Grün Engineering
Two insulated stainless steel stacks on a flat roof, with the horizontal flue runs and support plates
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Flagship project Cremator flues GE4171

Thorncliffe Crematorium

New cremator flues on a frame made off site and lifted onto the roof, insulated and clad to keep the outside cool.

Site
Thorncliffe Crematorium
Town
Barrow-in-Furness, North West
Sector
Crematorium
Status
Complete

Key facts

cremator flue stacks
2
flanged flue sections, 10 mm flanges
4 mm
wire-backed insulation, aluminium clad
200 mm
mm weathering plates at the roof
1100 x 1100
main install, 21 to 23 September 2026
3 days

The challenge

The crematorium needed its cremator flues replaced, from the plant room up through the roof.

The stacks needed support at roof level without new structural penetrations.

The flues run hot. The quote set a target of under 70°C on the outside surface.

What we did

We designed the flues and support frames and issued drawings for approval before anything was made.

The frame is 2 inch box section, made off site and lowered into position by crane under a lifting plan, on feet that sit on the roof.

Each flue is double wrapped in 200 mm of wire-backed insulation, banded in stainless steel and clad in aluminium.

Weathering plates 1100 x 1100 mm seal each stack where it leaves the roof.

The result

The main install took three days in September 2026, with the last joints lagged and wrapped on day three.

We came back in October to strip and replace the insulation and cladding on both plant room flues, clad round the support plates and finish the roof weathering.

We also fitted a new plate over an existing roof plate that was leaking. The works were signed off complete on 22 October 2026.

On site.

8 photographs. Tap a photo to see it larger.

Thorncliffe Crematorium, Barrow-in-Furness. Two stacks on support plates, with the horizontal runs feeding in.
Thorncliffe Crematorium, Barrow-in-Furness. Roof route with the elbow and stacks beside the old brick chimney.
Thorncliffe Crematorium, Barrow-in-Furness. Finished stack with its weathering plate.
Thorncliffe Crematorium, Barrow-in-Furness. Terminal, collar and plate at the roof.
Thorncliffe Crematorium, Barrow-in-Furness. Weathering plate and collar.
Thorncliffe Crematorium, Barrow-in-Furness. Insulated and clad flue connections in the plant room.
Thorncliffe Crematorium, Barrow-in-Furness. New cladding round the support plate, with the test point.
Thorncliffe Crematorium, Barrow-in-Furness. New plate fitted over the old, leaking roof plate.

The drawing.

Issued for approval.

Design drawing of two roof stacks with braced support frames, in 3D, elevation and plan views
Flue and support frame design, drawing 0000-002 revision 1, 9 July 2026. Issued for approval.

Finishing details

The details we leave behind.

  • Clad support plate and test point

    Clad round the supports

    Insulation and aluminium cladding carried round each support plate for a neat finish.

  • Weathering plate and collar

    Weathering at the roof

    1100 x 1100 mm weathering plates with collars where the stacks leave the roof.

  • New roof plate over an old one

    Leaking plate sorted

    A new plate sealed over an existing roof plate that was letting water in.

  • Stacks on their support frame

    No new roof penetrations

    The frame stands on feet that sit on the roof.

Handover

What the client got.

The documents on record for this job. Handover documents normally go into the customer's project folder before the engineers get home.

  • Design drawings for approvalDrawing 0000-002 revision 1, 9 July 2026
  • Installation RAMS and lifting plan
  • Progress reportsWith photos, September and October 2026
  • Progress and completion reportReport 006, 22 October 2026
  • O&M informationFor our works, on completion

Related services

Industrial chimneys and stacks Process exhaust Steelwork and supports Design and calculations

Short job records: GE4171.

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