{
  "schema": "brandlab/1",
  "generated": "2026-07-15",
  "brand": {
    "id": "brand:johns-manville",
    "name": "Johns Manville",
    "sameAs": "https://www.jm.com",
    "hq": "Denver, Colorado",
    "retailer": { "name": "Super Arbor", "url": "https://superarbor.io", "collection": "https://superarbor.io/collections/johns-manville", "intake": "https://superarbor.io/pages/send-a-list" },
    "tokens": { "accent": "#0067b1" }
  },

  "claims": [
    { "id": "claim:rvalue", "kind": "derived", "status": "verified", "lastVerified": "2026-07-15",
      "text": "R-value measures resistance to conductive heat flow. Since 1979 the FTC's R-value Rule (16 CFR Part 460) has required standardized testing behind every number printed on a bag — and dictates the label's one-line translation, verbatim: \"R means resistance to heat flow. The higher the R-value, the greater the insulating power.\"",
      "sources": [{ "url": "https://www.ecfr.gov/current/title-16/chapter-I/subchapter-D/part-460" }, { "url": "https://www.ftc.gov/legal-library/browse/rules/r-value-rule" }] },
    { "id": "claim:fiberglass", "kind": "manufacturer_claim", "status": "verified", "lastVerified": "2026-07-15",
      "text": "Fiberglass insulation is spun glass — molten glass drawn into fine fibers that trap still air, and trapped air slows heat flow. Batts come pre-cut for standard stud bays; rolls run continuous; blown-in loose fill covers attic floors and irregular cavities. Johns Manville was the first fiberglass insulation manufacturer to stop using a formaldehyde-based binder in its building insulation (March 2002) — per JM.",
      "sources": [{ "url": "https://www.jm.com/en/homeowner-insulation/product-selector/fiberglass/" }, { "url": "https://www.jm.com/en/blog/2022/july/johns-manville-first-to-market-with-formaldehyde-free-insulation/" }] },
    { "id": "claim:width", "kind": "derived", "status": "verified", "lastVerified": "2026-07-15",
      "text": "Standard wood framing sets studs 16 or 24 inches on center. Batt widths follow: 15 and 15¼ inches for 16-inch framing, 23 inches for 24-inch — sized to sit snug in the cavity between studs, not across them. Width, not R-value, decides whether a batt fits the wall.",
      "sources": [{ "url": "https://insulationinstitute.org/wp-content/uploads/2016/01/BI473.pdf" }, { "url": "https://www.jm.com/en/blog/2019/october/the-amount-of-insulation-that-s-just-right/" }] },
    { "id": "claim:facing", "kind": "manufacturer_claim", "status": "verified", "lastVerified": "2026-07-15",
      "text": "Kraft paper is a vapor retarder. JM's installation instructions place it toward the living space — the warm-in-winter side — \"unless building codes specify otherwise.\" Unfaced batts go where no retarder is wanted: layered over existing attic insulation, or in interior sound walls.",
      "sources": [{ "url": "https://www.jm.com/en/homeowner-insulation/homeowner-faq/what-is-the-difference-between-unfaced-and-kraft-faced-/" }, { "url": "https://insulationinstitute.org/wp-content/uploads/2016/01/BI473.pdf" }] },
    { "id": "claim:safb", "kind": "manufacturer_claim", "status": "verified", "lastVerified": "2026-07-15",
      "text": "Mineral wool is stone made fiber — volcanic rock, melted and spun into inorganic strands. Per JM's SAFB documentation: noncombustible, melting point above 2,000°F, flame spread and smoke developed indexes of 0, and wall-assembly STC improvements of up to 10 dB.",
      "sources": [{ "url": "https://www.jm.com/en/insulation-systems/building-insulation/minwool-sound-attenuation-fire-batt-safb/" }] },
    { "id": "claim:foamboard", "kind": "manufacturer_claim", "status": "verified", "lastVerified": "2026-07-15",
      "text": "Rigid polyiso is the continuous-insulation family: closed-cell polyisocyanurate foam bonded to foil facers, made to sheathe framing in one unbroken thermal layer. The stocked AP Foil board is rated R-6.0 at one inch — and per JM's product copy, properly installed it also functions as a water-resistive, vapor, and air barrier.",
      "sources": [{ "url": "https://www.jm.com/en/insulation-systems/building-insulation/ap-foil-faced-foam-continuous-insulation/" }] },
    { "id": "claim:compress", "kind": "retailer_interpretation", "status": "verified", "lastVerified": "2026-07-15",
      "text": "The trapped air does the insulating — and DOE guidance is blunt: compressed insulation will not deliver its full rated R-value. NAIMA's industry chart puts an R-19 batt at about R-18 in a 5-1/2-inch cavity and R-14 in a 4-inch one. Buy the thickness the cavity actually takes.",
      "sources": [{ "url": "https://www.energystar.gov/sites/default/files/asset/document/Insulation%20Fact%20Sheet.pdf" }, { "url": "https://insulationinstitute.org/wp-content/uploads/2016/08/Compressed_R_values.pdf" }] },
    { "id": "claim:coverage", "kind": "derived", "status": "verified", "lastVerified": "2026-07-15",
      "text": "The bag is the unit — federal rule requires batt packages to state the square feet inside, and blown-in bags to chart coverage at standard R-values (16 CFR 460.12). One Attic Protector bag covers 109 sq ft at R-19; deeper targets take more bags, per the bag's chart.",
      "sources": [{ "url": "https://www.ecfr.gov/current/title-16/chapter-I/subchapter-D/part-460" }, { "url": "https://www.jm.com/content/dam/jm/global/en/building-insulation/Files/BI%20Data%20Sheets/Resi%20and%20Commercial/JM_BIC-262-Attic-Protector-Data-Sheet.pdf" }] },
    { "id": "claim:layering", "kind": "retailer_interpretation", "status": "verified", "lastVerified": "2026-07-15",
      "text": "Layering an attic: the second layer goes unfaced, run crosswise over the first, per standard industry guidance — facing buried mid-stack can trap moisture between layers.",
      "sources": [{ "url": "https://insulationinstitute.org/wp-content/uploads/2016/01/BI473.pdf" }, { "url": "https://www.jm.com/en/blog/2024/april/To-face-or-not-to-face-That-is-the-insulation-question/" }] },
    { "id": "claim:illustrative", "kind": "illustrative", "status": "verified", "lastVerified": "2026-07-15",
      "text": "The 3D room, wall geometry, and material renderings in this exhibit are illustrative reconstructions built to explain the assembly — not JM CAD, engineering drawings, or product photography.",
      "sources": [{ "url": "https://superarbor.io/pages/johns-manville" }] }
  ],

  "components": [
    { "id": "component:siding", "name": "The cladding", "installOrder": 6, "zone": "exterior face",
      "what": "The weather face — siding sheds rain and sun. Everything the buyer came for hides behind it.", "claimRefs": ["claim:illustrative"], "skus": [] },
    { "id": "component:foamboard", "name": "Continuous foam board", "installOrder": 5, "zone": "over the framing, outside",
      "what": "Rigid polyiso sheathes the frame in one unbroken thermal layer — R-6.0 at one inch on the stocked AP Foil board, and per JM's copy, properly installed it doubles as water-resistive, vapor, and air barrier.",
      "claimRefs": ["claim:foamboard"], "skus": [{ "title": "JM AP Foil R-6.0 Polyiso Board, 1 in × 4 ft × 8 ft", "price": 29.26, "url": "https://superarbor.io/products/johns-manville-ap-foil-r-6-0-1-in-x-4-ft-x-8-ft-polyisocyanurate-faced-board-insulation" }] },
    { "id": "component:sheathing", "name": "The sheathing", "installOrder": 4, "zone": "structural skin",
      "what": "The structural skin the assembly braces against. Not a JM line — but the plane the continuous insulation and the cavity insulation meet across.", "claimRefs": ["claim:illustrative"], "skus": [] },
    { "id": "component:studs", "name": "The framing — 16 inches on center", "installOrder": 3, "zone": "the skeleton",
      "what": "Studs at 16 or 24 inches on center set the whole insulation order: batt widths of 15–15¼ and 23 inches are sized to the cavity between studs, not the spacing itself. Measure the studs before you buy.",
      "claimRefs": ["claim:width"], "skus": [] },
    { "id": "component:batt", "name": "The batt in the bay", "installOrder": 2, "zone": "stud cavities",
      "what": "Spun glass trapping still air — the workhorse. Pre-cut to friction-fit the bay at full loft; compression costs R.",
      "claimRefs": ["claim:fiberglass", "claim:compress"],
      "skus": [{ "title": "JM R-13 Kraft-Faced Batt, 15¼ in × 93 in (108.33 sq ft bag)", "price": 85.05, "url": "https://superarbor.io/products/johns-manville-jm-r-13-kraft-faced-fiberglass-batt-insulation-15-1-4-in-x-93-in-108-33-sq-ft-bag" }, { "title": "JM R-21 Unfaced Batt, 15 in × 93 in", "price": 82.33, "url": "https://superarbor.io/products/johns-manville-r-21-unfaced-fiberglass-batt-wall-insulation-67-81-sq-ft-coverage-15-in-w-x-93-in-l-u1321s" }] },
    { "id": "component:facing", "name": "The kraft facing", "installOrder": 2, "zone": "warm-in-winter side of the batt",
      "what": "A paper vapor retarder. JM's instructions face it toward the living space — the warm-in-winter side — unless local code says otherwise. Never stack two faced layers.",
      "claimRefs": ["claim:facing"], "skus": [] },
    { "id": "component:mineralwool", "name": "The stone bay", "installOrder": 2, "zone": "sound and fire walls",
      "what": "One bay wears stone instead of glass: mineral wool, spun from volcanic rock — noncombustible, melting above 2,000°F, flame spread 0, and up to 10 dB of STC improvement, per JM's SAFB documentation.",
      "claimRefs": ["claim:safb"],
      "skus": [{ "title": "JM Mineral Wool SAFB, 2 in × 16 in × 48 in", "price": 54.62, "url": "https://superarbor.io/products/johns-manville-mineral-wool-sound-attenuation-fire-batt-safb-insulation-2-in-x-16-in-x-48-in-106-66-sq-ft-bag" }] },
    { "id": "component:drywall", "name": "The drywall", "installOrder": 1, "zone": "interior face",
      "what": "The room's face. Behind it, the whole assembly disappears — which is why the label, not the eye, has to carry the facts.", "claimRefs": ["claim:illustrative"], "skus": [] },
    { "id": "component:blownin", "name": "The attic blanket", "installOrder": 7, "zone": "attic floor",
      "what": "Blown-in loose fill covers the attic floor like snowfall. Coverage moves with depth: one Attic Protector bag covers 109 sq ft at R-19 — deeper targets take more bags, per the bag's chart.",
      "claimRefs": ["claim:coverage"],
      "skus": [{ "title": "JM Attic Protector R-19 Blown-In, 25.2-lb bag", "price": 59.94, "url": "https://superarbor.io/products/johns-manville-attic-protector-r-19-fiberglass-blown-in-insulation-sound-barrier-109-sq-ft-coverage-per-25-2-lb-bag" }] },
    { "id": "component:layering", "name": "The second layer rule", "installOrder": 7, "zone": "attic, over existing insulation",
      "what": "Adding to an attic: the second layer goes unfaced, run crosswise over the first — facing buried mid-stack can trap moisture.",
      "claimRefs": ["claim:layering"],
      "skus": [{ "title": "JM R-30 Attic Kraft-Faced Batt, 24 in × 48 in (88 sq ft)", "price": 111.96, "url": "https://superarbor.io/products/johns-manville-r-30-attic-kraft-faced-fiberglass-batt-insulation-88-sq-ft-coverage-24-in-w-x-48-in-l-k1243" }] },
    { "id": "component:rvalue", "name": "The number on the bag", "installOrder": 0, "zone": "every label",
      "what": "R means resistance to heat flow — the FTC's R-value Rule has required tested, uniform numbers since 1979. The higher the R-value, the greater the insulating power.",
      "claimRefs": ["claim:rvalue"], "skus": [] }
  ]
}