VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Monday, December 29, 2025

Stock Comparison

James Hardie Industries plc vs Spirax Group plc

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

James Hardie Industries plc

JHX · ASX

Market cap (USD)
SectorMaterials
CountryIE
Data as of2025-12-28
Moat score
74/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into James Hardie Industries plc's moat claims, evidence, and risks.

View JHX analysis

Spirax Group plc

SPX · London Stock Exchange

Market cap (USD)$6.7B
SectorIndustrials
CountryGB
Data as of2025-12-28
Moat score
71/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Spirax Group plc's moat claims, evidence, and risks.

View SPX analysis

Comparison highlights

  • Moat score gap: James Hardie Industries plc leads (74 / 100 vs 71 / 100 for Spirax Group plc).
  • Segment focus: James Hardie Industries plc has 4 segments (64.2% in Siding & Trim); Spirax Group plc has 3 segments (52.1% in Steam Thermal Solutions).
  • Primary market structure: Quasi-Monopoly vs Oligopoly. Pricing power: Moderate vs Moderate.
  • Moat breadth: James Hardie Industries plc has 5 moat types across 2 domains; Spirax Group plc has 6 across 2.

Primary market context

James Hardie Industries plc

Siding & Trim

Market

North American fiber cement exterior siding & trim (plus related exterior products)

Geography

North America (primarily U.S. and Canada)

Customer

Homebuilders, contractors, remodelers, dealers/distributors, and retailers

Role

Manufacturer / branded building-products supplier

Revenue share

64.2%

Spirax Group plc

Steam Thermal Solutions

Market

Industrial and commercial steam systems (condensate management, controls, thermal energy management products and solutions)

Geography

Global

Customer

Industrial process operators and commercial facility operators

Role

OEM / solutions provider

Revenue share

52.1%

Side-by-side metrics

James Hardie Industries plc
Spirax Group plc
Ticker / Exchange
JHX - ASX
SPX - London Stock Exchange
Market cap (USD)
n/a
$6.7B
Sector
Materials
Industrials
HQ country
IE
GB
Primary segment
Siding & Trim
Steam Thermal Solutions
Market structure
Quasi-Monopoly
Oligopoly
Market share
88%-92% (estimated)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
74 / 100
71 / 100
Moat domains
Supply, Demand
Supply, Demand
Last update
2025-12-28
2025-12-28

Moat coverage

Shared moat types

Capex Knowhow ScaleBrand Trust

James Hardie Industries plc strengths

Long Term ContractsOperational ExcellenceDistribution Control

Spirax Group plc strengths

Service Field NetworkInstalled Base ConsumablesDesign In QualificationSuite Bundling

Segment mix

James Hardie Industries plc segments

Full profile >

Siding & Trim

Quasi-Monopoly

64.2%

Deck, Rail & Accessories

Oligopoly

11.7%

Australia & New Zealand

Oligopoly

11.6%

Europe

Competitive

12.5%

Spirax Group plc segments

Full profile >

Steam Thermal Solutions

Oligopoly

52.1%

Electric Thermal Solutions

Competitive

24.3%

Watson-Marlow Fluid Technology Solutions

Oligopoly

23.6%

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.