Alumasc Group PlcLSE: ALU

Full year Results for the year ended 30 June 2026 Presentation

· Issued by Alumasc Group Plc
Annual Results to 30 June 2026

Resilient performance, positive start to FY27

Vijay Thakrar, Interim Executive Chair Simon Dray, Chief Financial Officer

Contents

Introducing Alumasc

01

FY26 Highlights & Overview

02

Financial Review

03

Business Review

04

Strategic Delivery

05

Outlook

06

Appendices

07

2

Alumasc Roofing - Derbigum Mineral & Alumasc BluRoof - Lightbody Street, Liverpool



Introducing Alumasc Vijay Thakrar, Interim Executive Chair

Alumasc Water Management Solutions Rainscreen Cladding System





Who We Are: Our Divisions

Building Envelope

Products:

  • Rainwater management (metal gutters/downpipes)

  • Architectural aluminium

  • Building and surface water drainage

  • Access covers

Climate change resilience through water and stormwater management in the built environment

Water Management

Building decarbonisation through products focused on improving air-tightness and managing ventilation

Housebuilding Products

Building Products for a Sustainable Future

Products:

  • Broad range of products used in housebuilding, from ground level to roof ridge

Building decarbonisation/greening/ climate resilience through premium weatherproofing/insulation solutions, including blue, green and bio-solar roofs and carbon-absorbing membranes

Products:

  • Modular flat and flat-to-pitched roofs

  • Roof safety products

  • Blue roofs

  • Green roofs

  • Bio-solar roofs

The Alumasc Group plc 4



Sustainability driving further growth

Market Leadership: sustainable solutions for the built environment, focused on

  • Reducing carbon footprint

  • Efficient management of rain and storm water

  • Providing biodiverse green spaces

    >80% of products aligned with strategic growth markets High quality, durable products

  • Lower maintenance

  • Longer lifespan

  • Reduced whole-life cost

    Resource and energy efficient materials

  • 39% recycled at point of use

  • 84% fully recyclable at end of life

    Helping customers deliver on their sustainability objectives

  • 34% of revenue covered by EPDs

    Long-Term Sustainability Growth Drivers

    Building Decarbonisation

    Climate Resilience

    Urban Biodiversity/ Occupant Wellbeing



    The Alumasc Group plc 5

    FY26 Highlights & Overview Vijay Thakrar, Interim Executive Chair

    Alumasc Water Management Solutions Gatic UltraSlot and Gatic Access Covers Moin Container Terminal, Costa Rica



    FY26 highlights Resilient performance against a challenging market backdrop

    Revenue £107.1m (FY25: £113.4m)

    • Housebuilding Products: standout performance; revenue +16% vs FY25

    • Building Envelope resilient: revenue level with record FY25

    • Water Management: 4% down vs FY25 excluding CLK Airport project revenues; 16% decline including CLK

      Underlying PBT* £10.0m (FY25: £14.2m)

      Operating cash conversion >100%, despite incremental short-term working capital investment Pension fund surplus increased to £5.9m (June 25: £4.8m)

      Bank facilities renewed to 2029 (extendable to 2031)
    • Facility increased by £5m to £30m; £20m accordion

    • Borrowing costs reduced by 20bps

      Proposed final dividend 7.6p (FY25: 7.6p) per share, full year dividend maintained at 11.1p

      The Alumasc Group plc

      * A reconciliation of underlying to statutory profit measures is shown in the appendix 7

      FY26 highlights Delivery of strategic priorities driving continued market outperformance Continued execution of strategic and commercial priorities
      • Management action underway in Water Management division to grow volume and margin

      • Investment to increase capacity and capability in Housebuilding Products

      • Acquisition pipeline continues to be developed; disciplined approach

        Leadership changes
      • Pamela Bingham's appointment terminated on 28 August 2026, after independent investigation

      • Vijay Thakrar appointed Interim Executive Chair, supported by experienced Executive and management teams

        Confident outlook for FY27
      • June 2026 order book 49% ahead of prior year

      • 5% year-on-year revenue growth in first two months of FY27, order intake remains strong

      • First deliveries to Changi Airport project later in H1 FY27

        The Alumasc Group plc 8

        Strong and experienced Executive Team

        Vijay Thakrar

        Interim Executive Chair (joined 2019)

        Reorganised to provide continuity and

        leadership

        Simon Dray

        Chief Financial Officer (joined 2021)

        • Vijay Thakrar: assuming executive responsibility as Interim Executive Chair

          Gilbert Jackson Director/DMD (joined 2011)

          Michael Leaf Director/DMD (joined 2011)

        • Gilbert Jackson: DMD Building Envelope, also assuming responsibility for Water Management: Covers & Drainage

          Alumasc Roofing

          Building Envelope

          Covers & Rainwater

          Drainage Products

          (Gatic/Wade) (AWMS/ARP/ Rainclear)

          Water Management

          Timloc

          Housebuilding Products

        • Michael Leaf: DMD Housebuilding Products, also assuming responsibility for Water Management: Rainwater Products

          Water Management team strengthened by recent MD hires:

        • Covers & Drainage (joined Dec 2025)

        • Rainwater Products (joined Sep 2026)

      The Alumasc Group plc 9

      Navigating a challenging UK construction market Construction markets subdued
  • 2026 forecast general market decline of 3.3%*

    • Geopolitical/macroeconomic uncertainty

    • Affordability concerns

    • Private housing starts fell by 12% in 2026*

      Stability and affordability key to recovery Alumasc's structural growth drivers remain strong
  • Future Homes Standard 2025

  • Biodiversity net gain 2024

  • Building Efficiency Standards

  • SuDS requirements

  • TCFD and Climate Risk Disclosure

  • AMP8 Water Investment cycle 2025-2028

  • Social and Affordable Homes Programme 2026-2036

    UK construction output growth

    CPA Summer 2026 forecast, all work

    4.0%

    2.0%

    0.0%

    -2.0%

    -4.0%

    2024A 2025A 2026E 2027F 2028P

    UK private housing starts

    CPA Summer 2026 forecast

    20.0%

    0.0%

    -20.0%

    -40.0%

    2024A 2025A 2026E 2027F 2028P

    The Alumasc Group plc

    *CPA Summer 2026 forecast 10

    Financial Review Simon Dray, Chief Financial Officer

    Income statement summary Year ended 30 June 2026

    FY26

    £m

    FY25

    £m

    Change

    %

    Revenue

    107.1

    113.4

    (5.6)%

    Revenue £107m (FY25: £113m)

    • 6% decline; broadly flat excluding CLK contribution

      Gross profit

      39.0

      43.0

      Gross profit margin %

      36.4%

      37.9%

      Sales, general & administration overheads

      (27.8)

      (27.4)

      Underlying operating profit*

      11.2

      15.6

      (27.9)%

      Underlying operating margin %

      10.5%

      13.7%

      Net finance costs

      (1.2)

      (1.4)

      Underlying PBT*

      10.0

      14.2

      (29.6)%

      Underlying tax charge

      (2.6)

      (3.4)

      Underlying PAT*

      7.4

      10.8

      Non-underlying items (after tax)

      (0.1)

      (1.5)

      PAT

      7.3

      9.3

      Underlying EPS (p)

      20.5p

      29.9p

      (31.4)%

      Basic EPS (p)

      20.3p

      25.9p

      (21.6)%

      Dividend per share (p)

      11.1p

      11.1p

      -%

      • UK revenue down 2%

      • Overseas revenue excluding CLK 36% ahead (including CLK, down 32%

        Gross margin 36.4% (FY25: 37.9%)

    • Driven by lower volumes and mix

      Underlying operating margin 10.5% (FY25: 13.7%)

    • Impact of operational gearing and mix

      Non-underlying costs £0.1m (FY25: £1.5m) after tax Full year dividend per share 11.1p (FY25: 11.1p)

    • Covered 1.9x by underlying earnings

    • Profit recovery to restore cover to 2.5-3.0x range

The Alumasc Group plc

*A reconciliation of underlying to statutory profit measures is shown in the appendix 12

Income statement bridge Year ended 30 June 2026

Cost increases mitigated by sales price

Volume decline £8.1m (CLK £6.8m); 44% drop-through to profit

Adverse mix impact partially mitigated by cost efficiencies



The Alumasc Group plc

*A reconciliation of underlying to statutory profit measures is shown in the appendix 13

Cashflow statement summary

FY26

£m

FY25

£m

Change

£m

EBITDA from continuing operations*

15.9

19.7

(3.8)

Year ended 30 June 2026

Operating cash conversion** 103% (FY25: 106%)

  • £3.6m outflow into working capital

    Change in working capital

    (3.6)

    (1.9)

    (1.7)

    Pension deficit funding

    (0.8)

    (1.2)

    0.4

    Cash generated by underlying operating activities

    11.5

    16.6

    (5.1)

    Cash conversion

    103%

    106%

    Capital expenditure

    (2.6)

    (2.6)

    -

    Interest

    (1.2)

    (1.3)

    0.1

    Tax

    (2.5)

    (2.6)

    0.1

    Lease principal repaid

    (1.8)

    (1.6)

    (0.2)

    Non-underlying/other cash flows

    (0.1)

    (1.9)

    1.8

    Free cash flow

    3.3

    6.6

    (3.3)

    Acquisition of businesses

    -

    (0.7)

    0.7

    Purchase of own shares

    (0.4)

    (0.5)

    0.1

    Dividends

    (4.0)

    (3.9)

    (0.1)

    Movement in net bank debt

    (1.1)

    1.5

    (2.6)

    Net bank debt at year end

    (6.9)

    (5.8)

    Average trade working capital % sales

    19.2%

    15.7%

    • Inventory investment to mitigate Middle East conflict-related issues

    • Average trade working capital 19.2% (FY25: 15.7%) of revenue

  • Pension deficit funding of £0.8m (FY25: £1.2m)

    Continuing to invest for future growth

  • Capital expenditure £2.6m (FY25: £2.6m)

    • Manufacturing capacity/NPD at sites in Goole (Housebuilding Products) and Halstead (Water Management)

Net bank debt £6.9m (FY25: £5.8m)

* EBITDA: Underlying operating profit before share-based payment charges, interest tax, depreciation and amortisation

** Cash conversion: cash generated by underlying operating activities as a percentage of underlying operating profit

The Alumasc Group plc 14

Balance sheet summary at 30 June 2026

* Underlying post-tax operating profit divided by average capital invested for the previous 12 months

Returns continuing to generate shareholder value

FY26

£m

FY25

£m

Change

£m

Property, plant & equipment

23.3

22.6

0.7

Intangible assets

18.1

18.7

(0.6)

Working capital

17.6

13.8

3.8

Other net liabilities

(5.2)

(5.0)

(0.2)

Capital invested

53.8

50.1

3.7

Net debt bank

(6.9)

(5.8)

(1.1)

Net debt lease

(7.6)

(6.9)

(0.7)

Pension obligations (net of tax)

4.4

3.6

0.8

Net assets

43.7

41.0

2.7

ROI - continuing operations (post tax)*

16.0%

24.3%

  • ROI 16% vs WACC c.13%

    Significant capacity for investment

  • June 2026 EBITDA leverage 0.5x (June 25: 0.35x)

    Bank facility renewed on 1 September 2026

  • Initial 3-year term to August 2029, extendable to August 2031

  • Committed facility increased by £5m to £30m

  • Uncommitted £20m accordion facility

  • Borrowing margin reduced by 20bps

    Continued pension de-risking

  • £5.9m pre-tax IAS 19 surplus (FY25: £4.8m)

  • Contributions reduced to £0.7m from September 2025

  • Further de-risking actions will be taken when appropriate

    The Alumasc Group plc 15

    Business Review Simon Dray, Chief Financial Officer

    Alumasc Roofing

    Derbigum - Grove Wood Primary School, Essex



    Water Management

    Continuing operations

    FY26

    FY25

    Revenue (£m)

    46.6

    55.5

    Underlying* operating profit (£m)

    3.3

    8.0

    Underlying* operating margin (%)

    7.0%

    14.5%

    Operating profit (£m)

    2.5

    6.1

    Disappointing performance in challenging market conditions

    • Revenue declined £8.9m

      • £6.8m lower revenue from CLK Airport project

      • UK revenues declined 6%, partially offset by non-CLK export growth Margins impacted by lower volumes

        Actions underway to improve operational efficiency and customer service

      • £1.3m of annualised cost reductions in year (c.£0.9m benefit in FY27)

      • Enquiry-to-order & lead time optimisation

      • Supply chain rationalisation

      • Optimised manufacturing across Rainwater Goods sites Strong and growing order book and pipeline

    • August 2026 divisional order book 68% higher than August 2025

    • First call-offs received from significant Changi Airport project

      The Alumasc Group plc *A reconciliation of underlying to statutory profit measures is shown in the appendix

      Alumasc Water Management Solutions Gatic Ultraslot and Gatic Access Covers

      DP World London Gateway Berth 4 Expansion

      17



      Building Envelope

      Continuing operations

      FY26

      FY25

      Revenue (£m)

      41.8

      41.8

      Underlying* operating profit (£m)

      4.9

      5.3

      Underlying* operating margin (%)

      11.6%

      12.7%

      Operating profit (£m)

      4.9

      5.3

      Resilient performance

    • Navigated supply chain and project demand volatility well

    • Revenues level with record FY25

    • Margins lower on investment in product certifications and support Strategic focus

    • Strong customer relationships founded on excellent technical sales and customer support

    • Increasing focus on enhanced sustainable roofing systems

      • Carbon-absorbing membranes

      • Bio-Solar systems

      • Improved insulation

      • Fire safety and protection

    • High end specification work with low-carbon systems

    • Excellent customer service and warranties

    • August 2026 divisional order book 39% higher than August 2025

      The Alumasc Group plc

      *A reconciliation of underlying to statutory profit measures is shown in the appendix

      Alumasc Roofing

      18

      Derbigum High Performance Waterproofing Membrane Princess of Wales Hospital, Bridgend



      Housebuilding Products

      Continuing operations

      FY26

      FY25

      Revenue (£m)

      18.7

      16.1

      Underlying* operating profit (£m)

      4.7

      4.2

      Underlying* operating margin (%)

      25.1%

      26.0%

      Operating profit (£m)

      4.7

      4.2

      Standout performance despite low housebuilder volumes

    • Revenue +16%, underlying operating profit +12%

    • Customer service a key driver of market share gains

      Operating margin at 25%

    • Continued efficiency and cost control

    • Small adverse product mix variance

      Continued investment and focus on sustainability

    • Two additional IM machines to further improve capacity, efficiency, agility

    • First carbon neutral building products manufacturer

      Well placed to benefit from recovery in housebuilding volumes

      The Alumasc Group plc *A reconciliation of underlying to statutory profit measures is shown in the appendix

      Housebuilding Products

      Loftite | Hinged Drop Down Loft Door

      19



      Strategic Delivery Vijay Thakrar, Interim Executive Chair Simon Dray, Chief Financial Officer

      Alumasc Water Management Solutions Gatic UltraSlot

      Bogotá El Dorado International Airport Columbia



      Strategic Pillars


      Championing Sustainable Building Products



      Accelerating Organic Sales Growth



      Driving Margin Improvement



      Value-Accretive Investment

      • Align portfolio with strategic growth markets

      • Resource-efficient manufacturing

      • Targeted product development

      • Sustainability commitment recognised by LSE Green Economy Mark

      • Outperform general UK construction sector

      • Growing demand for products that improve energy efficiency and climate resilience

      • Supportive legislation

      • Trusted brands and premium products

      • Market-leading customer service and support

      • Target growth in niche international markets

      • Operating margin target 15-20%

      • Continued focus on efficiency improvements

      • Process automation

      • Capability and capacity

      • Site consolidation

      • Technology investment

      • Customer service and commercial decision-making supported by better data

      • Realise acquisition synergies

      • Investment supported by cash generation and strong balance sheet

      • Strong cashflows through effective working capital management

      • Significant headroom

      • Capital and revenue investment to enhance future growth

      • Selective bolt-on acquisitions to accelerate ambitions

      The Alumasc Group plc 21



      Championing Sustainable Building Products Product

      >80% of portfolio aligned with strategic growth markets

      • Building decarbonisation (construction and in use)

      • Water management

      • Occupant wellbeing/urban biodiversity

        EPD coverage at 34% of Group revenue

        Planet

        Cost- and resource-efficient

      • Durable and low maintenance

      • 39% recycled

      • 84% recyclable

        Scope 3 GHG emissions calculated

      • Scope 1 & 2 GHG emission intensity: 16.76t CO2e/£m revenue

      • Total value chain GHG emission intensity: 644t CO2e/£m revenue

      • Raw materials and transport/freight and logistics main sources

      • Science-based targets in place, SBTi accreditation in progress

        GHG emission intensity

        tCO2e, scope 1, 2 and business travel/£m revenue

        70

        60

        50

        40

        30

        20

        10

        0

        FY18 FY19 FY20 FY21 FY22 FY23 FY24 FY25 FY26

        The Alumasc Group plc 22

        Growing Revenues: Strong order book Strong order book evidencing latent demand
    • June 2026 49% higher vs June 2025

    • CLK Airport project reaching conclusion

    • Changi Airport project

      • £2m order won December 25

      • First call-offs expected in H1 FY27

        Order book

        At 30 June

        10.5

        6.9

        9.0

        7.7

        8.3

        8.3

        1.3

        2.1

        2.7

        £m

        12.8

        Momentum continued into FY27
    • August 2026 order book 56% higher vs August 2025

      • Encouraging call-off rate

      • Revenue to date 5% higher year-on year

        2022 2023 2024 2025 2026

        CLK Other

        Order book movement

        30 June to 31 August 2026

        18.6

        £m

        15.5 15.6

        (18.5)

        30 June 2026 New orders received Orders shipped 31 August 2026

        Order book: order confirmation received/contract signed, awaiting call-off

        Figures relate solely to Water Management and Building Envelope divisions

        The Alumasc Group plc 23



        Growing Revenues: £136m opportunity pipeline

        UK

        £97m

        Robust pipeline of opportunities

  • >75% specification-backed

  • UK supported by Government spend

    • Defence

    • Health

    • Education

    • Prisons

    • Energy generation/data centres

    • Transport infrastructure

  • Local technical sales resource building export pipeline

    • CLK airport project concluding, further opportunities at Changi

    • Good growth outside of regions of traditional strength

      Americas

      £3m

      Europe

      £4m

      Africa

      £5m

      Middle E/ India

      £4m

      Asia

      £23m

      Opportunity pipeline: identified projects in order-to-place, or in/awaiting tender process

      Figures relate solely to Water Management and Building Envelope divisions

      The Alumasc Group plc 24

      Margin Improvement

      Margin dilution in FY26



    • £1.8m of price rises to pass through cost increases

    • £8.1m volume decline (£6.8m due to CLK project), at a contribution margin of 44%

    • £0.6m profit drag from mix, net of cost reductions

      Improvement expected in FY27

    • Centred on Water Management division

      • Volume recovery

      • Efficiency measures taken over H2 FY26

      • Supply chain rationalisation

      • Encouraging early signs

        Medium term 15-20% target range reaffirmed

        The Alumasc Group plc

        *A reconciliation of underlying to statutory profit measures is shown in the appendix 25

        Strategic Delivery Value-Enhancing Investment

        Organic

    • Further targeted investment to support future growth

      • Further overseas technical sales resource added in late FY26

      • £2.6m of capital expenditure

        • 2 new injection moulding machines at Housebuilding Products

          • Additional capacity and manufacturing agility

          • Support further new product development

        • Further CNC machining centre at Water Management (Halstead)

          • Reduce manufacturing costs, increase capacity in drainage range

          • Support further new product development

            Inorganic

    • Continuing to review acquisition opportunities

    • Disciplined approach - ability to add value paramount:

      • Complementary products/customers/services

      • Alignment with structural growth drivers

      • Available synergies

Significant headroom to accelerate strategic delivery

The Alumasc Group plc

Alumasc Water Management Solutions Canopy Superstore

26



Outlook Vijay Thakrar, Interim Executive Chair

Aluminium Roofline Products

Cambridge Investment Partnership - Cromwell Road Trueline Bespoke Aluminium Angled Windows



Outlook
  • Positive start to FY27, despite continued challenging market

    • Revenue in first two months 5% higher year-on-year

    • Order intake remained strong, with August 2026 order book 56% higher than August 2025

    • First deliveries to Changi Airport project expected in H1 FY27

  • Board confident of margin improvement

    • Benefit of Water Management restructuring and operational improvements underway

  • Long term structural growth drivers remain

    • Supportive environmental and building safety regulations

    • Undersupply of new houses/age of UK building stock/Government spending commitments

    • Capacity and capabilities in place to exploit demand recovery and export opportunities

  • Stability/continuity in leadership team

  • Well positioned to generate further growth in shareholder value

The Alumasc Group plc 28

Thank youwww.alumasc.co.uk

Alumasc Water Management Solutions Rainscreen Cladding - City North Hotel



Appendices

Alumasc Roofing Hydrotech MM6125

Willohaus, a 100-apartment Passivhaus Development, Salford



Non-underlying items

The Alumasc Group plc

31



Year ended 30 June 2026

FY26

FY25

Operating

Profit

Operating

Profit

Profit

Before Tax

Profit

Before Tax

£m

£m

£m

£m

Underlying profit from continuing operations 11.2

10.0

15.6

14.2

Acquired intangible asset amortisation (0.4)

(0.4)

(0.4)

(0.4)

Restructuring and other non-recurring costs (0.4)

(0.4)

(1.5)

(1.5)

Profit on disposal of property 0.4

0.4

-

-

Acquisition expenses (0.1)

(0.1)

(0.1)

(0.1)

Net IAS 19 defined benefit pension scheme income

0.2

0.1

Statutory profit from continuing operations 10.7

9.7

13.6

12.3



Diversified end markets

% of Group revenue

% of Group profit

Private vs Public

Housebuilding vs Non-residential vs

Commercial/infrastructure

RMI vs New build

Water Management

Building Envelope

Housebuilding Products

Group

>80% revenue derived from environmental products

>80% revenue supported by legislation/regulations

The Alumasc Group plc Allocation is based on FY26 results: data estimated/illustrative 32

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