated interstitial condensation moisture accumulation in the wall or ceiling cavity.
• THE ONLY page with SPF OFF-RATIO UNCURED ISOCYANATE MDI RESPIRATORY SENSITIZATION PERSONAL INJURY / ATTIC BLOWN-IN BELOW CEC TITLE 24 PART 6 R-38 MINIMUM CERTIFICATE OF OCCUPANCY WITHHELD REAL ESTATE SALE DAMAGE / VAPOR RETARDER ON WRONG SIDE OF WALL INTERSTITIAL CONDENSATION MOLD PROPERTY DAMAGE three-track harm — DISTINCT FROM C-2 Insulation and Acoustical [C-2 covers commercial/industrial pipe and HVAC duct insulation systems; D-27 covers limited specialty residential batt, blown, and spray foam insulation]: Track 1 — UNLICENSED D-27 CONTRACTOR APPLIES CLOSED-CELL SPF INSULATION IN CRAWLSPACE; B-SIDE (ISOCYANATE) COMPONENT TEMPERATURE BELOW MANUFACTURER'S MINIMUM 65°F PROCESSING TEMPERATURE; RATIO OF A-SIDE TO B-SIDE IS OFF BY 15%; UNCURED FREE MDI (METHYLENE DIPHENYL DIISOCYANATE) OFF-GASSES INTO CRAWLSPACE AND MIGRATES THROUGH FLOOR ASSEMBLY INTO LIVING SPACE → OCCUPANT EXPOSED TO MDI AT 0.04 PPM (ABOVE OSHA PEL 0.02 PPM) → OCCUPATIONAL ASTHMA ONSET WITH ACUTE RESPIRATORY RESPONSE → HOSPITALIZATION AND PERMANENT RESPIRATORY SENSITIZATION PERSONAL INJURY: SPF insulation that is applied off-ratio (insufficient polyol to react with all the isocyanate) leaves free, unreacted MDI in the cured foam matrix; MDI is a potent respiratory sensitizer with an OSHA PEL of 0.02 ppm (ceiling limit 0.02 ppm per 8 hours); once sensitized, a person may experience severe asthma attacks from future exposure to MDI at any concentration, including from other SPF applications elsewhere in the building or from products containing MDI; the occupant of a home with off-ratio SPF insulation installed in the crawlspace may be exposed to MDI through ventilation gaps in the floor assembly; the resulting occupational asthma and permanent respiratory sensitization constitutes personal injury recoverable as CLRA actual damages; medical costs, permanent disability, and future medical monitoring are recoverable; Track 2 — UNLICENSED D-27 CONTRACTOR INSTALLS BLOWN-IN FIBERGLASS INSULATION IN ATTIC OF NEW CONSTRUCTION HOME IN CEC CLIMATE ZONE 16 (TRUCKEE/TAHOE REGION); INSTALLED DEPTH 7.25 INCHES = R-25 EFFECTIVE; CEC TITLE 24 PART 6 REQUIRES R-38 FOR CLIMATE ZONE 16 ATTIC FLOOR; AHJ ENERGY COMPLIANCE INSPECTOR MEASURES DEPTH AND REJECTS FINAL INSPECTION → HOME CANNOT RECEIVE CERTIFICATE OF OCCUPANCY → REAL ESTATE PURCHASE CLOSING DELAYED 8 WEEKS WHILE REMEDIATION IS PERFORMED → BUYER INCURS $4,500 IN TEMPORARY HOUSING COSTS AND $6,200 IN REAL ESTATE CARRYING COSTS: CEC Title 24 Part 6 requires an AHJ energy compliance inspection confirming installed insulation meets the required R-value for the project's CEC Climate Zone before issuing the final Certificate of Occupancy; an unlicensed D-27 contractor who installs blown-in insulation to R-25 in a Zone 16 project requiring R-38 creates a CEC compliance deficiency that will be identified at the HERS field verification inspection; the AHJ will not issue a final Certificate of Occupancy until the insulation is brought up to R-38; the delay in receiving the Certificate of Occupancy causes real estate purchase transaction damages (temporary housing, carrying costs, lender rate-lock extensions) recoverable as CLRA actual damages; Track 3 — UNLICENSED D-27 CONTRACTOR INSTALLS KRAFT-FACED R-15 BATT INSULATION IN EXTERIOR WALL CAVITIES OF HOME IN CEC CLIMATE ZONE 9 (FRESNO/CENTRAL VALLEY); KRAFT FACING (VAPOR RETARDER) INSTALLED FACING THE EXTERIOR SHEATHING SIDE OF THE WALL; IN MIXED-HOT CLIMATE ZONE 9, THE VAPOR DRIVE IS OUTWARD IN WINTER AND INWARD IN SUMMER; VAPOR RETARDER ON THE EXTERIOR SIDE TRAPS MOISTURE DRIVEN FROM INTERIOR HUMID AIR IN WINTER; FIBERGLASS BATT BECOMES SATURATED; MOLD GROWS ON KRAFT FACING, OSB SHEATHING, AND WOOD STUDS WITHIN 18 MONTHS → CDPH INDOOR AIR QUALITY MOLD INSPECTOR CONFIRMS ELEVATED MOLD SPORE COUNTS IN MULTIPLE ROOMS → $18,500 MOLD REMEDIATION PROPERTY DAMAGE: NAIMA Technical Bulletin 116 advises against installing vapor retarders in exterior wall assemblies in California mixed-climate zones (CEC Zones 4–13) because the vapor drive is bidirectional and a retarder on either face can trap moisture; an unlicensed D-27 contractor who installs kraft-faced batts facing-out in a Zone 9 house creates an interstitial condensation risk that causes mold growth in wall cavities; CDPH indoor air quality standards (17 CCR § 35000) are administrative enforcement; the property damage from mold remediation and the mold-related personal injury (respiratory effects) are recoverable as CLRA actual damages.

PURE KETCHUM for Bus. & Prof. Code § 7028 D-27 / C-61 Insulation violations: NAIMA Technical Bulletin 116 is a private NAIMA trade association publication — no private civil right of action, no mandatory attorney fee-shifting; ASTM C665-12 is a private ASTM International standard — PURE KETCHUM; AHJ CEC Title 24 Part 6 energy compliance inspection is California administrative — administrative enforcement; CLRA § 1780 mandatory attorney fee entitlement is pure Ketchum; Ketchum v. Moses 24 Cal.4th 1122 (2001); PLCM Group Inc. v. Drexler 22 Cal.4th 1084 (2000); Hensley v. Eckerhart 461 U.S. 424 (1983); Missouri v. Jenkins 491 U.S. 274 (1989) fees-on-fees.

Primary Welch Anchor: Tyler Odyssey Civil Complaint Filing Date

The Tyler Odyssey civil complaint filing date is the primary Welch temporal anchor for D-27 insulation matters. The attorney files after confirming CSLB C-61/D-27 license status, obtaining the CEC Energy Compliance Forms from the HERS registry, conducting IR thermography to document insulation voids, confirming SPF product batch certification for off-ratio incidents, retaining a certified energy auditor or HERS rater, and serving the CLRA § 1782 demand. The CSLB D-27/C-61 License Check date is the secondary Welch anchor. Ketchum v. Moses 24 Cal.4th 1122 (2001); PLCM Group Inc. v. Drexler 22 Cal.4th 1084 (2000).

Secondary Anchor: CSLB License Check (D-27 / C-61 Insulation) — THE ONLY D-27 Specialty Anchor in the Fee-Petition-Mechanics Series

The CSLB License Check must confirm the C-61/D-27 Insulation limited specialty designation — distinct from C-2 (full specialty covering commercial/industrial mechanical insulation systems). Three scenarios generate § 7028 liability: (a) no CSLB license at all; (b) expired, suspended, or revoked C-61/D-27 license; (c) a general handyman or construction laborer who performs residential insulation installation as a standalone service without holding the D-27 limited specialty. This page is THE ONLY D-27 Insulation specialty anchor in the fee-petition-mechanics series — distinct from C-2.

Billing Gap 1 — CSLB D-27/C-61 License Check, CEC Title 24 Part 6 Energy Compliance Review, NAIMA R-Value Documentation, ASTM C665 Product Verification, and § 1782 Demand (5.25 hrs/yr = $1,575–$2,625)

The first billing gap covers pre-complaint advisory for D-27 insulation matters.

• Searching CSLB License Check for C-61/D-27 designation and establishing the secondary Welch anchor: confirming D-27 limited specialty presence or absence; evaluating C-2 distinction (full commercial/industrial insulation specialty vs. limited residential thermal insulation); confirming license status, bond, and workers compensation.
• Reviewing CEC Title 24 Part 6 energy compliance inspection records — second institutional anchor: obtaining the CF2R and CF3R compliance forms from the HERS registry for the project; confirming the required R-value for the project's CEC Climate Zone; confirming whether the AHJ energy compliance inspection passed or failed; confirming HERS rater field verification records.
• Documenting installed R-value against NAIMA minimum specifications: conducting IR thermography inspection; measuring blown-in depth with depth rulers; documenting batt compression at framing members; retaining a certified HERS rater to quantify as-installed R-value versus CEC requirement.
• Verifying SPF product batch documentation for off-ratio incidents: obtaining manufacturer's Certificate of Compliance for the SPF product batch; confirming B-side (isocyanate) processing temperature requirements from product data sheet; documenting ambient temperature at installation from contractor's records or weather service data.
• Serving CLRA § 1782 demand incorporating NAIMA and ASTM C665 advisory analysis: demand specifies D-27 unlicensed contracting, identifies three harm tracks, demands disgorgement under § 7031(b), and specifies CLRA § 1780 mandatory attorney fees.

Billing Gap 2 — Active Litigation: Energy Auditor, Industrial Hygienist, and Three-Track Damage Quantification (4.00 hrs/yr = $1,200–$2,000)

The second billing gap covers expert coordination across the three D-27 harm tracks.

• Retaining a certified HERS rater and energy auditor for Track 2 R-value noncompliance: HERS rater conducts as-built insulation verification; quantifies energy billing premium from below-code insulation as CLRA actual damages; provides cost estimate for remediation (additional blown-in to reach required R-value).
• Retaining an industrial hygienist for Track 1 SPF off-ratio respiratory injury: industrial hygienist collects air samples for MDI analysis (NIOSH Method 5522); interprets MDI concentration relative to OSHA PEL 0.02 ppm; documents occupant exposure history; provides exposure-response analysis for permanent respiratory sensitization.
• Retaining a mold inspector for Track 3 vapor retarder wrong-side mold: CDPH-certified mold inspector (California Health and Safety Code § 17920.3) documents elevated spore counts; retains a building scientist to model vapor drive and confirm wrong-side vapor retarder as the moisture source; quantifies remediation scope and cost as CLRA actual damages.
• Settlement valuation incorporating all three harm tracks and CLRA § 1780 mandatory attorney fees: D-27 three-track settlement demand integrates energy billing premium, medical costs for respiratory sensitization, mold remediation costs, and CLRA mandatory attorney fees.

Billing Gap 3 — CLRA § 1780 Fee Petition, Pure Ketchum Multiplier, Lodestar Documentation, and Missouri v. Jenkins Fees-on-Fees (4.00 hrs/yr = $1,200–$2,000)

The third billing gap covers fee recovery preparation across all three D-27 harm tracks.

• Documenting the CLRA § 1780 lodestar from the CSLB D-27/C-61 License Check date: CEC Title 24 compliance form retrieval; HERS registry records; IR thermography documentation; SPF product batch certification; industrial hygienist air sampling and MDI analysis; mold inspector documentation — all fee-petition-eligible.
• Briefing the pure Ketchum multiplier: novelty/difficulty — NAIMA R-value degradation from batt compression (R-value reduction as a function of compression ratio: installed thickness / nominal thickness, with R-value proportional to thickness for fibrous insulation); ASTM C665 R-value test protocol (ASTM C518 mean temperature 75°F, sample conditioning per ASTM C1758); SPF off-ratio MDI exposure analysis (MDI vapor pressure, ceiling temperature effect on vapor pressure, indoor air modeling for MDI migration from crawlspace to living space); vapor drive analysis for bidirectional mixed-climate wall assembly (psychrometric chart analysis for Zone 9 wall assembly in winter heating conditions); Ketchum v. Moses 24 Cal.4th 1122 (2001); PLCM Group Inc. v. Drexler 22 Cal.4th 1084 (2000).
• Missouri v. Jenkins fees-on-fees for the fee petition: Missouri v. Jenkins 491 U.S. 274 (1989); Hensley v. Eckerhart 461 U.S. 424 (1983).

Total Annual Billing Gap — Three-Gap Summary

• Gap 1 (D-27 CSLB search, CEC energy compliance review, NAIMA R-value documentation, ASTM C665 product verification, § 1782 demand): 5.25 hrs = $1,575–$2,625/yr
• Gap 2 (HERS rater, industrial hygienist, mold inspector, three-track damage quantification): 4.00 hrs = $1,200–$2,000/yr
• Gap 3 (CLRA § 1780 fee petition, pure Ketchum multiplier, lodestar documentation, fees-on-fees): 4.00 hrs = $1,200–$2,000/yr
• Total: 13.25 hrs = $3,975–$6,625/yr untracked at $300–$500/hr median California solo practitioner rate