Totaco Ltd

B2B Sales Opportunities Across Construction, Engineering, Energy, Financial Services and IT markets

External Sales Manager/ Commercial Growth Leader – Flat Roofing – Windsor

Location: Windsor

Type: Permanent

Salary: £50,000 to 60,000 Per Year

Posted on: 10/08/2026

About the Client

  • Our Client is a specialist commercial flat roofing contractor with ambitious growth plans across the UK.
  • The business has invested significantly in strengthening its operational capabilities and is now focused on accelerating commercial growth.
  • They specialise in high-quality roofing refurbishment projects and premium technical solutions.
  • Rather than competing primarily on price, the business differentiates itself through quality, technical expertise, service, and long-term customer relationships.
  • This position offers the opportunity to work closely with senior leadership and play an influential role in the future commercial direction of the business.
  • There is a clear long-term progression opportunity toward a Commercial Director-level position for the right individual.

Roles/Responsibilities

  • Drive new business development across the commercial flat roofing and refurbishment market.
  • Identify, develop, and convert profitable opportunities with contractors, property owners, consultants, specifiers, and other key stakeholders.
  • Build and maintain long-term relationships from Site Manager through to Director level.
  • Manage commercial opportunities from initial enquiry through quotation, negotiation, project delivery, and completion.
  • Develop a strong pipeline of repeat and strategic business.
  • Work closely with the Commercial Director and wider leadership team to support the company’s growth strategy.
  • Identify target customers, projects, and market sectors offering strong commercial potential.
  • Maintain a disciplined and process-driven approach to sales activity, pipelines, forecasting, and follow-up.
  • Support the development of commercial proposals and negotiate agreements while protecting profitability.
  • Maintain a strong understanding of customer requirements, roofing systems, warranties, accreditations, and insurance requirements.
  • Work collaboratively with estimating, operations, and project teams to ensure opportunities are commercially viable and successfully delivered.
  • Represent the business professionally across customer meetings, site visits, networking opportunities, and industry events.
  • Contribute ideas and market insight that help shape the wider commercial strategy.
  • Take increasing ownership of commercial growth as the position develops.

Qualifications

  • Minimum of three years’ experience within commercial flat roofing, roofing systems, waterproofing, or a closely related sector.
  • Proven sales and business development experience within the commercial construction market.
  • Strong track record of identifying and winning new business.
  • Experience working with commercial roofing refurbishment projects.
  • Strong understanding of flat roofing systems, waterproofing, single ply, liquid applied systems, roofing membranes, insulation, or related building envelope products.
  • Ability to develop credible relationships with stakeholders ranging from site-based teams to senior directors.
  • Strong commercial awareness with a clear focus on profitable, sustainable growth.
  • Confident and credible when presenting technical and commercial solutions.
  • Strong negotiation and influencing skills.
  • Structured, organised, and process driven.
  • Good understanding of roofing warranties, industry accreditations, and insurance requirements.
  • Comfortable working autonomously and taking ownership of a geographical territory.
  • Ambition to progress into a senior commercial leadership position.

Benefits

  • Competitive salary of £50,000–£60,000.
  • Uncapped commission structure offering significant earning potential.
  • Company car or car allowance.
  • Additional company benefits.
  • Clear progression pathway toward a Commercial Director role.
  • High level of autonomy and ownership.
  • Opportunity to influence the commercial growth strategy of an ambitious specialist contractor.
  • Direct exposure to senior leadership and strategic decision-making.
  • Opportunity to develop a significant commercial presence across South Central England.
  • Join a business focused on premium solutions, quality delivery, and profitable long-term growth.

If you are an experienced commercial roofing sales professional looking for greater autonomy, stronger earning potential, and a genuine route into senior leadership, contact Gabriella Maartens directly at g.maartens@totaco.net or +44 77 2352 9627 for a confidential discussion.