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Isoler Ltd.

Active, accounts up to date·subcontractor & consultant·Head office Durham

About from company website

Isoler is a UK-wide building integrity specialist with over 30 years of experience, delivering compliance-led solutions across fire safety, remediation, and specialist construction works. They support clients across the public sector and construction industry with a fully integrated, end-to-end approach to building safety and compliance. By combining consultancy, compliance, and delivery under one roof, Isoler aims to reduce risk, improve accountability, and simplify project delivery from inception to completion.

The company prioritises safety, quality, and compliance in all its operations. Their experienced teams work closely with clients to ensure projects are delivered safely, compliantly, and to the highest possible standards. Isoler offers a comprehensive range of services, including fire door installation and maintenance, fire stopping, and compartmentation, all backed by accreditations and a commitment to meeting evolving industry needs.

Services

Works as

Sectors

Project experience from company website

Genforce Remedials

Genforce Remedials

Maintenance on a total of 14,000 fire doors for Gentoo Group.

Client · Gentoo Group

Duresme Court

Durham

Remedial work within a block of 252 student flats, focusing on ensuring all entrance doors were brought up to the required standards and compliance with relevant regulations.

Client · We Are Homes For Students

Hedworth Court

Hedworth Court

Completion of works on a development for Gentoo Group and Equans, including installed pressurised air shaft, fire-stopping various penetrations, suspended ceilings, and partition walls for 76 properties.

Client · Equans

RVI & Freeman Hospitals

Newcastle

Involvement in all aspects of fire compartmentation works within live hospital environments, operating from 2017 to 2024.

Client · Laing O Rourke

Accreditations from company website

  • BM Trada
  • FIRAS

Clients mentioned from company website

Gentoo Group, We Are Homes For Students, Equans, Laing O Rourke.

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Questions about Isoler Ltd. from the record on this page

What does Isoler Ltd. do?

Leading fire protection and building integrity specialists in Durham, offering compliance-led solutions across fire safety, remediation, and specialist construction works throughout the UK. Their listed services include Fire protection and Refurbishment.

Where is Isoler Ltd. based?

Isoler Ltd. is registered at Unit 1 Belmont Industrial Estate, Durham, DH1 1TN, in North East.

What areas does Isoler Ltd. cover?

Isoler Ltd. states that it works across Nationwide.

How many people work at Isoler Ltd.?

Accounts filed for the year to 2025 report 78 employees, which places the company in the 50-249 employees band.

What is Isoler Ltd.'s turnover?

Isoler Ltd. does not disclose turnover: UK small-company accounts are not required to. Based on headcount and trade debtors in its filed accounts, turnover is likely to fall between £6.8m and £18.0m. This is an estimate, not a filed figure.

Is Isoler Ltd. still trading?

Companies House lists Isoler Ltd. as active, with accounts most recently made up to 2025-03-31.

What accreditations does Isoler Ltd. hold?

Isoler Ltd. displays BM Trada and FIRAS on its website.

What sectors does Isoler Ltd. work in?

Isoler Ltd. works in Residential, Commercial, Public, Healthcare and Education.

When was Isoler Ltd. established?

Isoler Ltd. was incorporated on 1992-11-23.

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