ARMSTRONG WORLD INDUSTRIES, INC. (AWI): what the price requires
At today's price, ARMSTRONG WORLD INDUSTRIES, INC. (AWI) is priced for +10.2% growth. boothcheck doesn't publish a fair value or a price target; it shows what the price assumes, so you can judge whether that bar is too high.
Generated: 2026-07-14 · Exported: 2026-07-16 · Source: https://boothcheck.com/report/AWI
Headline
| Field | Value |
|---|---|
| Ticker | AWI |
| Company | ARMSTRONG WORLD INDUSTRIES, INC. |
| Current price | $155.01/sh |
| Composition | Mineral Fiber 64% / Architectural Specialties 36% |
What The Price Requires (Inversion)
The assumption today's price embeds, recovered by inverting the valuation.
| Field | Value |
|---|---|
| Inversion basis | whole-company |
| Operating margin needed | 7.5% |
| Operating margin today | 26.4% |
| Margin compression implied | -18.9pp |
| Implied growth | 10.2% |
| Multiple paid | 18x operating income |
The operating-margin requirement is derived from the framework's value band at year 12, a separately labeled basis from the headline growth/duration solve.
Solve inputs: computed at a 8.9% cost of capital with 4% terminal growth over a 5-year stage; each 1pp of cost of capital moves the implied operating-profit growth ~6.6pp.
How unusual the bet is: within-range
| Reference | Value |
|---|---|
| vs own history | +0.21σ |
| cohort percentile (of 76 peers) | 49 |
| sustained it ~5 years at this level | 60% |
| implied end-window share | 0% |
Valuation X-Ray
Asset, earnings-power and peer-multiple models all land far below the price; ONLY the growth-DCF reaches it. The bet is durable compounding the static frames structurally cannot price (a moat/durability premium).
How the valuation models price the stock relative to the market price. Price/FV above 1.0 means the market pays more than that lens defends (expensive); at or below 1.0 the lens can defend the price.
| Family | Median price/FV | Models | Reads |
|---|---|---|---|
| Asset | 2.02x | 5 | expensive |
| Earnings | 2.71x | 5 | expensive |
| Relative | 1.33x | 5 | expensive |
| Growth | 1.16x | 3 | expensive |
Families that justify the price: Growth Families that call it expensive: Asset, Earnings
The models below discount at their own flat-beta convention rates (cost of equity 9.3%, WACC 8.7%); the inversion above states its own rate.
Per-Model Detail (n=18)
| Model | Family | FV | Price/FV | Applicable | Methodology |
|---|---|---|---|---|---|
| DCF Perpetual Growth | Growth | $133.20 | 1.16x | yes | FCF base $0.3B, growth 10% (input: historical growth), terminal g 4.0%, WACC 8.6%, 6yr projection |
| DCF Exit Multiple | Growth | $163.80 | 0.95x | yes | Exit EV/EBITDA: 13.7x / 15.7x / 17.7x (bear / base = today's held flat / bull), 6yr |
| Relative Valuation | Relative | $128.16 | 1.21x | yes | P/E 18x (static sector reference · 2026-04), scenarios: 14.9x / 18.0x / 21.1x (bear / base = reference held flat / bull), EV/EBITDA 12x |
| Simple DDM | Growth | — | — | no | — |
| Two-Stage DDM | Growth | — | — | no | — |
| Simple Excess Return | Asset | $76.68 | 2.02x | yes | BV/sh $20.67, ROE (TTM) 34.3%, ke 9.3% |
| Two-Stage Excess Return | Asset | $156.92 | 0.99x | yes | 5yr excess ROE then converge to ke=9.3% |
| Discounted Future Market Cap | Growth | $131.63 | 1.18x | yes | Rev $1.6B, growth 10% (input: historical growth; tapered), Terminal P/S: 3.4x / 4.1x / 4.8x (bear / base = today's held flat / bull, cap 8x) |
| Peter Lynch Fair Value | Relative | $92.24 | 1.68x | yes | EPS $7.05, growth 13% (input: historical EPS growth), PEG=1.67 (Overvalued) |
| Margin Trajectory | Growth | — | — | no | — |
| Earnings Power Value | Earnings | $57.19 | 2.71x | yes | Normalized EBIT (5y avg op income, one-time charges added back) $0.34B × (1−24%) / WACC 8.6% → EPV (no growth) |
| Residual Income | Asset | $119.17 | 1.30x | yes | BV $20.67 + 5yr PV of (ROE (TTM) 34.3% − Kₑ 9.3%) × BV; BV grows 8.8%/yr |
| Graham Number | Asset | $57.26 | 2.71x | yes | √(22.5 × EPS $7.05 × BVPS $20.67) — Graham's conservative floor |
| EV/EBITDA Relative | Relative | $116.28 | 1.33x | yes | EBITDA $0.46B × sector EV/EBITDA 12.0x |
| FCF Yield | Earnings | $49.24 | 3.15x | yes | FCF $238.6M / Kₑ 9.3% — zero-growth perpetuity |
| SBC-Adj FCF Yield | Earnings | $43.94 | 3.53x | yes | SBC-adj FCF $0.22B (FCF $0.24B − SBC $0.02B) capitalized at Kₑ |
| Ben Graham Formula | Earnings | $204.84 | 0.76x | yes | EPS $7.05 × (8.5 + 2×13.1%) × (4.4 / 5.3%) |
| ROIC-Justified P/B | Asset | $12.65 | 12.25x | yes | BV $20.67 × (ROIC 5.3% / WACC 8.6%) |
| P/Sales Sector | Relative | $95.37 | 1.63x | yes | Revenue $1.65B × sector P/S 2.5x |
| PEG Fair Value | Relative | $138.36 | 1.12x | yes | EPS $7.05 × (PEG 1.5 × growth 13.1% (input: historical EPS growth)) → PE 19.6x |
| Earnings Yield | Earnings | $76.22 | 2.03x | yes | EPS $7.05 / required return 9.3% (Rf 4.3% + ERP 5.0%) |
| Funds From Operations Multiple | Relative | — | — | no | — |
| Clinical Phase NPV | Growth | — | — | no | — |
| Merton | Asset | — | — | no | — |
| V5 Mechanical | — | — | — | no | — |
Solvency
| Field | Value |
|---|---|
| Net debt | $436.5m |
| Net debt / NOPAT (after-tax) | 1.33x |
| Net debt / operating income (pre-tax) | 1.01x |
| Interest coverage | 13.3x |
| Share count CAGR (buyback) | -2.2% |
| Burning cash | no |
Bullet Takeaways
At $157.79 the price pays about 18x company-wide operating income, implying roughly 11.4% operating growth a year for five years. Only the growth DCF reaches the price; asset, earnings-power, and peer-multiple frames all say richly valued, the signature of a durability premium.
Armstrong is a high-margin ceilings franchise, with current operating margin near 26% and trailing ROE around 34% on a thin book. Those returns are why the static valuation floors understate it: the value sits in pricing power and share, not in book assets.
Q1 2026 grew net sales 7.1% to $409.9 million, with Architectural Specialties up 11.0% and Mineral Fiber up 4.9%. Management reaffirmed full-year sales and EBITDA guidance and raised adjusted EPS growth guidance to 10% to 14% on accelerated buybacks.
Bull Case
Start with where the price sits against the methods, because the gap is the whole question. At $157.79 only the growth DCF clears the quote, a perpetual-growth DCF near $133 and a DCF exit-multiple near $166, while the relative P/E mark lands near $128 and the asset and earnings frames sit lower. That pattern, every static method below the price and a forward-growth model carrying it, is exactly what a high-quality compounder looks like when book value and trailing averages cannot capture its economics.
The economics justify the read. Armstrong runs a current operating margin near 26% and a trailing ROE around 34% on a book value of roughly $20 a share, the kind of return profile that comes from a dominant position in commercial ceiling systems where Armstrong sets pricing rather than takes it. The FY2025 10-K notes Architectural Specialties products are sold primarily to direct customers, mainly ceiling-systems contractors, the channel that lets the company capture spec-driven, design-led demand at premium prices. Mineral Fiber, the larger and even higher-margin segment, compounds average unit value through price and mix year after year.
The Q1 2026 results show both engines working. Net sales rose 7.1% to $409.9 million, with Architectural Specialties up 11.0% and Mineral Fiber up 4.9%, net earnings of $66.8 million, and adjusted EBITDA of $130 million. Management reaffirmed full-year sales, EBITDA, and free-cash-flow guidance and raised adjusted EPS growth guidance to 10% to 14% on accelerated share repurchases, with margin expansion expected in both segments and above-market volume gains from growth initiatives. The implied 11.4% operating growth bar is one this franchise has recently delivered, so the price is paying for continuation of a proven compounding engine, not a speculative inflection.
Bear Case
The qualitative problem comes first: Armstrong sells into commercial construction and renovation, and that demand is cyclical, tied to office, retail, and institutional building activity that softens when rates stay high and corporate capital budgets tighten. The current operating margin near 26% reflects a strong point in that cycle, and the price assumes the company compounds operating income at roughly 11.4% a year for five years from that elevated base. A franchise this good still cannot outrun a downturn in nonresidential construction, and the bull framing leans on continuation as if the cycle does not exist.
Only then do the numbers confirm it. At $157.79 (June 27, 2026) every static valuation frame sits below the price. The earnings-power value mark lands near $57 on normalized EBIT, the FCF-yield mark near $49 on a zero-growth perpetuity, the Graham number near $57, and ROIC-justified book value near $13 because accounting ROIC sits around 5.3% against an 8.7% WACC. The relative P/E mark near $128 is the closest static method and still short. When the conservative frames cluster between $50 and $130 against a $158 quote, the premium is entirely a bet on durable above-market growth, and the disconnect between price and the static floors is the warning, not the multiple itself.
The quarter carried its own caution flags. Adjusted EBITDA was pressured by short-term headwinds in Architectural Specialties, including a non-recurring tariff adjustment and continued growth investment, and the segment that grew fastest is also the one absorbing margin pressure. The EPS growth guidance increase to 10% to 14% leans on accelerated share repurchases rather than purely on operating gains, which flatters per-share figures without changing the underlying return on capital. Net debt near $437 million is modest at about 1.0x operating income, so leverage is not the risk here. The risk is cyclicality meeting a high starting multiple: if nonresidential construction slows, the 26% margin and the 11% growth assumption both come under pressure at once, and the conservative valuation frames are where the price would re-rate toward.
Valuation
Inverting the $157.79 price gives the anchor. At that level the market pays about 18x company-wide operating income, which under an 8.7% cost of capital and 4% terminal growth implies operating growth of roughly 11.4% a year for five years. Each one-point change in the cost of capital moves the implied growth by about 6.6 points. Against Armstrong's own record that pace is within what it has recently delivered, so the priced-in assumption reads as within range. The reverse-DCF range runs from a low near $124 to a base near $176.
The model X-ray shows the durability-premium split. Only the growth frames reach the price: a DCF exit-multiple near $166 and a perpetual-growth DCF near $133. The asset and earnings frames are lower: earnings power value near $57, FCF yield near $49, Graham number near $57, and ROIC-justified book near $13. The two-stage excess-return mark near $157 is the exception that nearly meets the price, reflecting the high near-term ROE before it converges to the cost of equity.
The spread is the information. The price is not a verdict on whether Armstrong is a good business, the margins and returns say it is excellent. It is a measure of how much continued above-market compounding the market has booked, from an operating margin near the top of its own cycle.
Catalysts
The near-term driver is the 2026 earnings trajectory against raised guidance. Q1 2026 net sales rose 7.1% to $409.9 million, and management reaffirmed full-year sales, EBITDA, and free-cash-flow guidance while raising adjusted EPS growth guidance to 10% to 14% on accelerated share repurchases. Whether Mineral Fiber average unit value and Architectural Specialties volumes sustain that path is the swing factor.
Segment margin recovery is the structural catalyst. Architectural Specialties grew 11.0% but absorbed short-term margin headwinds, including a non-recurring tariff adjustment and growth investment, while Mineral Fiber grew 4.9% at high margin. Management expects margin expansion in both segments for the full year, so the pace of that recovery in Architectural Specialties is the watch item.
The broader driver is nonresidential construction and renovation demand. Watch commercial building activity, order intake (which management called strong), the cadence of share repurchases supporting EPS growth, and any tariff or input-cost developments affecting Architectural Specialties.
Sources: StockTitan and Grafa (AWI Q1 2026 results, 7.1% sales growth, $409.9M revenue, segment growth), GuruFocus (Q1 2026 EPS detail), Yahoo Finance earnings call (reaffirmed guidance, raised EPS growth to 10% to 14%, tariff adjustment and growth-investment headwinds in Architectural Specialties).
Peer Cohorts (Per Segment, With Filing Citations)
Mineral Fiber (reported)
- OC (Owens Corning)
- (no filing in the citation store)
- FBIN (Fortune Brands Innovations, Inc.)
- (no filing in the citation store)
- BLD (TopBuild Corp)
- (no filing in the citation store)
- MAS (Masco Corporation)
- (no filing in the citation store)
Architectural Specialties (reported)
- OC (Owens Corning)
- (no filing in the citation store)
- AYI (ACUITY INC.)
- (no filing in the citation store)
- FBIN (Fortune Brands Innovations, Inc.)
- (no filing in the citation store)
Methodology Note
- Priced-in inversion: the valuation is inverted on the current price to recover the operating-income growth, duration, and steady-state margin the price embeds (ROE for financials, FFO growth for REITs).
- Valuation x-ray: the valuation models, grouped into four families (asset, earnings, relative, growth). Each model is expressed as a price/FV ratio (distance from price), not a point fair-value estimate. The spread across families is the disagreement.
- Solvency: net cash/debt, net-debt-to-NOPAT, interest coverage, and share-count CAGR from EDGAR financials (net debt / FFO and fixed-charge coverage for REITs; regulatory-capital framing for financials).
- Peer cohorts: per-segment comparables with deep-linkable SEC filing citations.
Fundamentals sourced from SEC EDGAR filings. Current price from Databento. The priced-in inversion and valuation x-ray are computed by the boothcheck engine; narrative composed by AI from the structured data.