Self-supported chimney stack

Charming Stoves are proud to be the suppliers of the Poujoulat product within the Somerset Area Call : 01458 274 664

The STI Chimney Stack is an innovative evolution of the standard Therminox chimney termination using modern engineering design principles, combined with « a state of the art» manufacturing process. This innovative system optimise your working process, you can now install several chimneys through the roof in one day.

Available as standard in 2 finishes (Black & Copper Brown), our STI Chimney Stack is CE marked and designated as suitable for use with all gas, oil, pellet and wood burning appliances. Complete with a comprehensive range of standard accessories to suit all applications. It is ideally suited for operating temperature up to 450°C and comes with a 10 year Axa backed guarantee.

The STI Chimney Stack comes with our engineered Poujoulat flashing system, very easy to position in place of 4 or 6 tiles and delivers a perfect seal to the roof; self-levelling chimney can be installed on the roof first.

All of the products offered by Cheminées Poujoulat have been rigorously tested in every configuration by the CERIC Laboratory to ensure they meet highest standards (Building Regulation Document JAmendements to Approved Documents).

CE marking: 0071-CPD-0011

Designation: T450 N1 W V2 L50040 G50 – T250 N1 W V2 L500040 O20 – T200 P1 W V2 L50040 020 (with Joint Seals)

Please note that  discounts are available on any full system Call : 01458 274 664
(a full system needs to include a minimum of three lengths)

Please see the Poujoulat price guide 


  • Up to 3 metres freestanding with the use of reinforced Locking Band (2 metres as standard)
  • Recessed locking band.
  • Aesthetically pleasing look.
  • Quick and easy to install.
  • Customer satisfaction.
  • Easily meets regulation requirements.

Max. Temperature limitation:
– Soot fire tested at 1000°C
– Operating temperature 450°C
– 4 hours fire rated to BS 476-20


Insulation: High pressure injected mineral wool 30mm thick.



Technical features


STI G 960

STI G 1160

Back Height (H)

905 mm

1150 mm

Installed Lengths (L)

950 mm

1150 mm


270 mm

270 mm


Inner Ø (in mm)






Outer Ø (in mm)



30 mm

 Inner Ø (in mm)


Inner wall: AISI 316L stainless steel – Thickness: 0.4 mm
Outer wall: AISI 304 or equivalent – Thickness: 0.4 mm/strong>

Thermal Resistance (m2 K/W)