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how to fit a flue pipe to a wood burner

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how to fit a flue pipe to a wood burner插图

Instructions on How to Install a Flue PipeStep 1 Buy the flue pipe you want to install. Purchase double-wall or triple-wall pipe for a wood stove. …Step 2 Run vertical pipe up through the ceiling and roof. …Step 3 Keep flue pipe as straight as possible for horizontal runs. …Step 4 Screw three sheet metal screws to connect the pipe sections,overlapping at least 2inches along the seams. …

How to connect a stove to a chimney or flue?

The chimney needs to be a minimum height of 4.5 meters. The Viterous enamelled steel flue / steel flue pipe is used to connect a stove to a chimney or flue system. The maximum length that the single skin flue pipe can be used is 1.8 meters from the appliance. The Flue pipe must be three times the diameter of the flue away from any combustibles.

Can you put a flue pipe through the wall?

If building your flue pipe through the wall, it will have to be stripped back to the brickwork. You hearth will be laid and stove put in place. The stove pipe will be attached to your stove and the twin wall flue fitted.

How long can a flue pipe be for a stove?

The Viterous enamelled steel flue / steel flue pipe is used to connect a stove to a chimney or flue system. The maximum length that the single skin flue pipe can be used is 1.8 meters from the appliance. The Flue pipe must be three times the diameter of the flue away from any combustibles.

How do you seal a chimney flue pipe?

Install a flue collar where the pipe connects to the stove. Apply fireproof sealant. Attach a chimney pot or rain stopper cap on top of the pipe to prevent rain from entering. Clean flue pipes annually when not in use for wood stoves.

Do I need a chimney for a wood burning stove?

Luckily for those living in modern homes, you do not need a chimney to install a wood burning stove. However, it may require more work to fit one than in an existing chimney. This is because you will need to fit a twin wall flue system through the roof or wall of your building. Nevertheless, it is still a reasonably simple and cost-effective way to enjoy to benefits of a log burner in a home with no chimney!

How Much Will it Cost to Install a Wood Burning Stove Without Chimney?

The exact cost of installing a wood burning stove without a chimney depends on how much work will need to be done to your home. This will differ significantly from case to case, so it’s best to get a quotation to know exactly how much fitting a log burner is going to cost you. However, along with all the stove parts mentioned above, there are a few things to bare in mind which may affect the price:

What is a twin wall flue?

A twin wall flue system is the key to fitting a wood burner without a chimney. Simply speaking, it is a series of connectable stainless steel pipes that can carry your stove fumes outside. They comprise a stainless steel pipe wrapped in thick insulation and encased by a second outer tube. This keeps the temperature inside …

How thick is a stove flue?

A hearth – your stove must be placed on an appropriate hearth. It needs to be at least 12mm thick and made of a non-combustible material.

What are the extras needed for a chimney sweep?

All the extras… things like carbon monoxide alarms, a fuel supply and an annual chimney sweep will all be necessary, too.

Can a stove pipe go through the ceiling?

Your non-insulated stove pipe cannot be used to go through the wall or ceiling – only your twin wall flue can do this.

How many bends in a twin wall?

Some of the main regulations are: The entire length of the twin wall system must not have more than four bends. None of the bends should be more than a 45 degree angle, excluding the connection to the stove, which may be 90 degrees.

What is a vitreous flue pipe?

The Viterous enamelled steel flue / steel flue pipe is used to connect a stove to a chimney or flue system. The maximum length that the single skin flue pipe can be used is 1.8 meters from the appliance.

How far away from a combustible pipe should a flue be?

The Flue pipe must be three times the diameter of the flue away from any combustibles. Example: if you use a 125mm flue then the distance needs to be (3×125) 375mm away from any combustible material.

What is the minimum diameter of a flue liner for a wood burning stove?

The minimum diameter of a flexible flue liner that can be installed on a wood-burning or multi-fuel stove is 150mm. The only exception is where a Defra Exempt stove is installed. With a Defra Exempt stove you can use a flue diameter with a minimum diameter of 125mm.

What is a twin wall flue?

Twin wall is an insulated flue and can be located just 50mm away from combustible materials. This type of flue system can either run externally on the building or internally. Twin wall flue systems can also be used to re-instate a chimney which has been partially removed to below roof level and covered over.

How tall is a chimney for a stove?

The chimney needs to be a minimum height of 4.5 meters.

Where is the flexible flue liner?

A cowl must be added to the top of the chimney. The flex liner must be secured in place at the top and bottom.

Can a HETAS installer install a stove?

All stoves should be installed by a HETAS Registered Installer, however it is possible for a building control officer to carry out an inspection. Please check that your with your Local Authority that the Building Control Officer can and will be willing to carry out an inspection prior to you commencing the installation. Upon satisfactory inspection / installation the HETAS Installer or the Building Control Officer will issue a HETAS Certificate. Without a HETAS Certificate the manufacturer’s warranty may be invalid if no Certificate of installation is available.

How does creosote leak from a wood stove?

The greater concern is creosote leakage through the wood stove pipe connection points. Creosote can often be in liquid form when the stove pipe is cooling and the fire is dying down . The lower temperature condensation will drip creosote down the pipe. If the male end is incorrectly pointing upwards, liquid formed by condensation will always travel down the path of least resistance, and will eventually drip outside of the pipe just like in this picture. By having the male end pointing down, any drips will fall into the female end of the pipe below and back into the stove to be burned.

What is the pipe needed for a wood stove?

Freestanding wood stoves require double wall or single wall stove pipe to connect the stove to the chimney or chimney pipe. Failure to properly install the stove pipe can cause creosote to leak out of the pipe and can be a very unpleasant experience.

Where should the pipe be inserted for wood burning?

Also, the wood stove pipe should always be inserted into the collar of the wood stove outlet.

What are chimney flues made of?

Chimneys and flues are also available in a number of different materials – stainless steel, concrete, pumice, clay or ceramic and plastic. Concrete, pumice and clay or ceramic are collectively referred to as masonry chimneys. Plastic flues are only allowed to be used with low temperature condensing applications. Care must be taken to check the designation of stainless steel chimney systems and flexible liners as a limited number are specifically designed for use with gas fired appliances. These must not be used with wood burning or multi fuel appliances. Clay and pumice chimney systems and liners are suitable for wood, multi fuel, oil and gas. Concrete gas flue blocks, as the name suggests, are only to be used with gas effect fires and must not be used with wood or solid fuel fires.

What is a flue for a woodburner?

Flue for woodburner. Flues for wood-burning and multi-fuel stoves, including flexible flue liner, single skin flues and insulated flues or twin wall flues. Chimneys and flues are also available in a number of different materials – stainless steel, concrete, pumice, clay or ceramic and plastic. Concrete, pumice and clay or ceramic are collectively …

What is a flexible liner?

Flexible liners are used to reline an existing chimney. Care must be taken when selecting a flexible liner. There are two types of flexible liners: – Twin skin liners, manufactured from overlapping strips of high grade stainless steel to give a smooth sealed flue-way.

What is a stainless steel chimney?

Stainless steel system chimneys consist of two concentric stainless steel metal walls with insulation filling the annular space between them. Some systems have a ceramic liner, which can offer a longer life.

Can plastic flues be used with gas stoves?

Plastic flues are only allowed to be used with low temperature condensing applications. Care must be taken to check the designation of stainless steel chimney systems and flexible liners as a limited number are specifically designed for use with gas fired appliances.

Why is double wall flue pipe good?

A sealed double-wall pipe is a good choice to maximize draft and minimize creosote deposits.

What is a straight up flue pipe?

The ideal flue pipe assembly is one that rises straight up from the appliance flue collar and directly into the chimney with no elbows. The system at the right is single wall pipe with an inspection wrap (pipe coupler) to allow it to be assembled and disassembled without moving the stove.

Why do straight flue pipes need less maintenance?

Straight assemblies also need less maintenance because there are no corners for creosote deposits to accumulate.

What is a vented double wall pipe?

A vented double-wall pipe allows cooling air to pass between the inner and outer layers. Where the flue pipe assembly is short and straight, a vented double-wall pipe can be acceptable. However, vented pipe is not a good choice for longer flue pipe assemblies or for appliances that are expected to produce low flue gas temperatures.

Why can’t you use galvanized flue pipes?

Galvanized flue pipes must not be used because the coatings vaporize at high temperatures and release dangerous gases. Use black painted flue pipes.

What is the minimum clearance for a combustible pipe?

Minimum clearance from combustible material: 450 mm (18 in.). The minimum clearance may be reduced by 50 percent to 225 mm (9 in.) if suitable shielding is installed either on the pipe or on the combustible surface.

How many screws are needed to fasten a joint?

Each joint in the assembly must be fastened with at least three screws.

Where to fit flue pipe on stove?

Here the fitter has chosen to fit the flue pipe to the rear of the stove – maybe to bring the stove more into the room. Soot build up is prevented by the soot collection area in the T. You must have access to the rear of the fireplace to access this soot collection area – so only wide builder’s openings are suitable. Sweeping is via the soot collection door or a soot door in the vertical flue (a sweep may desire both).

Does a Charnwood stove have a soot door?

Some stoves (Charnwood C-Series) have a purpose designed 45 degree rear exit, this ensuring soot cannot build up in the pipe. Sweeping is via the stove (if the 45 is designed to allow this) or a soot door in the vertical steel pipe (not shown on graphic). This option is excellent for bringing a small stove more into the room if the recess allows less air gap left and right than desirable.

Can you put a pipe in a chimney?

It is very rare that I do this but it is a very viable option. The hearth and stove will take up more space within the room but it is fairly simple to do. The pipe passes through a hole in the chimney breast and is protected from your new mortar by fireproof rope or webbing.

Who owns Stove Fitter’s Warehouse?

Stovefitter’s Warehouse is owned and managed by Julian Patrick, blogger and author of The Stove Fitter’s Manual. Julian was previously a full-time installer of wood-burning stoves (including solid fuel heating systems). He laid down the tools in 2013 to write his stove manual and open a small shop in North Wales (the Wood Stove Hut, …

Can you use a chimney liner in a fireplace?

You are here because you want to fit your stove to a chimney liner within a fireplace recess (builder’s opening). Because chimney liners can only be used within a chimney then you must have a chimney.

Who is Julian Patrick?

Julian Patrick is the author of The Stovefitter ‘s Manual and an experienced wood burning stove installer (including solid fuel heating systems). Laid down tools in 2013 to write The Stove Fitter’s Manual and open a small shop in North Wales (the Wood Stove Hut).

What is the other type of chimney venting?

The other type of venting is called a solid pack or fully insulated chimney system . This type of system features a layer of solid insulation between the inner and outer chimney walls. Typically, this insulation consists of a ceramic blanket, mineral wool, or fiberglass.

How does a welded cap work?

Welded or riveted caps are affixed to the end of each chimney section or riveted braces between the pipe walls make physical separation impossible. Built-in, high-efficiency fireplaces and wood- burning stoves are capable of extremely high temperatures.

How many square feet should a chimney chase be?

Doing this leaves room to encircle the chimney pipe. Smaller dimensions for a rough frame of a chimney chase are about two square feet. This is before adding external cladding or veneer.

How many walls does a chimney have?

Many systems use two walls, but there are also three-walled systems. Since air does not insulate as well as a solid material, these chimney systems are usually large. Their design allows for at least two inches of air space between each wall layer.

What is a three wall chimney?

Three-wall chimney systems use a combination of air-cooled and insulating components. The solid insulation fits between the inner and center walls. The space between the center and outer walls circulate air for more cooling.

What is an air cooled chimney?

The first is known as an air-cooled chimney system. As the name implies, air-cooled systems use air for cooling. Space between the chimney walls allows for outside air to flow freely. Many systems use two walls, but there are also three-walled systems.

Why do we need insulated chimneys?

So, they need insulated chimneys to maintain safe temperatures for surrounding combustible materials. Third-party companies manufacture many insulated chimney systems, rated for specific appliances. In some cases, many brands can fit a single appliance, which can cause some confusion on which is best. We cover the differences between brands and material grades in further detail below.

What Is a Non-Chimney Installation?

Planning a brand new flue system may seem daunting at first but with this guide we hope to remove the mystery of creating a twin wall installation to suit your home, avoid the common pitfalls and understand Approved Document J of the building regulations in language we can all understand ( highlighted in bold ).

Why Do I Need To Use Twin Wall Flue Pipes?

The three main benefits of starting a flue system with single wall pipes are they tie in with the traditional aesthetic of a log burner, can withstand the temperatures produced in the outlet collar due to the enamel and they transfer a lot of heat to the outside of the pipe, maximising the heat output produced by the stove. However, it is for this very reason that it is unsafe and even illegal to pass a single wall pipe through a wall, ceiling or roof as the outer surface will become far too hot and may transfer that heat into nearby combustible materials such as joists and furnishings.

How High Must a Flue System Rise?

The final aspect of your flue system is ensuring you attain the necessary overall height and choice of suitable terminal…

How to install a single wall stove flue?

1) Start your system with a length of Single Wall, Vitreous Enamel Stove Pipe in the same diameter as the outlet on the stove. 2) Connect a Single to Twin Wall Adapter to convert from this Single Wall Pipe to insulated Twin Wall Pipe a minimum of 150mm before reaching any surface (ceiling or wall). 3) The remainder of the flue system must be in …

What is flashing on a roof?

The Flashing itself is a silicone or EPDM rubber cone that sits atop a base (traditionally lead but more likely aluminium these days) and can be cut back to tightly grip around the flue to provide a weather proof seal on the roof. However, Flashings do not need to be confusing as they basically fall into one of only two categories; either suitable for a tiled/slate roof or not. Flashings for tiled roofs have a large base which needs to be secured underneath the tiles whereas Flashings for every other roof type (flat, corrugated, wooden etc.) has a small base designed to be secured on top of the roof surface.

What is the minimum diameter for a flue?

The minimum internal diameter for a flue system when you reach the Twin Wall section is 6” (150mm) and this is easily attained by selecting the correct Single to Twin Wall Adapter. It is a common misconception that a system increases when it converts from Single Wall to Twin Wall flue simply due to the change in the overall size of the pipe but this is incorrect. We are only concerned with the internal diameter of the system and so to maintain the same diameter throughout (i.e. 5” to 5”) you require a Single to Twin Wall Adapter and to increase the diameter (i.e. 4” to 5”, 5” to 6” etc) only then do you require an Increasing Single to Twin Wall Adapter.

What is a twin wall flue?

As the name suggests, these pipes feature separate inner and outer skins with a layer of insulation between to prevent heat transfer to the outer edge of the pipe, making them safe to run through any surface type and compliant with Approved Document J of the current Building Regulations. By keeping the gases within the flue warm, this encourages the draw to continue rising and prevents cooler air outside from negatively affecting this

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