Accreditations, insurance and how we check our work

The schemes we're audited by, the training our engineers hold, and the checks every job goes through before we hand it over.

Accreditations

Checked by three schemes

Constructionline Gold certificate of membership for Grün Engineering Limited, registration number 1400487, issued 20 January 2026

Constructionline Gold

A UK register that checks a contractor's company, health and safety and other policies, so buyers don't have to run their own pre-qualification.

Registration number
1400487
Issued
20 January 2026
Valid to
20 January 2027
SafeContractor certificate of approval for Grün Engineering Limited, certificate number NR5256, valid until 12 February 2027

SafeContractor (SSIP)

A health and safety accreditation. It's part of SSIP, so other SSIP schemes and the buyers who use them recognise it.

Work category: industrial chimney and furnace services, including chimney lining systems. Awarded through the SSIP deem-to-satisfy route, based on our Once For All assessment.

Certificate number
NR5256
Valid to
12 February 2027
Once For All Health and Safety SSIP certificate for Grün Engineering Limited, registration number 1400487, valid until 20 January 2027

Once For All (SSIP)

A health and safety assessment that meets the SSIP core criteria. Buyers who accept SSIP schemes recognise it.

Certificate number
1400487
Valid to
20 January 2027

Insurance

Our cover

  • [Employer's liability: to confirm]
  • [Public liability: to confirm]
  • [Professional indemnity: to confirm]

Training

Matched to the role and the site

Each engineer holds the training their role and site need.

  • CSCS
  • IPAF
  • PASMA
  • SSSTS
  • Asbestos awareness
  • DBS checks for sites that need them

Quality

How we check our work

  1. 01Supervisor inspection

    A supervisor inspects every project as part of our snagging and passing-off procedure.

  2. 02Testing

    Testing agreed for the project, with a test report and a certificate of conformity where applicable.

  3. 03Daily photo reports

    A photo report from site every day, so you can see progress.

  4. 04Handover pack

    Completion report with photos, test reports and the O&M pack, normally in your project folder before the engineers get home.

Smoke test running through a flue to check the joints

Warranty

12 months on our workmanship

Plus the manufacturer's warranty on the materials.

12

months, workmanship

Manufacturer's

warranty, materials

Send drawings. Get a price.

Send the drawings or an outline of the job. A price normally comes back within 24 hours.