❖ DON'T HAVE A CHIMNEY? ❖
A SOLUTION FOR MODERN HOMES
A traditional fireplace in the past was very much the focal point of a lounge however now, in more modern times, with modern and technologically advanced heating systems becoming ever more popular, house builders are constructing homes without chimneys in order to save time & money. This, we feel, is very unfortunate since it eliminates the most important piece of a house, the part that makes it a home. But all is not lost. Options are available to have a chimney.
NO CHIMNEY? NO PROBLEM!
With the advancement of factory-made twin-walled insulated flue pipe that is now available in many colours, the level of flexibility is now present with regards to having a stove installed - in a modern home, an extension (single storey or a double) or even in a conservatory. Stoves can now be installed into the corners of a room, as well as, in most areas of the home providing regulations can be met.
An insulated flue system is a great alternative ( to building a masonry chimney stack ) for removing the smoke and waste gases from a woodburning, multifuel, gas or pellet stove. The twinwall flue pipe we use is both HETAS and CE approved, waterproof, corrosion resistant and constructed from, stainless steel. Our twinwall flue pipe can be powder coated also in any RAL colour of your choice so as to match that of your property or appliance. See below for details!
SINGLE STOREY: DURA-FLUE TWIN WALL UP AND OUT THROUGH THE ROOF.
DOUBLE STOREY: STOVAX PRO XQ UP AND OUT THROUGH THE WALL 45º.
TWINWALL FLUE SYSTEM OPTIONS
If you are installing a new heating appliance, such as a woodburning or multifuel stove and you don't have a masonry chimney stack, you will certainly require a pre-fabricated chimney system such as a twinwalled insulated flue system. Twinwall systems are a click together chimney system, which can be designed and constructed in order to produce a safe and efficient way to safely remove the combustion gases from your heating appliance, to outside of the property.
WHERE CAN THEY BE INSTALLED?
Twinwall flue systems are suitable for use as both indoor & outdoor flues. Outdoors - though not always - they tend to be fixed to the gable end of the property, running vertically and terminating above the roof tiles (termination height will depend on flue position) In some instances, the flue can exit an extension and run up the front/side or rear of a home so not every flue system is designed the same. This is why we offer a FREE flue design service with our FREE home consultations.
Indoors, twinwall flue systems can be used to pass through floors and roofs. See the image on the right for more details. The roof exit on an internal, twinwall flue system is kept watertight via a flashing, which is usually the part that concerns most customers. However, making the roof weatherproof is not a difficult job. With the proper flashing, it's a fairly easy job to make a weatherproof seal around the flue and roof. An internal flue system tends to be warmer than an external one with it not being subject to the weather elements, therefore, it keeps the flue gases hotter, resulting in better draw and less tar deposits. For more details on these options, we have created sections below for you to view!
WHAT IS TWINWALL FLUE PIPE?
Twinwall flue pipe is basically 2 steel tubes insulated, with around 30mm of insulation ( an inner and an outer layer of stainless steel, with insulation in-between ). The insulation is necessary to keep the gases hot and it also protects the outer skin somewhat, from the internal heat build up - ultimately preventing it from getting hot enough to damage any surrounding structures. Twinwall flue systems are available with a full range of pipes & fittings which means an entire chimney can be built, with pieces, that in essence, are designed to push fit together and then be secured with locking bands ultimately creating a sealed system; providing a solution to modern houses where a chimney hasn't been built.
MATCH TO THE COLOUR OF YOUR PROPERTY!
The TWIN WALLED, INSULATED FLUE SYSTEMS we use, are available in any RAL colour. We can have your entire flue system powder coated so as to match that of the property and or the stove. Contact us to see how we can help with your requirements.
CALL/TEXT/WHATSAPP: 07835 432 264 or 0774 7799 335
EMAIL: grateinspirations@gmail.com
❖ EXTERNAL TWINWALL FLUE SYSTEM ❖
An external twin-wall flue system is constructed from twin wall insulated pipes and other components. From the top of the stove, a piece of single wall pipe (or twin-wall) can be used to connect the appliance to the twin-wall system. This connection is made via an adaptor, which connects to a 45º bend, then a piece of twinwall, which passes through the outside wall to connect to a 135º T piece. The chimney system is then connected / built, tied in and supported on this T-piece (with a base support) and the main wall of the building in accordance with the specific design.
As standard, to comply with building regulations, the twin-wall flue pipe must enter the room (where the appliance is) at the appropriate distance to combustable measurement(s), before connecting to the appliance. And from the 45º bend, to the top of the stove - whether twin-wall or single wall pipe is used - it should travel vertically, at least 500mm before it changes to 45º and passing through the wall. The chimney's height, should be a minimum, of 4.5m from the top of the appliance to the cowl although, depending on the stove, it can be reduced to 3m - 3.5m. Twin wall flue pipe requires NO sealants or pastes or glues. It is a clip-together-system, which is sealed with mechanical locking bands!
HOW SHOULD IT BE BUILT?
It is best to build the chimney so that it goes straight up 'vertically' as possible and as near as possible, to the ridge of the roof. In some instances, particularly when chimney systems are built towards the bottom of a sloping roof, it might be necessary to increase the chimneys height above the minimum 4.5m requirements. The reason for this is to make sure it clears any 'pressure zones' created by wind and or nearby structures, such as trees, which might interfere with the necessary up draft required by the appliance. Where it is not possible to construct a vertical chimney such as with the image to the right where a window is present, an off-set may be used however, NO part of a chimney should form an angle greater than 45°. A run between offsets (bends) should not exceed 20% of the overall height of the chimney system and a maximum of two offsets are permitted in any one chimney, so long as with cleaning access is installed.
❖ INTERNAL TWINWALL FLUE SYSTEM ❖
Whenever a flue pipe passes through floors & ceilings, it is a requirement by law, that it converts to twinwall insulated flue pipe. An internal twinwall insulated flue system travels vertically from the top of a stove through the floors/ceilings of a house and then exits through the roof. When entering or exiting a living space, a ventilated fire-stop plate is fitted on either side of the hole (created for the flue to go through) in the floor & the ceiling. All combustable material (within the hole area) are safely removed/distanced from the flue pipe (electrical cables, etc) in order to meet the appropriate regulations and flue manufacturers distance to combustable requirements.
At this point the flue will then travel further upwards and through the other floors (if any) and into the attic / space. Sometimes obstacles can be in the way, such as roof trusses, and so it may be necessary to add two, 45º bends and possibly, an additional piece of pipe to the system to extend it past the -problem area- creating what's called an offset (see image on left). As the flue system finally exits the roof of the property, a roof support is fitted to the rafters with a finishing plate installed underneath. A weatherproof flashing is then installed on the outside as per roof type & sealed appropriately protecting the property from the elements. A storm collar is fitted where the twinwall exits the flashing to aid the flashing against protection of the elements and finally, a weather cowl is fitted, in order to protect the flue from rain, birds and other possible problems including pest intrusions.
HOW IS THIS SYSTEM SUPPORTED?
With all types of twinwall flue installations, it's vitally important, that the flue system is supported throughout its height. With a twinwall system installed internally, along with several wall brackets, strategically placed and running vertically along the flue path, ceiling supports are installed to compliment the rafter support, ensuring the system is fully secure and not dependent on the stove for support. A starter length can be added as the first pipe off the top of the stove, so that the stove (if necessary) can be removed/replaced, without disturbing the system. The flue pipe, can be boxed in!
We use DURA-FLUE DW twinwall by: www.flue-ducting.co.uk/ and TWIN-WALL PRO twinwall by: www.mi-flues.com
❖ SINGLE STOREY TWINWALL FLUE SYSTEM ❖
EXTENSION / CONSERVATORY
Installing a stove in a single storey extension, is relatively straightforward. The first thing to consider is how the flue is to be run. The flue can either be run out through the wall of your extension via the top or rear of the stove or upwards and out through the roof. Again, either via the top or rear outlet of the stove. When having a flue system installed in a single storey extension - besides the flue direction - there is another important point to consider which is the point the flue exits the roof in comparison to the main building and other adjacent buildings. This is known as... the 2.3m rule!!
WITHIN 2.3M OF THE MAIN BUILDING (OR ADJACENT BUILDING).
In this instance, if the distance between the flue and the main building is less than 2.3m the flue system has to run up the side of the building or if this is not possible it needs to go higher *terminating above the guttering* until a distance of 2.3m from the flue to the nearest part of the roof is achieved.
FURTHER THAN 2.3M OF THE MAIN BUILDING (OR ADJACENT BUILDING).
If a distance of 2.3m (or more) is achieved, between the flue system and the main building, (see image to the left) the flue can be therefore be built straight upwards through the roof of the extension without any special requirements and once again with a specific stove the flue doesn't necessarily need to reach the typical 4.5m height regulation (3-3.5m)
WANT TO SEE HOW IT ALL FITS TOGETHER? To see a step by step twinwall flue installation (photos) click HERE
❖ TWINWALL FLUE SYSTEM PACKAGES ❖
Excellent value stove - budget - packages!
As well as offering high end stoves & flue products both individually and also in packages - to help create your dream project - we have also created 3 budget stove packages and 9 different fireplace packages. And now, we are pleased to announce that we can offer complete, twinwall flue, installation packages at budget costs - tailor made to your own specific needs and requirements. In these specific packages we offer a choice between 5 different hearth materials & 9 stoves all designed to suit the above specific scenarios. We also offer add on items to these deals such as brickslip and split-face tiled backings, offering you the opportunity to build a package unique to your own design & preference.
" WE TRULY HAVE, SOMETHING FOR EVERYONE! "
