FITTING A WOOD BURNING STOVE IN A CONSERVATORY OR OTHER ROOM WITHOUT A TRADITIONAL CHIMNEY STACK. by wood burning stoves
This is a question we seem to be getting asked more and more these days. The difficulty and expense of heating a conservatory or new extension to any property can be a big problem for people, but here is a beautiful and elegant solution. A wood burning stove.
To begin with, do you really want to extend your existing gas or electric central heating system into your new room, and have a plumber running new hot water pipes through your walls out there to another ugly radiator?
Or worse still, are you considering having an electrician gouging a channel along the wall to run an electrical cable out to run an expensive electric heater of some sort?
Many more people these days are eschewing these ideas and plumping for the warmth and beauty of a real fire in the form of a wood or multi fuel burning stove in their homes, so why not in a conservatory or new extension room?
Of course the immediate problem is how do you get rid of the smoke without a hearth and a chimney to stand your stove in? Well the answer is that it can be done using a special flue arrangement that goes straight out through the roof.
Firstly, you will want to decide on where your stove will be placed in your room, and this is an important decision as not only is it an aesthetic choice for you, it will affect where and how your flue will have to go through the roof.
Also at this point you should consider on what your stove willl be standing. If you have a lovely wood floor and stand a stove directly on it, you can rest assured that over time it will become discoloured and damaged by the heat it conducts from the stove legs. Most people would therefore put down a base of some sort. Tiles or stone would do the job and be an attractive feature, but pretty much anything with low heat conductivity and stable enough to support the weight of the stove will be fine.
Next you have to consider the size of the room and choose a stove with a Kw rating of the appropriate size so you don't over or under heat it. If you need help with this use our handy Kw calculator
You will then need the assistance of a good installer to help you set up the flue pipe arrangement.
A quick and relatively simple way is to use the conventional steel/stainless steel flue pipe for the first sections coming out of the top (or rear) of your stove. This flue pipe will be visible in the room, so it is important to choose flue pipe you like the look of - whether it will be shiny chrome or a matt grey to match the stove colour - as in the photo on the left.
This length of flue pipe will also have an added heating bonus as it will radiate more heat into the room as the flue heats up when the fire in the stove gets up to temperature.
As the flue reaches the ceiling height of your conservatory or extension room, you will need to change to twin wall insulated pipe, using an adaptor.
You can clearly see the join in the picture on the left where it changes colour.
In this example the twin wall flue pipe is starting lower down than ceiling height because this enables a false chimney breast to be formed from 3x2 timber and covered with plasterboard.
This allows you to make a nice decorative feature of the stove in a new extension to a property but is not always quite so suitable in a conservatory where you will probably need to go straight up to the ceiling with standard flue pipe and then switch to twin wall flue to finish the job.
You will also need to place a fire guard around any wooden joists in the roof void and continue out through the roof using the twin walled pipe use a flashing kit to seal the external roof and then finish with a suitable cowl as you can see in the picture on the left.
If this was a conservatory flue install, your installer would simply cut a hole in the conservatory roof, using a jig saw, run the twin wall flue out, and then seal using a flashing kit as described above. This method can be used on most single storey flat or pitch roof buildings.
What you can end up with is a beautiful wood burning stove that looks something like the picture on the left, with a single flue pipe coming from the top and a roaring fire to enjoy on those long winter nights ahead.
After all, you didn't add a conservatory or extension to your house to only use in the summer months did you?
The total cost on an installation like this can be considerably less than extending your central heating sysytem and the savings on fuel costs in the future make the prospect even more attractive.
For more help and advice on installing a similar system in your own home, why not give us a call?
wood burning stoves by stovemaestro
Sunday 20 February 2011
Saturday 19 February 2011
wood stoves articel
Excellent article from the StoveMaestro website
WHAT IS A REGISTER PLATE, HOW IS IT FITTED AND WHY DO I NEED ONE?
Fitting a wood burning stove or fire carries no stipulation that the work cannot be carried out by a DIY enthusiast. All work however does have to comply with part J of the building regulations. These regulations can be seen on the Governments planning portal website.
If this work is not carried out by a competent person (E.G a HETAS installer) it must be inspected by someone from your local councils Building Control Department. Solid fuel produces Carbon Monoxide.
This gas, if unchecked is deadly.
Wood burning stoves and fires are, in themselves, fairly simple. The wood, or solid fuel is fed into the chamber, set light to, and the smoke and exhaust fumes escape up a flue to outside air. It is however, absolutely vital, that during this process no heat escapes through any gaps or cracks. Wood burners and other solid fuel fires, including open coal fires, created an immense amount of heat. If this heat is allowed to escape before it gets to open air it can very easily cause a fire and it is imperative you have any existing flue checked by a qualified engineer before attempting to fit a wood burning stove or fire.
The first job, while the fireplace is empty, is to install a steel frame to hold what is called a register plate. The register plate stops loose objects falling from inside the stack into the fireplace and also keeps the flue insulation in place. It should be made of a non flammable material and it fits round the wood burner flue pipe while also blocking off the opening to the stack completely. Proprietary steel register plates can be bought from the fire supplier and they will measure the fireplace opening and position of the flue for you. You will still need to install a frame or some other means of holding it in place.
We use fibre cement for our register plates because it is easy to cut, very light and easy to position.
Next the flue outlet is fitted to the top of the wood burner. To stop heat escaping from any gaps the flue outlet bracket sits in a slight recess at the top of the wood burner and a length of fire rope is placed in between the two. As the flue outlet is tightened down onto the top of the wood burner, the fire rope is squashed into place. Fire rope is also used as the seal between the wood burners door and the frame it butts up to. This is in place when you purchase the woodburner.
Having measured the distance from the top of the fire (inside the flue outlet) to a point 100 mm above the top of your new register plate frame, you can cut off the surplus flue liner and cut the wood burner flue pipe to length. If you use a steel register plate it is as well (if it will not cause an eyesore) to keep the joint between flue pipe and flue liner, below the register plate
A special collar, or adapter is used to join the top of the flue pipe to the bottom of the flexible flue. Sit the flexible liner into the collar so it is located centrally. Tighten the self tapping screws round the collar to hold the liner in position and to secure the collar to the liner. Another length of fire rope is inserted into the collar and fitted around the circumference of the flue pipe. Fire cement is now rammed into the collar so there are no air voids. The joint is then smoothed off and left for a while. Fire cement goes hard when exposed to heat. Many installers use fire mastic for this joint.
The register plate can now be fitted into the frame. The offcut of the flue pipe can be used as a template and a line drawn round it. This circle can be cut out with a jig saw, pad saw or coping saw. This is done for the two parts of the plate surrounding the flue pipe and straight lengths are fitted to fill any gaps. Fibre cement can be bought at builders merchants and it is most often used in strips of 100 or 150mm wide as a tile undercloak to roof verges.
Seal the joints and gaps of the register plate with some fire mastic and you are now ready to get up onto the roof (Please read the relevant safety warnings) and slide the closing plate off, or to one side, while you fill the void between flue liner and chimney with Vermiculite insulation. As you tip the insulation into the stack, tap and shake the flexible flue liner a little to make sure the vermiculite travels all the way to the bottom of the stack.
This will make sure your flue stays efficient by reducing condensation and keeping its heat. Finally, place a chimney pot over the remainder (maximum 150mm) of flexible flue liner and haunch it in place with sand and cement.
Lift the register plate to check the adapter joint periodically.
DON'T FORGET TO HAVE YOUR CHIMNEY SWEPT BEFORE THE INSTALLATION AND REGULARLY AFTERWARDS!
StoveMaestro
WHAT IS A REGISTER PLATE, HOW IS IT FITTED AND WHY DO I NEED ONE?
Fitting a wood burning stove or fire carries no stipulation that the work cannot be carried out by a DIY enthusiast. All work however does have to comply with part J of the building regulations. These regulations can be seen on the Governments planning portal website.
If this work is not carried out by a competent person (E.G a HETAS installer) it must be inspected by someone from your local councils Building Control Department. Solid fuel produces Carbon Monoxide.
This gas, if unchecked is deadly.
Wood burning stoves and fires are, in themselves, fairly simple. The wood, or solid fuel is fed into the chamber, set light to, and the smoke and exhaust fumes escape up a flue to outside air. It is however, absolutely vital, that during this process no heat escapes through any gaps or cracks. Wood burners and other solid fuel fires, including open coal fires, created an immense amount of heat. If this heat is allowed to escape before it gets to open air it can very easily cause a fire and it is imperative you have any existing flue checked by a qualified engineer before attempting to fit a wood burning stove or fire.
The first job, while the fireplace is empty, is to install a steel frame to hold what is called a register plate. The register plate stops loose objects falling from inside the stack into the fireplace and also keeps the flue insulation in place. It should be made of a non flammable material and it fits round the wood burner flue pipe while also blocking off the opening to the stack completely. Proprietary steel register plates can be bought from the fire supplier and they will measure the fireplace opening and position of the flue for you. You will still need to install a frame or some other means of holding it in place.
We use fibre cement for our register plates because it is easy to cut, very light and easy to position.
Next the flue outlet is fitted to the top of the wood burner. To stop heat escaping from any gaps the flue outlet bracket sits in a slight recess at the top of the wood burner and a length of fire rope is placed in between the two. As the flue outlet is tightened down onto the top of the wood burner, the fire rope is squashed into place. Fire rope is also used as the seal between the wood burners door and the frame it butts up to. This is in place when you purchase the woodburner.
Having measured the distance from the top of the fire (inside the flue outlet) to a point 100 mm above the top of your new register plate frame, you can cut off the surplus flue liner and cut the wood burner flue pipe to length. If you use a steel register plate it is as well (if it will not cause an eyesore) to keep the joint between flue pipe and flue liner, below the register plate
A special collar, or adapter is used to join the top of the flue pipe to the bottom of the flexible flue. Sit the flexible liner into the collar so it is located centrally. Tighten the self tapping screws round the collar to hold the liner in position and to secure the collar to the liner. Another length of fire rope is inserted into the collar and fitted around the circumference of the flue pipe. Fire cement is now rammed into the collar so there are no air voids. The joint is then smoothed off and left for a while. Fire cement goes hard when exposed to heat. Many installers use fire mastic for this joint.
The register plate can now be fitted into the frame. The offcut of the flue pipe can be used as a template and a line drawn round it. This circle can be cut out with a jig saw, pad saw or coping saw. This is done for the two parts of the plate surrounding the flue pipe and straight lengths are fitted to fill any gaps. Fibre cement can be bought at builders merchants and it is most often used in strips of 100 or 150mm wide as a tile undercloak to roof verges.
Seal the joints and gaps of the register plate with some fire mastic and you are now ready to get up onto the roof (Please read the relevant safety warnings) and slide the closing plate off, or to one side, while you fill the void between flue liner and chimney with Vermiculite insulation. As you tip the insulation into the stack, tap and shake the flexible flue liner a little to make sure the vermiculite travels all the way to the bottom of the stack.
This will make sure your flue stays efficient by reducing condensation and keeping its heat. Finally, place a chimney pot over the remainder (maximum 150mm) of flexible flue liner and haunch it in place with sand and cement.
Lift the register plate to check the adapter joint periodically.
DON'T FORGET TO HAVE YOUR CHIMNEY SWEPT BEFORE THE INSTALLATION AND REGULARLY AFTERWARDS!
StoveMaestro
Thursday 17 February 2011
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