Glazing & Fenestration Estimator – Essex

Cornerstone Project Source; Harlow; On-site; GBP 40,000 - 65,000; Full time

Job summary

Cornerstone Project Source Ltd in Essex is seeking a Permanent Estimator to prepare detailed quotations for subcontract glazing packages, including aluminium and steel windows, doors, curtain walling, and rooflights. The role suits an experienced estimator or ambitious junior aiming to build a long-term career in fenestration, with immediate start and structured training.

You will liaise with clients and suppliers, interpret drawings, and contribute to value engineering on high-value projects up

Qualifications

• Experience estimating subcontract glazing or related construction sectors.
• Strong knowledge of glazing systems and tendering processes.
• Ability to interpret drawings and NBS specifications.

Responsibilities

• Prepare detailed quotations for subcontract glazing packages, including aluminium and steel windows, doors, curtain walling, rooflights and balustrades.
• Interpret architectural drawings, specifications and tender documents to assess project requirements and scope.
• Compile pricing from suppliers and subcontractors for materials, labour and subcontracted works.
• Liaise with clients, main contractors and internal teams to clarify requirements and provide accurate proposals.
• Evaluate project installation timescales and include durations and resources in quotations.
• Maintain clear records of estimates, pricing and supporting documents in internal systems.
• Collaborate with sales and project delivery to ensure smooth tender to delivery transition.
• Contribute to value engineering to deliver competitive, cost-effective solutions.
• Attend project sites and meetings as required.

Skills

Estimating experience

Client liaison

Tools

Microsoft Excel

Job description

Cornerstone Project Source Ltd in Essex is seeking a Permanent Estimator to prepare detailed quotations for subcontract glazing packages, including aluminium and steel windows, doors, curtain walling, and rooflights. The role suits an experienced estimator or ambitious junior aiming to build a long-term career in fenestration, with immediate start and structured training.

You will liaise with clients and suppliers, interpret drawings, and contribute to value engineering on high-value projects up