Skip to main content
Posted 20 July, 2026

Mechanical Estimator Thermal Insulation

On-Site Recruitment Limited
Chelmsford, ENG, GB Full Time

Job Description

Mechanical Estimator (Thermal Insulation)

\n

Location: Brentwood

\n

Job Type: Full-Time, Permanent (Monday-Friday)

\n

Salary: £40,000-£50,000 DOE + Benefits

\n

About the Company

\n

Our client is a growing thermal insulation contractor with over 30 years of industry experience, delivering high-quality insulation solutions across commercial, industrial and energy sectors. Due to continued growth and a strong order book, they are looking to appoint an experienced Mechanical Estimator.

\n

The Role

\n

We are seeking a Mechanical Estimator with proven thermal insulation experience to manage projects from quantity take-off through to final quotation and tender submission. Working closely with suppliers, subcontractors, and clients, you will prepare accurate, competitive tenders and play a key role in securing new business.

\n

Key Responsibilities

\n
    \n
  • Review drawings, specifications and tender documents.
  • \n
  • Complete detailed quantity take-offs for pipework, ductwork, vessels and tanks.
  • \n
  • Prepare labour, material and subcontractor cost estimates.
  • \n
  • Use mechanical estimating software to produce estimates and quotations.
  • \n
  • Obtain and assess supplier and subcontractor pricing.
  • \n
  • Prepare tender submissions and commercial cost breakdowns.
  • \n
  • Identify risks, opportunities and value-engineering solutions.
  • \n
  • Attend site surveys and pre-tender meetings where required.
  • \n
  • Support negotiations and project handover following contract award.
  • \n
\n

Requirements

\n
    \n
  • Proven experience as a Mechanical Estimator preferably within the thermal insulation industry.
  • \n
  • Experience managing projects from take-off to final quotation.
  • \n
  • Experience with in Ensign software or similar.
  • \n
  • Strong understanding of insulation systems, materials and specifications.
  • \n
  • Ability to interpret technical drawings and project documentation.
  • \n
  • Excellent commercial, numerical and communication skills.
  • \n
  • Strong Microsoft Excel skills.
  • \n
\n

What's on Offer?

\n
    \n
  • Competitive salary and benefits package.
  • \n
  • Opportunity to join a well-established business with over 30 years of success.
  • \n
  • Long-term career progression.
  • \n
  • Diverse and high-profile projects.
  • \n
  • Supportive team environment and ongoing development.
  • \n
\n
\n

JBRP1_UKTJ