This is no job to cut corners though. As a rule of thumb, divide the cubic space by 14 and this will give you a KW output needed for the room. I don't know. The flue used must, under no circumstances, be smaller than the flue outlet of the fire or stove. If your room needs a wood burner between 4-6 KW then you need a small wood burning stove. How hot does a log burner chimney get? The spigot on the exit of the woodburner will give some indication of the manufacturers intended sizing but you would need to refer to their literature before installing. We would recommend a 7" or 8" chimney flue liner for an open fire and a 5" or 6" flue liner for a stove. Clay/ceramic flue liners are manufactured from a specially selected blend of fire clays in a range of sizes in both round and square to suit the range of wood and solid fuel appliances and open fires. Once in your chimney, it will be attached to your flue liner. From that point you will then usually have to change to a minimum 6" (150mm) flexible chimney liner or rigid insulated flue system. My Account; My Wish List ; Sign In ; Create an Account; Skip to Content . Flue Liners Frequently asked questions. Manufactured from polypropylene bristle. It is important you take the time and learn … If its not up to standard we can supply and fit a stainless steel flexible liner. Try our stove output calculator for a rough guide on what size multi-fuel or log burner you need for your room. Schiedel DM Modular block pumice chimney specifications; Making a new chimney with twin wall flue; How to spray paint a stove or flue pipe; Why do I need a Carbon Monoxide Alarm? Once you have decided to install a chimney liner, the next choice is - which one? Do I need to line my existing chimney? You need a minimum room size of 40m3, a permanent air vent at least 1m away from the stove, at least one other heat source present in the room (such as a radiator) and a window in the same room that can open to the outside. It is one of the first questions anyone asks when they start thinking about installing a wood-burning stove: do I need to line my chimney? Pumice Chimney liner - Fitting pumice liners to existing chimneys UK; Dektite ezi seal roof flue flashing fitting instructions; Do you need a chimney for a stove? What Size Flue Liner Do I Need for a Woodburner? Flue liner brushes are threaded one end and are specially designed using short stem soft bristle with effective cleaning of flexible flue liners in mind. People have been using chimneys for hundreds of years without using Flue liners! The first relates directly to health and safety. Its not always necessary. The regulations. The way wood stoves and fireplaces work, a correct match on fitting the flue size to the appliance is a must. Chimney liner Twin wall flue Black stove pipe Pellet stove pipe. The rule here is no leak, no liner. Flue liner and insulation diagram. Many stoves have 125mm diameter outlets but these should be stepped up to 150mm at the join from the flue pipe to the liner. Please note, that this is a guide only, see the full description of stove kw output classifications below for further information on choosing the right size stove for you. Posted on January 19, 2018 by Alun. Will my chimney or flue require anything to be put on the top? Will I need to get my chimney swept? Pumice and concrete liners are certified to BS EN 1857:2010. Sounds to me it needs a good clean. The length of stove pipe you need depends on how much of it will be visible before it enters your chimney cavity. You will normally then use the corresponding sized vitreous enamel flue pipe for the first section of flue from the stove to take you into the chimney. do allow 125mm diameter flue to be used on Defra Exempt stoves if the flue outlet from the stove is 125mm. If an obstruction prevents the ball from moving easily down the flue, the object is removed and the test is repeated. I don't have a chimney, can I still have a stove? Chimney Liner Size Calculator & Guide Provided by Rockford Chimney . The easiest way to decide if you need a chimney liner is to first ask yourself, “Do I have a chimney liner?” If you answered no, the decision is easy. There are three main reasons for fitting a flue liner. So yes - it's a very good idea to line your chimney. Step 1: Find the cross-sectional area of the fireplace opening. if its a long run you may have to go up a size. Search. As a general rule, the diameter of the chimney should match the flue collar on your wood stove. Most houses built after 1964 should have a concrete/clay inner liner in which case you probably don't need to reline unless there is a problem with your existing system. To discover what size wood burning stove you need, measure your room and divide by 14 (so length x width x height in metres, divided by 14). Click to see full answer. To give a rough estimate, simply multiply the width, length, and height of the room to calculate its volume. Multiply the W=36" X H=30" and that equals 1080 square inches of fireplace opening. To provide adequate draft and safe venting of combustion products the chimney flue for a fireplace has to be adequate in size or cross-sectional area. If your chimney is in good order with no leaks, i.e. The chimney breast should never get "very hot", just warmish. What Size Wood Burner Do I Require? Do I need my chimney lined? Fireplace Flue Size Specifications Relation of fireplace size to flue opening dimensions, Table of required chimney flue size and flue dimensions for masonry fireplaces. BS EN 1457:2012 part 1 specifies the technical requirements for clay/ceramic liners to be used in dry, non-condensing conditions. Liner v No Liner . Stoves come in a wide range of different sizes so you’ll want to choose one with a heat output that is suitable for the space it is going to be located within. Do I Need a Flue Liner for My Chimney? Flue for woodburner. Simply having a flue liner does not guarantee full protection and benefits, since chimneys are of different sizes. Before fitting a log burner into your home, you need to calculate the required stove size. Yes, you need to line an existing brick chimney, or just avoid it or go right out through it. Cart. These are easy to install, especially if your chimney stack has any kinks or bends. If you need to manoeuvre your stove pipe into difficult spaces, angled options are available. Woodburner Warehouse. What happens when your flue is too cold? There are many types of log burner flue available and it can often be difficult to know what to look for. The liner you have at the moment for gas, is totally the wrong one for the wood burner. What size of chimney or flue do I need for burning solid fuel? Search. Use a flex or rigid ss pipe, or you can even use Pellet vent if you like. What is a flue liner and why do I need it? If you are hoping to keep the budget for your wood burning stove to a minimum, you may be asking yourself: does a wood burner need a flue liner? What size wood burner do I need? A liner must never be of a lesser diameter than the flue size requirement stated by the manufacturer. Smoke test: It’ll force the smoke back into your home because the cold air is more dense. Doing the work as a D-I-Y homeowner can save hundreds and possibly thousands of dollars. Home; Woodburner flue; Woodburner flue. Wood Burner Flue FAQ What size flue do I need? This can help determine which stove you should buy. There is a regulation that says your installer must satisfy themselves that the chimney is free from defects and suitable for its intended use. Arada have put together a handy guide on this here. When you have an insulated chimney liner, this risk is nearly diminished. Simple answer 6” 150mm minimum diameter if you are burning wood. The liner size is the number one factor for the appliance to burn properly. Venting a Wood Stove. What type of chimney or flue have I got? The ideal flue size is typically determined by the exhaust outlet of the stove or appliance. This can cause smoke to pour out of the stove and it can also cause gas and oil appliances to fail. The size of the flue used depends on the size of the flue outlet on the woodburner. The flue diameter needs to be at least 6 inches (150mm) to comply with HETAS regulations, unless you have a DEFRA approved stove which can be 5 inches (125mm) .If your stove outlet is smaller, you will need to purchase an increaser to enable you to connect a larger diameter pipe. If you are installing a chimney in a new build property and you intend to use it for an open fire, wood burning stove or gas fire, then the chimney does need to be lined to comply with document J of current building regulations. Please note that you will need to use a brush adaptor if connecting to our 3/4 inch polypropylene rods. Divide by 25 if your room is new-build super-insulated. What to look for when buying flue liners for chimneys. How to Tell When You Need a Chimney Liner. Do I need to line my chimney? For a wood burner or other solid fuel fire or stove producing up to 30KW a 150mm flue … Undersized liners will not allow the appliance to vent properly. The flue needs to be sized to give the correct amount of draught to allow the fire to operate at maximum efficiency. You can find out the appropriate wood burner size in kilowatts by: Calculate the cubic space of the room by multiplying the width, height and length. You can use the calculator below to guide you as to the size of wood burning stove that you will need to heat your room. ... (Chimwrap etc.) . In most cases, you will need a chimney liner for a wood burner. These works come under building control, and need to be carried out by a Hetas registered installer, who will issue you a certificate upon completion. Good question, Charles. My Account. Then divide the room’s volume by 14. At Wood burner Warehouse we always recommend you consult a registered Hetas installer. There are a few extra requirements, though. On 2016-04-17 - by (mod) - Can a 3" metal flue exhaust into a 6" flue at the roof? Choosing the right model size. One of the most common questions asked on the HETAS Consumer Helpline is Do I need my chimney lined? You’ll need to calculate the heating requirement of the space in kilowatts. Do I need to have my existing chimney lined? Menu. Installing a stainless steel chimney liner down your chimney is the best and most economical way to revive a deteriorated chimney flue. If you wish to install an open fire flue liner, we also supply the fittings required to complete the job. Do I need a flue liner ? we have a fireplace opening 5feet wide and 30 inches high . We keep labour and material costs to a minimum and we only fit a liner if your existing chimney is unsuitable. What type do you need? Do I need a flue liner for my gas stove? no leaks of smoke into your upstairs rooms or your attic (or your neighbour’s house, in the case of a semi-detached property), then the answer is no, you do not need to line your chimney - nor is there anything in Building Regulations which states that you must. It doesn't even cost that much - you can buy a complete liner and install kit for a medium sized chimney for under £350 and it's money that can quite possibly save your life. But do we need to insulate when we fit a chimney liner? I still recommend reading the rest of this article ;) You might be surprised to learn that getting a flue liner for your stove is actually one of the most important things you can do to keep your stove in top working condition. Step 2: If you are using a round liner and the chimney height is more than 8' above the fireplace opening you can divide the 1080 by 12. You have to determine the condition of the inside of the chimney; maybe the mortar in the brick joints is shot, then maybe a liner would be a good idea. Flues for wood-burning and multi-fuel stoves, including flexible flue liner, single skin flues and insulated flues or twin wall flues. what size flu do we need. A flue that is too wide can be decreased by inserting a flue liner. Divide by 10 if your room is particularly poorly insulated. or by pouring Vermiculite into the gap between the liner and flue after fitting. While this test removes obstructions, it will also determine the size of an existing flue. Also, how do you calculate what size chimney liner you need? We can survey your chimney and do a smoke test. This is for a couple of reasons - mostly that the existing flue is too cold and too large. In an older property, your chimney doesn’t have to be lined to meet building regulations. It will be difficult for the pellet stove to push against all that cold air. A 6-inch stove requires a 6-inch flue. In most cases, a step up is also fine.