Terminology & Gobbledygook
Terminology & Gobbledygook
5 mins

Terminology & Gobbledygook

Fireproof board:

A1 rated (usually 10-20mm thick) for lining fireplace recesses or sealing off bottom of chimney when fitting a chimney liner (see closure register plate).

Available builder's merchants or specialist stove stores. Example is Hardiebacker see here:

 http://www.stovefittersmanual.co.uk/wp-content/uploads/2017/07/hardiebacker-multifuel-leaflet.pdf


Chimney liner
:

A stainless steel tube, slides down a brick/stone chimney to provide a smooth and safe route for smoke.
https://www.stovefitterswarehouse.co.uk/products/duraflue-316-904-grade-chimney-flue-liner
See also "Fitting Pack". If no chimney then see here: https://www.stovefitterswarehouse.co.uk/products/chimney-design-to-building-regulations


Closure register plate
:

Seals off bottom of chimney above stove.


Collar
: The place on the stove where the first section of chimney pipe inserts.


Cowl
: Sits on top of chimney pot and stops rain/birds getting into chimney.


DEFRA
: Department of Environment, Farming and Rural Affairs (UK). DEFRA approves stoves for use in Smoke Control Areas (heavily populated areas usually) as these stoves cannot be turned down so low as to slumber which causes black smoke.


Ecodesign:
 From January 1st all stoves sold in the UK must be one of the latest Ecodesign models. These have all been tested to emit very low levels of pollution and particles.


Eco ready
: From January 1st all stoves sold in the UK must be one of the latest Ecodesign models. These have all been tested to emit very low levels of pollution and particles.


Eco
: From January 1st all stoves sold in the UK must be one of the latest Ecodesign models. These have all been tested to emit very low levels of pollution and particles.


SIA
: Stove Industry Alliance - group of manufacturers who work together to promoted wood stoves.


Firebox
: The inside of the stove where the fuel sits. The bigger this is the more fuel and therefore the more heat.
https://www.stovefitterswarehouse.co.uk/pages/what-size-wood-burning-stove-for-my-room


Fitting pack
: Purchased with stove and chimney liner (stove+liner+fitting pack and off you go!). Includes all you need from stove to cowl and we can choose the correct pack for you depending on your liner and stove. Fitting Pack does not include chimney plate or CO detector - these items can be purchased separately or are often available as a free gift with our stoves. Use our SEARCH button, top right of website to search for "fitting pack" for more detailed info. See infographic here: https://www.stovefitterswarehouse.co.uk/pages/choosing-your-fitting-pack


Flue
: If a polo mint is the chimney, the flue is the hole.


Hardiebacker board:
 (usually 10-20mm thick) for lining fireplace recesses or sealing off bottom of chimney. Available builder's merchants or specialist stove stores. Example is Hardiebacker see here: http://www.stovefittersmanual.co.uk/wp-content/uploads/2017/07/hardiebacker-multifuel-leaflet.pdf
Lining a fireplace: https://www.stovefitterswarehouse.co.uk/pages/lining-a-fireplace


Hearth
: The area underneath the stove.
https://www.stovefitterswarehouse.co.uk/pages/hearth-regulations


kW
: Kilowatts per hour. A measurement of heat emitted. 5kW accounts for 80%+ of all stove sales. See also "Firebox". See also https://www.stovefitterswarehouse.co.uk/pages/what-size-wood-burning-stove-for-my-room


Liner
: See Chimney liner.


Log store
: An area under a stove for storage of logs. May be a separate part (can be retrofitted) or may be part of the actual stove design (cannot be retrofitted).


Max. output
: Stovefitter's deduction of maximum output using a reasonably full fuel load.
https://www.stovefitterswarehouse.co.uk/pages/what-size-wood-burning-stove-for-my-room


Multi-fuel
: Can burn wood, smokeless fuel or coal.


Multifuel
: Can burn wood, smokeless fuel or coal.


MF
: Multifuel. Can burn wood, smokeless fuel or coal.


Nominal
: "about" or "approx."


Register plate:
 Seals off bottom of chimney above stove when a chimney liner is not being fitted. Must be metal. Usually installers will recommend installing a liner. If a liner is fitted this plate is then known as a closure register plate.


Renewable energy
: is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat


SE
: Smoke exempt - can be used in a Smoke Control Area.


Smoke Control Area
: A smoke control area is a legally defined area where only approved solid fuels or DEFRA exempted appliances (eg wood burning stoves approved by DEFRA) can be used within buildings.


Twin wall:
 Twin wall flue is a clip-together chimney system. No adhesives or sealing potions at joints - slide one part into another and add a locking band.


Twinwall:
 Twin wall flue is a clip-together chimney system. No adhesives or sealing potions at joints - slide one part into another and add a locking band.


Vitreous:
 single thickness metal about 1-2mm thick. Can be used in a room but cannot pass through walls (unless into a proper chimney) or floors or be used outside. Usually just a metre or so on top of the stove before changing to a chimney liner in a brick or stone chimney or insulated twin-wall flue if the chimney is a more modern, clip-together system know as thin wall..


Wood burning stove
: Can burn only wood. Some wood burning stoves can be retrofitted with a multifuel-kit (usually just a grate that is fitted into the bottom of the stove, a five-minute task).

FAQs

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Costs correct as of April 2023:

Approx. costs if you have a chimney and fireplace ready to use: £750-£1,000 (save £500 by self-installing).

Approx. costs if you have a chimney but need the fireplace "opening up": £1,600-£2,200 (save £1200 by self-installing).

Approx. costs if you do not have a chimney and need a clip-together flue: Shed £475-£700. Bungalow £1500. 2-storey house £2500. Save £1,000-£1400 by self-installing.

Above figures include labour and materials but no appliance.

We, of course, advise you to purchase your stove and materials from Stovefitter's to ensure quality goods are installed (some installers use budget materials to increase margin). If you buy your stove from us (rather than your local small shop or installer) we have a lot more power when approaching manufacturer's with a warranty issue. Why is that? Because we buy many hundreds of stoves a year from these brands.

We do not fit stoves.

But we know a few who do!

Google: Hetas installers

Hetas are the trade body of registered UK installers.

Most installations will require that you slide a chimney liner down your chimney (flexible metal tube 5" or 6" in diameter). Do you have a narrow chimney and want to lessen the risk that a liner might not go down your chimney? Then make sure your chosen stove can use a 5" liner.

Must I line my chimney? Best read this article but most likely the answer is yes. Do I have to fit a chimney liner?

DEFRA-Exempt wood burning stoves with a 5″ collar can usually be fitted to a five inch liner rather than the usual 6″ minimum, making the installer's job much less stressful.

ALL OF THE 5KW STOVES WE SELL CAN BE FITTED TO A 5" CHIMNEY LINER.

I seriously suggest any self installer fits a 5" liner unless they know their chimney is large enough for a 6"!

What is the best chimney liner? Silvacore 904 (we sell it so of course we will say that ;-). What is the best chimney liner?

Will your stove require an air vent within the room (some stone walls are very difficult to drill)?

5kW or under and wood burning stoves often do not require an air vent (new builds always require an air vent).

What is the maximum output in kW of your "5kW" wood burning stove? The majority of manufacturers just specify the “nominal output” and this figure means very little in real life. The nominal is a figure the manufacturer chooses to sell the stove at - the stove is capable of reaching at least this output with one fuel load. Nominal means "capable of". But it is not the maximum.

Check out the size of the area where the logs will go (firebox size) as this varies enormously. The kW output is completely dependant on the amount of logs burning at any one time - more logs burning equals more heat. If you can fit three logs in stove A and just two logs in stove B then stove A will be capable of throwing out 33% more heat.

DO NOT TRUST MANUFACTURERS’ kW RATINGS as manufacturers specify what output they desire to sell the stove at and testing allows for much “playing with the figures”. This is why you can get very small 5kW stoves (e.g. Aga Little Wenlock) and very large 5kW stoves (e.g. DG Ivar 5 by Dik Geurts which is actually rated 5kW but has a MUCH larger firebox than the Ekol Crystal 5 by Ekol Stoves). A Crystal 5k might get to 5kW and not be capable of any higher whilst a DG Ivar, despite being rated at 5kW, can get to 8kW with a full fuel load.

Note that, over time, one might damage the internal firebricks of a stove by running at a higher load than the manufacturer's suggest. Firebricks are easily replaceable.

Will your wood burning stove fit in your recess WITH the required air gaps around it? This is obviously not an issue if your stove will be freestanding.

Air gaps to non-combustible materials (brick, stone etc.) are usually "as close as you like" legally but manufacturers will sometimes specify a recommendation. This recommendation is there to allow heat to escape from the recess into the room - so you get the heat benefit rather than the heat soaking into the building structure and being lost. If no gap to non-combustibles recommended then we suggest 50-100mm air gap left and right of stove, 50mm behind and 100mm above.

Are you in a Smoke Control Area (usually built up areas)?

Choose your stove accordingly.

A stove must be DEFRA-Approved if you wish to burn wood in a smoke control area.

ALL OF THE STOVES WE SELL ARE DEFRA APPROVED FOR SMOKE CONTROL AREAS.

In simple terms if a stove has an efficiency rating of 70% then 30% of the heat from your logs goes up the chimney.

If a stove has an efficiency rating of 90% then only 10% goes up the chimney.

So think of this in terms of how many logs you have to chop/buy.

Example: A Saltfire Peanut 5 by Saltfire Stoves in Dorset has an efficiciency of 80%.

A tall chimney (6m or more) that is lined will be happy with an efficient stove.

Efficiency importance can be said to be overrated and anything between 75% and 85% is fine. Go much higher and performance can actually suffer (smoke in room when opening door to reload, blackening of glass).

Many modern stoves can go on 12mm thick hearths. Others require full, 5″ thick constructional hearths. All of the stoves we sell state whether or not a 12mm hearth is suitable.More about hearths for wood stoves here.

Can you can talk to somebody on the phone should you need to after the wood burning stove has been delivered, especially if you are self installing? Will the staff at “wesellzillionsofstoves.com” be able to assist with any installation issues? What if there are any problems after install?

Do yourself a favour before ordering stoves or materials on the Internet: Go to Trustpilot and type in the company name before you buy. Some companies advertising at the top of search engines are not good news - check for yourself.

When striving to find thebest 5kW wood burning stovesyou will likely be bewildered by the choice. There are many to choose from. The question I get asked most in our shop is “why should I pay <£1,000> for this one when this other one is just <£500>?”. Here is the very simple answer:the cheaper wood stoves are made in Chinaor Eastern Europe whilst the more expensive are made in Western Europe (or sometimes the USA). Here are a few examples where a more expensive stove might excel over a cheaper stove:

  • Aesthetics (more time spent on design)
  • Hinges (sometimes hidden on more expensive stoves)
  • Better quality glass
  • Thicker steel (longer life)
  • Improved door locking mechanisms
  • Longer warranty
  • Improved controllabilty of flame due to more resource invested on design of air flow within stove
  • Brushed steel fittings instead of cheapy chrome look

Open and close the door on a cheap Chinese stove. Then open and close the door on a DG stoveArada stovesWoodford stovesHamlet stoves or Saltfire stoves. You’ll understand the difference.

Stove pricing reminds me of wine pricing. A £20 bottle of wine is not double the quality of a £10 bottle of wine (the drinking experience might be improved by 20% as an example). We are talking “the law of diminishing returns here. They are all “fire in a metal box” at the end of the day.

Yes. However, there are specific regulations and restrictions in place to address air pollution concerns, particularly in areas designated as Smoke Control Areas. In these areas, only approved "smokeless" fuels or exempt appliances, such as Defra-approved wood-burning stoves, can be used. These stoves are designed to burn wood more efficiently and produce fewer emissions.

All the stoves we sell are DEFRA approved and Eco-design approved and suitable for all areas of the UK.

Terminology

View all Terminology

A stainless steel tube, slides down a brick/stone chimney to provide a smooth and safe route for smoke.

All of our stoves are approved by DEFRA to burn wood in all UK locations including Smoke Control Areas (towns and cities). Not all stoves are, so be careful if buying elsewhere.

All of our stoves are ECODESIGN approved to be sold in the UK. Not all stoves are, so be careful if buying elsewhere. ECODESIGN is mandatory by law since January 2022.

The base your stove sits on.

If the chimney is the polo mint then the flue is the hole.