JHX Down 6.6% YTD, REH 32.4% Off Lows: Two ASX Value Plays

James Hardie Industries (ASX: JHX) opened the year down 6.6% from the start of 2025. Reece Ltd (ASX: REH), meanwhile, sits 32.4% above its 52-week low. The two building-materials names are drifting into value territory. Whether the price action signals a genuine discount or a prelude to further downside depends on the commodity inputs that drive their bills of materials.

Commodity Inputs and the Housing Cycle

Both stocks depend on a construction cycle that is itself hostage to raw-material costs. James Hardie’s fiber-cement siding consumes cement, sand, and energy. Cement prices in Australia have been sticky because of carbon-adjusted production costs and transport bottlenecks. Natural gas, a key input for drying and curing processes, remains tied to LNG netback pricing. A sustained move above $4 per gigajoule at the Wallumbilla hub would squeeze margins before any volume recovery arrives.

Reece faces a different input chain. Copper pipe and brass fittings track the LME copper price, which the market repriced in late 2025 after a series of supply disruptions in Chile. Steel conduit and galvanized fittings move with hot-rolled coil benchmarks out of Asia. The 32.4% rally off the 52-week low partly reflects a view that housing renovation demand is resilient. That view holds only if the RBA’s easing cycle translates into actual project starts rather than a pause in mortgage stress.

Valuation Divergence and the 2026 Correction Risk

Neither stock looks statistically cheap on a trailing earnings basis. James Hardie still trades above the mid-cycle multiple that industrial investors typically assign when housing starts are falling. Reece’s premium to the ASX 200 reflects its distribution moat, not its commodity sensitivity. The setup resembles the valuation divergence AlphaScala outlined for Pro Medicus and James Hardie earlier this year, where stretched multiples met a slowing macro backdrop. A repeat of that modest correction would take JHX back toward the $48 level that bulls abandoned in January.

AlphaScala’s quantitative scoring engine currently lists JHX as Unscored. That means the stock has not yet triggered enough of the momentum, quality, or value signals that the system requires to generate a proprietary rating. The fundamental work therefore falls squarely on investors, and the immediate fundamental is whether input costs are falling faster than end-market prices.

The Decision Point for JHX and Reece

The next Australian building approvals release will either confirm a recent softening in detached house permits or deliver a surprise. A downward print raises the bar for James Hardie’s volume assumptions, particularly in the renovations and alterations segment that Reece also feeds. On the input side, a break below $3.80 per gigajoule for domestic gas would draw a line under one margin headwind. Conversely, any fresh disruption to South American copper supply would push Reece’s cost of goods sold in the wrong direction.

Both names now offer a potential entry point. The entry is only attractive if the commodity-cost tailwinds that the market is beginning to price actually materialize. Without them, the value signal is just a cheaper trap.