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InternationalNFPA 285 Approved Wall Assemblies with Xci Foil (Class A) or Xci 286 Exterior Insulation
| Wall Component | Materials |
| Base Wall – Use 1, 2, 3 or 4 | 1 – Cast Concrete Walls
2 – CMU Concrete Walls 3 – 25-gauge min. 3 5/8″ (min.) steel studs spaced 24″ o.c. (max.) a. 5/8″ Type X gypsum wallboard interior b. Lateral bracing every 4′ 4 – FRTW (fire-retardant-treated wood) studs: min. nominal 2×4 dimension, spaced 24″ o.c. (max.) a. 5/8″ Type X gypsum wallboard interior b. Bracing as required by code |
| Fire-Stopping at Floor Lines | 1 – Any approved mineral-fiber-based safing insulation in each stud cavity at floor line. Safing thickness must match stud cavity depth.
2 – Soild FRTW fire blocking at floor line in accordance with building code requirements for Type III construction. |
| Cavity Insulation – Use either 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11
Items 8, 9, 10 and 11 may only be used with exterior sheathing 2. |
1 – None
2 – 1 1/2″ (min.) of Carlisle SPI SealTite PRO (up to full cavity thickness) 3 – 1 1/2″ (min.) of BASF Walltite SPF (up to full cavity thickness) 4 – Any noncombustible insulation per ASTM E136 5 – Any mineral fiber (Board type Class A ASTM E84 faced or unfaced) 6 – Any fiberglass (Batt type Class A ASTM E84 faced or unfaced) 7 – Any foam plastic insulation (SPF or board type) that has been tested per ASTM E1354 (at a min. of 20 kW/m2 heat flux) and shown by analysis to be less flammable (improved Tign, PK. HRR) than Covestro EcoBay CC or BASF Walltite 8 – NCFI InsulBloc SPF (up to full cavity thickness) 9 – Icynene MD-C-200v3 (Proseal) up to 5 1/2″ (only with 1/2″ [min.] exterior gypsum sheathing) 10 – SWD Urethane Quik-Shiled 112 up to 6 inch (max.) stud cavities with an air gap not exceeding 2 1/2″ 11 – 1 1/2″ (min.) Thermoseal 2000 (up to full cavity thickness) |
| Exterior Sheathing Use either 1, 2 or 3 | 1 – None (only with cavity insulation 1, 2, 3, 4, 5 or 6)
2 – 1/2″ or thicker exterior gypsum sheathing 3 – 1/2″ (min.) FRTW structural panels in Type III construction |
| Multi-Function Sheathing & WRB Products
Use 1 or 2 |
1 – USG Securock® Exoair® 430 System
2 – 5/8″ Georgia Pacific DensElement, flashing with Prosoco R-Guard FastFlash on sheathing joints Note: Item 1 or 2 replaces the exterior sheathings above. When either of these items are used, do not use exterior sheathings or WRB’s on base wall surface in Table 9 |
| WRB Over Base Wall Surface | 1 – None
2 – W. R. MEADOWS AIR-SHIELD LMP (Gray) 3 – W. R. MEADOWS AIR-SHIELD LMP (Black) 4 – W. R. MEADOWS AIR-SHIELD TMP 5 – W. R. MEADOWS AIR-SHIELD LSR |
| Exterior Insulation Use either 1 or 2 depending on cladding | 1 – 3 1/2″-thick (max.) Xci Foil (Class A) or Xci-286 for all claddings.
2 – 4″ thick Xci Foil (Class A) or Xci-286 for claddings 1-6 Note: A construction which utilizes no exterior sheathing may not use spray foam cavity insulation |
NFPA 285 Approved Wall Assemblies with Xci Foil (Class A) or Xci 286 Exterior Insulation
| Wall Component | Materials |
| WRB Over Exterior Insulation | 1 – None
2 – W. R. MEADOWS AIR-SHIELD LMP (Gray) 3 – W. R. MEADOWS AIR-SHIELD LMP (Black) 4 – W. R. MEADOWS AIR-SHIELD TMP 5 – W. R. MEADOWS AIR-SHIELD LSR |
| Exterior Cladding
Use either 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or 17 Item 7 may use any tested/approved installation technique.
Items 8, 9, or 12 may use any standard installation technique. |
1 – Brick – Nominal 4″-thick, clay or concrete brick or veneer with maximum 2″ air gap behind the brick. Brick ties/Anchors 24″ o.c. (max.)
2 – Stucco – Minimum 3/4″-thick, exterior cement plaster and lath. For systems that require a more durable WRB system, any building wrap or 15# felt that meets requirement #12 in WRB Over Exterior Insulation can be used as a ship sheet between the WRB/exterior insulation and the lath. 3 – Limestone – Minimum 2″ thick using any standard non-open joint installation technique such as shiplap. 4 – Natural stone veneer – Minimum 2″ thick using any standard non-open joint installation technique such as grouted/mortared stone. 5 – Cast Artificial Stone – Minimum 1 1/2″ thick complying with ICC-ES AC 51 using any standard non-open joint installation technique such as shiplap. 6 – Terra Cotta Cladding – Minimum 1 1/4″ thick (solid or equivalent by weight) using any standard open or non-open joint installation technique such as shiplap. 7 – Any MCM that has passed NFPA 285. 8 – Uninsulated sheet metal building panels including steel, copper, aluminum or zinc. 9 – 1/4″ (min.) uninsulated fiber-cement siding, or porcelain or ceramic tile mechanically attached. 10 – Stone, porcelain, ceramic/aluminum honeycomb composite building panels that have successfully passed NFPA 285 criteria. 11 – Autoclaved-aerated-concrete (AAC) panels that have successfully passes NFPA 285 criteria. 12 – Terra Cotta Cladding – Any Rain-screen Terra Cotta (min. 1/2″ thick) with ventilated shiplap. 13 – 1/2″ Stucco – Any one coat stucco (1/2″ min.) that meets AC11 acceptance criteria or is approved for use in Type I-IV construction or has been tested per NFPA 285 or stays in place when tested per ASTM E119 (stucco exposed to fire) for at least 30 minutes. 14 – Thin brick/cultured stone set in thin set adhesive and metal lath that has been tested to ASTM E119 (brick exposed to furnace) and remains in place for a minimum of 30 minutes, or has passed a NFPA 285 test. Minimum 3/4″. For these systems that require a more durable WRB system, any building wrap or 15# felt that meets requirement #9 in WRB Over Exterior Insulation (Table 9) can be used as a slip sheet between the WRB/AVP and the lath. 15 – Glen Gery Thin Tech Elite Series Masonry Veneer or TABS II Panel System with 1/2″-thick bricks using TABS Wall Adhesive. 16 – Natural Stone Veneer – minimum 1 1/4″ thick using any standard installation technique. 17 – FunderMax M.Lock – minimum 1/4″ thick using any standard installation technique. |
NFPA 285 Approved Wall Assemblies with Xci CG (Class A) Exterior Insulation
| Wall Component | Materials |
| Base Wall – Use 1, 2, 3 or 4 | 1 – Cast Concrete Walls
2 – CMU Concrete Walls 3 – 25-gauge min. 3 5/8″ (min.) steel studs spaced 24″ o.c. (max.) a. 5/8″ Type X gypsum wallboard interior b. Lateral bracing every 4′ 4 – FRTW (fire-retardant-treated wood) studs: min. nominal 2×4 dimension, spaced 24″ o.c. (max.) a. 5/8″ Type X gypsum wallboard interior b. Bracing as required by code |
| Fire-Stopping at Floor Lines | 1 – Any approved mineral-fiber-based safing insulation in each stud cavity at floor line. Safing thickness must match stud cavity depth.
2 – Soild FRTW fire blocking at floor line in accordance with building code requirements for Type III construction. |
| Cavity Insulation – Use either 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11
Items 8, 9, 10 and 11 may only be used with exterior sheathing 2. |
1 – None
2 – 1 1/2″ (min.) of Carlisle SPI SealTite PRO (up to full cavity thickness) 3 – 1 1/2″ (min.) of BASF Walltite SPF (up to full cavity thickness) 4 – Any noncombustible insulation per ASTM E136 5 – Any mineral fiber (Board type Class A ASTM E84 faced or unfaced) 6 – Any fiberglass (Batt type Class A ASTM E84 faced or unfaced) 7 – Any foam plastic insulation (SPF or board type) that has been tested per ASTM E1354 (at a min. of 20 kW/m2 heat flux) and shown by analysis to be less flammable (improved Tign, PK. HRR) than Covestro EcoBay CC or BASF Walltite 8 – NCFI InsulBloc SPF (up to full cavity thickness) 9 – Icynene MD-C-200v3 (Proseal) up to 5 1/2″ (only with 1/2″ [min.] exterior gypsum sheathing) 10 – SWD Urethane Quik-Shiled 112 up to 6 inch (max.) stud cavities with an air gap not exceeding 2 1/2″ 11 – 1 1/2″ (min.) Thermoseal 2000 (up to full cavity thickness) |
| Exterior Sheathing Use either 1, 2 or 3 | 1 – None (only with claddings, and cavity insulation 1, 2, 3, 4, 5, 6 or 11)
2 – 1/2″ or thicker exterior gypsum sheathing 3 – 1/2″ (min.) FRTW structural panels in Type III construction |
| Multi-Function Sheathing & WRB Products Use 1 or 2 | 1 – USG Securock® Exoair® 430 System
2 – 5/8″ Georgia Pacific DensElement, flashing with Prosoco R-Guard FastFlash on sheathing joints Note: Item 1 or 2 replaces the exterior sheathings above. When either of these items are used, do not use exterior sheathings or WRB’s on base wall surface in Table 9 |
| WRB Over Base Wall Surface | 1 – None
2 – W. R. MEADOWS AIR-SHIELD LMP (Gray) 3 – W. R. MEADOWS AIR-SHIELD LMP (Black) 4 – W. R. MEADOWS AIR-SHIELD TMP 5 – W. R. MEADOWS AIR-SHIELD LSR |
| Exterior Insulation Use either 1 or 2 depending on cladding | 1 – 3 1/2″-thick (max.) Xci CG or Xci CG (Class A) for all claddings.
2 – 4″-thick (max.) Xci CG or Xci CG (Class A) for claddings 1-6. Note: A construction which utilizes no exterior sheathing may not use spray foam cavity insulation |
NFPA 285 Approved Wall Assemblies with Xci CG (Class A) Exterior Insulation
| Wall Component | Materials |
| WRB Over Exterior Insulation | 1 – None
2 – W. R. MEADOWS AIR-SHIELD LMP (Gray) 3 – W. R. MEADOWS AIR-SHIELD LMP (Black) 4 – W. R. MEADOWS AIR-SHIELD TMP 5 – W. R. MEADOWS AIR-SHIELD LSR |
| Exterior Cladding
Use either 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or 17 Item 7 may use any tested/approved installation technique.
Items 8, 9, or 12 may use any standard installation technique. |
1 – Brick – Nominal 4″-thick, clay or concrete brick or veneer with maximum 2″ air gap behind the brick. Brick ties/Anchors 24″ o.c. (max.)
2 – Stucco – Minimum 3/4″-thick, exterior cement plaster and lath. For systems that require a more durable WRB system, any building wrap or 15# felt that meets requirement #12 in WRB Over Exterior Insulation can be used as a slip sheet between the WRB/exterior insulation and the lath. 3 – Limestone – Minimum 2″ thick using any standard non-open joint installation technique such as shiplap. 4 – Natural stone veneer – Minimum 2″ thick using any standard non-open joint installation technique such as grouted/mortared stone. 5 – Cast Artificial Stone – Minimum 1 1/2″ thick complying with ICC-ES AC 51 using any standard non-open joint installation technique such as shiplap. 6 – Terra Cotta Cladding – Minimum 1 1/4″ thick (solid or equivalent by weight) using any standard open or non-open joint installation technique such as shiplap. 7 – Any MCM that has passed NFPA 285. 8 – Uninsulated sheet metal building panels including steel, copper, aluminum (or zinc only with Xci CG [Class A]) 9 – 1/4″ (min.) uninsulated fiber-cement siding, or porcelain or ceramic tile mechanically attached. 10 – Stone, porcelain, ceramic/aluminum honeycomb composite building panels that have successfully passed NFPA 285 criteria. 11 – Autoclaved-aerated-concrete (AAC) panels that have successfully passes NFPA 285 criteria. 12 – Terra Cotta Cladding – Any Rain-screen Terra Cotta (min. 1/2″ thick) with ventilated shiplap. 13 – 1/2″ Stucco – Any one coat stucco (1/2″ min.) that meets AC11 acceptance criteria or is approved for use in Type I-IV construction or has been tested per NFPA 285 or stays in place when tested per ASTM E119 (stucco exposed to fire) for at least 30 minutes. 14 – Thin brick/cultured stone set in thin set adhesive and metal lath that has been tested to ASTM E119 (brick exposed to furnace) and remains in place for a minimum of 30 minutes, or has passed a NFPA 285 test. Minimum 3/4″. For these systems that require a more durable WRB system, any building wrap or 15# felt that meets requirement #9 in WRB Over Exterior Insulation (Table 9) can be used as a slip sheet between the WRB/AVP and the lath. 15 – Glen Gery Thin Tech Elite Series Masonry Veneer or TABS II Panel System with 1/2″-thick bricks using TABS Wall Adhesive. 16 – Natural Stone Veneer – minimum 1 1/4″ thick using any standard installation technique. 17 – FunderMax M.Lock – minimum 1/4″ thick using any standard installation technique. |
NFPA 285 Approved Wall Assemblies with Xci Ply (Class A) Exterior Insulation
| Wall Component | Materials |
| Base Wall – Use 1, 2, 3 or 4 | 1 – Cast Concrete Walls
2 – CMU Concrete Walls 3 – 25-gauge min. 3 5/8″ (min.) steel studs spaced 24″ o.c. (max.) a. 5/8″ Type X gypsum wallboard interior b. Lateral bracing every 4′ 4 – FRTW (fire-retardant-treated wood) studs: min. nominal 2×4 dimension, spaced 24″ o.c. (max.) a. 5/8″ Type X gypsum wallboard interior b. Bracing as required by code |
| Fire-Stopping at Floor Lines | 1 – Any approved mineral-fiber-based safing insulation in each stud cavity at floor line. Safing thickness must match stud cavity depth.
2 – Soild FRTW fire blocking at floor line in accordance with building code requirements for Type III construction. |
| Cavity Insulation – Use either 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11
Items 8, 9, 10 and 11 may only be used with exterior sheathing 2. |
1 – None
2 – 1 1/2″ (min.) of Carlisle SPI SealTite PRO (up to full cavity thickness) 3 – 1 1/2″ (min.) of BASF Walltite SPF (up to full cavity thickness) 4 – Any noncombustible insulation per ASTM E136 5 – Any mineral fiber (Board type Class A ASTM E84 faced or unfaced) 6 – Any fiberglass (Batt type Class A ASTM E84 faced or unfaced) 7 – Any foam plastic insulation (SPF or board type) that has been tested per ASTM E1354 (at a min. of 20 kW/m2 heat flux) and shown by analysis to be less flammable (improved Tign, PK. HRR) than Covestro EcoBay CC or BASF Walltite 8 – NCFI InsulBloc SPF (up to full cavity thickness) 9 – Icynene MD-C-200v3 (Proseal) up to 5 1/2″ (only with 1/2″ [min.] exterior gypsum sheathing) 10 – SWD Urethane Quik-Shiled 112 up to 6 inch (max.) stud cavities with an air gap not exceeding 2 1/2″ 11 – 1 1/2″ (min.) Thermoseal 2000 (up to full cavity thickness) |
| Exterior Sheathing Use either 1, 2 or 3 | 1 – None (only with cavity insulation 1, 2, 4, 5 or 6)
2 – 1/2″ or thicker exterior gypsum sheathing 3 – 1/2″ (min.) FRTW structural panels in Type III construction |
| Multi-Function Sheathing & WRB Products
Use 1 or 2 |
1 – USG Securock® Exoair® 430 System
2 – 5/8″ Georgia Pacific DensElement, flashing with Prosoco R-Guard FastFlash on sheathing joints Note: Item 1 or 2 replaces the exterior sheathings above. When either of these items are used, do not use exterior sheathings or WRB’s on base wall surface in Table 9 |
| WRB Over Base Wall Surface | 1 – None
2 – W. R. MEADOWS AIR-SHIELD LMP (Gray) 3 – W. R. MEADOWS AIR-SHIELD LMP (Black) 4 – W. R. MEADOWS AIR-SHIELD TMP 5 – W. R. MEADOWS AIR-SHIELD LSR |
| Exterior Insulation Use either 1 or 2
depending on cladding |
1 – 4 1/4″-thick (max.) Xci Ply (Class A) (3 1/2″ foam max., 3/4″ FR Plywood max.) with all claddings.
2 – 4 3/4″-thick (max.) Xci Ply (Class A) (4″ foam max., 3/4″ FR Plywood max.) may be used with claddings 1-6. |
NFPA 285 Approved Wall Assemblies with Xci Ply (Class A) Exterior Insulation
| Wall Component | Materials |
| WRB Over Exterior Insulation | 1 – None
2 – W. R. MEADOWS AIR-SHIELD LMP (Gray) 3 – W. R. MEADOWS AIR-SHIELD LMP (Black) 4 – W. R. MEADOWS AIR-SHIELD TMP 5 – W. R. MEADOWS AIR-SHIELD LSR |
| Exterior Cladding
Use either 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or 17 Item 9 may use any tested/approved installation technique.
Items 10, 11 or 14 may use any standard installation technique. |
1 – Brick – Nominal 4″-thick, clay or concrete brick or veneer with maximum 2″ air gap behind the brick. Brick ties/Anchors 24″ o.c. (max.)
2 – Stucco – Minimum 3/4″-thick, exterior cement plaster and lath. For systems that require a more durable WRB system, any building wrap or 15# felt that meets requirement #9 in WRB Over Exterior Insulation can be used as a slip sheet between the WRB/exterior insulation and the lath. 3 – Limestone – Minimum 2″ thick using any standard non-open joint installation technique such as shiplap. 4 – Natural stone veneer – Minimum 2″ thick using any standard non-open joint installation technique such as grouted/mortared stone. 5 – Cast Artificial Stone – Minimum 1 1/2″ thick complying with ICC-ES AC 51 using any standard non-open joint installation technique such as shiplap. 6 – Terra Cotta Cladding – Minimum 1 1/4″ thick (solid or equivalent by weight) using any standard open or non-open joint installation technique such as shiplap. 7 – Thin brick/cultured stone set in thin set adhesive and metal lath that has been tested to ASTM E119 (brick exposed to furnace) and remains in place for a minimum of 30 minutes, or has passed a NFPA 285 test. Minimum 3/4″. For these systems that require a more durable WRB system, any building wrap or 15# felt that meets requirement #9 in WRB Over Exterior Insulation (Table 9) can be used as a slip sheet between the WRB/AVP and the lath. 8 – Glen Gery Thin Tech Elite Series Masonry Veneer or TABS II Panel System with 1/2″-thick bricks using TABS Wall Adhesive. 9 – Any MCM that has passed NFPA 285. 10 – Uninsulated sheet metal building panels including steel, copper, aluminum (or zinc only with Xci Ply [Class A]) 11 – 1/4″ (min.) uninsulated fiber-cement siding, or porcelain or ceramic tile mechanically attached. 12 – Stone, porcelain, ceramic/aluminum honeycomb composite building panels that have successfully passed NFPA 285 criteria. 13 – Autoclaved-aerated-concrete (AAC) panels that have successfully passes NFPA 285 criteria. 14 – Terra Cotta Cladding – Any Rain-screen Terra Cotta (min. 1/2″ thick) with ventilated shiplap. 15 – 1/2″ Stucco – Any one coat stucco (1/2″ min.) that meets AC11 acceptance criteria or is approved for use in Type I-IV construction or has been tested per NFPA 285 or stays in place when tested per ASTM E119 (stucco exposed to fire) for at least 30 minutes. 16 – Natural Stone Veneer – minimum 1 1/4″ thick using any standard installation technique. 17 – FunderMax M.Lock – minimum 1/4″ thick using any standard installation technique. |
NFPA 285 Approved Mass Wall Assemblies with Xci as Interior Insulation
| Wall Component | Materials |
| Base Wall – Use either 1 or 2 | 1 – Cast Concrete Walls (min. 2″ thick)
2 – CMU Concrete Walls (min. 4″ thick) |
| Exterior Coating – Use either 1, 2, 3 or 4 | 1 – Portland cement or lime stucco
2 – Any ASTM E84 Class A Paint or Elastomeric Coating 3 – Any ASTM E84 Class A Clear Sealer 4 – None |
| Air/Vapor Barrier Membrane Position 1 Over Base Wall Interior | 1 – None
2 – W. R. MEADOWS AIR-SHIELD LMP (Gray) 3 – W. R. MEADOWS AIR-SHIELD LMP (Black) 4 – W. R. MEADOWS AIR-SHIELD TMP 5 – W. R. MEADOWS AIR-SHIELD LSR |
| Note: Some WRBs are only allowed with specific systems. | |
| Continuous Insulation – Use 1, 2, 3 | 1 – Xci Foil (Class A) (or Xci-286), 3 1/2″ thick (max.)
2 – Xci CG (Class A) or Xci CG, 3 1/3″ thick (max.) 3 – Xci Foil, 3 1/3″ thick (max.) |
| Air/Vapor Barrier Membrane Position 2 Over Insulation | 1 – None
2 – W. R. MEADOWS AIR-SHIELD LMP (Gray) 3 – W. R. MEADOWS AIR-SHIELD LMP (Black) 4 – W. R. MEADOWS AIR-SHIELD TMP 5 – W. R. MEADOWS AIR-SHIELD LSR |
| Note: Insulation Joints may be taped with Foil-Grip 1402, 4″ width (max.) | |
| Note: Some WRBs are only allowed with specific systems. | |
| Interior Cladding | 1 – 5/8″ type X interior gypsum sheathing installed directly over the insulation or installed over metal hat or Z furring, max. 2″ depth air gap. If an air gap is created, fire blocking per IBC Section 718 should be installed. |
Information obtained from Hunter Panels LLC Technical Evaluation Report 1402-01 Issue Date: July 21, 2014
Revision Date: September 12, 2019
08-2020
Full NFPA testing documents are available. Please contact us to request these documents.