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  • Log Burner Installation

    GTD Installations Ltd
    HETAS registered since 2012

Opus Melody Freestanding Stove suitable for twin wall installation


Thorma Zaragoza Woodburning stove

Most popular stove for twin wall
Opus Melody
To install a log burner in a room without an existing fireplace, you need

Twin walled rigid pipe

Next most popular

Ashworth 5

Double walled and insulated rigid pipe







What is Twin Wall?


Twin walled pipe has an outside wall made of stainless steel and a layer of insulation between it and the inside wall. This protects your hands and property from heat radiation and thus can be used externally and internally, in houses, summer houses, boats, garden cabins, man-caves and glamping pods. It is also known as a rigid pipe system or an external factory made system.

How long will a twin wall installation take?

Once the design is completed by your HETAS engineer the works usually take place over two visits. Sometimes the design needs to be amended during installation, hence splitting over two days, in case extra or alternative parts are needed. This also helps if there is bad weather.

There will be some disruption whilst we are working, as we need to core a hole through your exterior wall for the pipe to go through, but mostly we will be working outside on ladders constructing your new flue.

Do I need a log-store?

We usually recommend free-standing stoves with log stores as without a fireplace or surround there is no natural place to store your wood once the fire is lit. This also raises the stove and makes it easier to access.

Planning Permission

All twin wall systems need planning permission from your local building authority or fitting by a HETAS installer, even in your shed!

 We are an experienced twin wall installer and always use a stainless steel system over the cheaper galvanised steel as research and experience has shown it to be more durable at high temperatures and less susceptible to corrosion and rust. It is available in silver or black.

Twin Wall Gallery (Internal)


Take a look at the wood stoves that we have installed that did not have chimneys.
No chimney? No problem!

Ashworth 5kW MF Stove from Oakleaf

Ashworth


Fuel : Multifuel Stove
Flue : Black Twin Wall
Hearth : Glass Quarter Circle

Oakleaf Stoves


Stovax View with steel bench with twin wall installation

Stovax View 5T


Fuel : Wood only
Flue : Black Twin Wall Pipe
Hearth : Honed Granite
Steel Bench Log Store


Visit Stovax.com





Stoavx View Woodburner with rigid pipe system

Stovax View 5


Fuel : Woodburner
Flue : Black Rigid Pipe System
Hearth : Tiles
With log store


Discontinued






Mendip Woodland with brick chamber

Mendip Woodland


Fuel : Wood and coal
Flue : Black and Silver Twin Wall
Hearth : Brick Original
Firebox: Brick + 1 rendered

Ready to have fake chimney breast fitted.
For more info see other services


Visit Mendip.co.uk


Charnwood Aire Stove with rigid twin wall installation

Charnwood Aire 5


Fuel : Dedicated Woodburner
Flue : Black Rigid Pipe
Hearth : Tiles
Supplied with own log store



Online Brochure

Zaragoza Log burning stove from THORMA

Thorma Zaragoza


Fuel :  Wood Logs Only

Flue : Black Rigid Twin Wall

Hearth :  Toughened Glass

log store underneath



Online Brochure

"Gareth and the team have always been great for us. They installed this beautiful log burner. Transformed our room. Excellent service - totally recommend for this and for all chimney related maintenance"

- Claire [ Knebworth, Hertfordshire ]

"From start to finish the whole process was managed very well and the two gentlemen who completed the work and installation were very friendly and completed my installation to a high standard, cleaning up thoroughly after each visit."


- Rosemary [ near Bedford, Beds ]

Twin Wall Gallery (External)


This is the view from outside, to give you an idea of how your installation might look.

For tips on how to get the best use out of your log burner and how to light it

see Woodburner Tips

Stove installed with twin wall flue pipe

Steel Twin Wall

 304/316 Rigid Pipe Stainless Steel System on chalet style bungalow


Silver twin wall installation

Silver Rigid Pipe

 Straight 304/316 flue with brackets from ground floor to roof


Tall steel rigid flue pipe fitted to stove

Rigid Flue System

 304/316 Factory made rigid flue pipe installed on first floor of building.


Black powder coated flue

Rigid Flue System

304/316 Factory made rigid pipe in black from ground floor. Note that black is more expensive than silver.

Steel twin wall installed

Silver Twin Wall


 304/316 Stainless Double Walled Steel Pipe from the ground floor to the roof.


Black twin wall system

6 inch Twin Wall


304 / 316 Factory made flue system, powder coated in black


Special Spring / Summer Offer!

Free-standing stoves with Twin Wall Installations
Ashworth 5 Freestanding Multifuel Stove
4.5 metres of black twin wall
Installation and Certification

£3250

Special offer on freestanding stove and twin wall installation



Contact us for a free Site Survey 


The communication on the run up to installation was excellent and all our queries were dealt with promptly and professionally. The installation process was painless and done in a COVID sensitive manner....... 
......Gareth was excellent and provided plenty of helpful tips on how to set everything up. We even got a fuel discount voucher which was a pleasant surprise, a really nice company to do business with.  - Keith [ Clifton near Shefford, Beds ]

GTD Installations Ltd

Trading since 2014 All copyright 2016 onwards

Contact Us

  • 7 Paynes Park HITCHIN [this is not a showroom]
  • 01462 431910
  • office@gtdinstallations.ltd.uk
2026 Company Inc. All rights reserved.
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  • Home
  • New Installations
    • What's involved?
    • Choosing A WoodBurner
    • Free Standing Stoves
    • Double Sided Stoves
    • Inset & Cassette Stoves
    • Twin Wall Installation
    • Greener Choices
  • Existing Owners
    • Log burner Tips
    • Log burner Problems
    • Logburner Manuals
    • Logs and Coal Suppliers
    • Guide Gallery
  • Other Services
    • Fireplace Services
    • Chimney Services
    • Garden Services
  • Contact