This opening will vary in size, but generally you will be installing a 6″ or 8″ chimney liner. A cast-iron surround will be very heavy, so support it with a timber prop before you attempt to undo the screws holding it to the wall. Take the balloon by the handle and hold it up to the opening of your chimney above the main firebox. Best way to fix door lining to thin aerated block wall? event.preventDefault(); Best way to map drain pipes under block paving? Blocking off your chimney top will prevent undesirable elements from entering your house. We make our stainless liners and components in-house from the best alloys of stainless steel. $("#local-search-services").val($("#local-search-services-req").val()); Check the Chimney Stack is not Capped. $('#local-search-submit').click(function() { If your old fireplace has been blocked off ... To make sure the fire draws properly, a chimney height of 4.5m or over is usual. To build a block off plate follow these instructions. Here's how to reopen a hidden fireplace. Watch and listen to Shell answer a question from one of his HouseSmart Club members who wants to know how to block off their unused chimney. The masonry should be suitable brick, medium weight blocks or stone and mortar jointed. See IRC R302.11 and R1003.19. Our stainless liners are backed by a lifetime warranty. Chimney-Top Chill Blocker. The block off plate will have a hole in the center of it that is slightly larger than the flue liner you are using. We can make any custom chimney part you may need. or if you are doing it yourself you can find suppliers local to you. The damper inside the chimney -- just above the firebox or area where a fire is built -- helps keep cold air, birds and animals out when the fireplace is not in use. } else { We can't afford that at the moment though so were wanting to put an electric stove (looks like wood burner) in the open space into the fireplace. Cap off the top and no need to ventilate as it is fully filled. While the idea of a fireplace is romantic, it might be a nuisance in practice. You can create your listing free at DIYnot Local $( "#local-search-error" ).hide(); Then take a peek at the Chimney Balloon every year or two just to top it off with air if needed. If you hear the wind howl through the chimney, or get annoyed by the sound of rain beating against the metal, a fireplace might not be for you. How to Block Off a Fireplace. There is no need to remove the fireback from the fireplace, although if a back boiler is fitted, this should be removed once the plumbing has been isolated and disconnected. However i don't want all the heat going up the chimney. Select the supplier or trade you require, enter your location to begin your search. $( "#submit-search" ).blur(); $("#local-search-location").val($("#local-search-location-req").val()); Exactly how much air is drawn out of your chimney depends on the ‘stack effect’, which relates to the movement of air into and out of buildings. The second is that it will be far more difficult to ensure that you are stopping all the draughts. We offer the best prices on quality stainless steel liners. Also we live in a stair so the chimney is shared with 6 other houses so not … We can save you cash! The block off plate is a horizontal plate that blocks off the opening where normally a damper is in a fireplace. Blocking up an unused fireplace . And chimneys draw air out, whether or not the fire is going. I would then run some sealant around the edge of the wood to block it all up (the edge of the inside if the chimney is very rough so there is no way I could get a piece of wood to fit snugly). The chase containing the flue is the vertical space, the attic is the horizontal space, and the metal stop acts as the fire stop, therefore there is no code violation. Fire blocking, in this instance, is supposed to cut off fire from spreading from an enclosed vertical space to an enclosed horizontal space. The Chimney Balloon effectively blocks the chimney, stopping warm air from escaping and stopping cold air from getting in. I have a open chimney and a electric fire (not very safe i know). We have also come across people insulating their chimneys using tea towels and newspaper in the past – which again as flammable materials are a really bad idea. Support the fireplace with a timber support whilst unscrewing. To prevent this from happening install a block off plate. Bricks and mortar that stay too damp for extended periods don’t do as well as chimneys that have air flowing through them. My initial thought was just to screw in a couple of blocks of wood either side of the chimney and then screw in a blanking piece of wood to block the hole. When you have such a large opening around the liner, a large amount of the hot air generated from the wood stove will be rising up into the chimney cavity. Discussion in 'Building' started by mjgreen81, 29 Jan 2016. When you buy a liner from us, you are dealing with a company that knows its products inside and out. To prevent this, it’s recommended that the chimney flue is blocked off – a chimney balloon is a good way to temporarily block up your chimney. $(function(){ Most of these electric inserts are closed systems so they put no heat up the flue at all (see the image above that the top is flat and it is fully encased), If you unit isnt encased, you just want to make sure the heating element and fan will not come in contact with the Chimney Balloon. However, as in your case, where an existing chimney is in situ, then you will require some modifications. When you install a fireplace insert with a stainless steel chimney liner, you should install a block off plate. There is no need to hire someone to block your fireplace for you, however. $( "#local-search-error" ).show(); I had the same doubts especially after reading numerous posts about the benefits of a blocking plate. }); This opening will vary in size, but generally you will be installing a 6″ or 8″ chimney liner. Find out more. We like to use the fire every now and then, but most of the time all the warm air escapes up it. Cutting out the middle man when buying a liner means you save big money. Before you block off your chimney, consider this first. Basically made a cardboard template, to get the proper angles and perfect size, cut enough extra for the flanges to mount the block off plate and transfer the template to sheet metal. What’s the best way to block up our chimney during cold weather? I dont use the fire. Replace the damper. Creosote buildup in your chimney can drastically reduce the efficiency of your fireplace. You’re going to have premature deterioration of the masonry because it can’t breathe. return; Rodents, squirrels and birds may also be attracted by an open chimney. Apply a bead of butyl rubber caulk around three sides of the chimney at the top, and set the cut piece of metal on the chimney so the edges line up with the caulk bead. You can follow these easy steps to block off your fireplace or even to close it up completely. In order to provide stability, masonry chimneys should be tied to, or supported by, adjoining walls of the building. Given that Ferndown must have encountered this dilemma before perhaps they will have suggestions. Install a heat-exchange system. This is because the block off plate will be different for almost every fireplace. We currently have an open fire and we have just excavated the space to make it bigger for a wood burning stove. The balloon should be parallel to the opening so it fills the entire area. Place the balloon in the chimney flue. Help identifing this block and best fixings to use, Best way to finish an internal block wall. }); http://www.screwfix.com/p/manrose-f...4ln4FyIxc_JyC1iYXp6_rrrx1ODSbFS43qRoC2j3w_wcB, (You must log in or sign up to reply here.). Deluxe Terra-Cotta Top Plate - 8in X 13in, Flex King PRO Chimney Liner - 5.5X45 - Insert Kit, 316L – Venting for wood, coal, oil or gas appliances, Do not buy until you talk to us! For this you can use bricks, lightweight building blocks or more lightweight materials such as hardboard, chipboard or asbestos. After the advent of central heating in the late 1950s, many people blocked up their original fireplaces to make way for modern gas or electric fires, but fireplaces are now regaining their status as a desirable focal point. } Rain and snow will easily come in, causing dampness. The block off plate is a horizontal plate that blocks off the opening where normally a damper is in a fireplace. Depending on how you fit the surround, you could pull it off the wall a little and allow an air flow to a vent behind the fixture. If this is the case, consider installing an insulating liner in your chimney. Please do not assume that because it looks clear it is suitable for a fire that has any kind … When you purchase a flue liner from us, you will have peace of mind, once you buy our products you can come back to us for help at any time. 1-866-941-5112. Can i do this and what materials should i use For all other things fireplaces, check out our dedicated hub page. Simply inflate a little, locate in in position, then inflate it until it holds itself in place. Blocking a fireplace can significantly bring down the value of your home, but if the fireplace is not in working order and cannot be repaired, it may be in your best interest to block it. Sometimes chimney fires make loud echoing noises, while other times, the only sign of them are the flames erupting from the top of the chimney. Or if you have a chimney breast then you can vent the flue from one of the side cheeks of the c/breast. Insulate your chimney. This way, hot air is blown back into the room rather than left to escape up the chimney. So, with the block off plate installed at the top of my chimney by my installers, and than the cap put on, would I be doing myself harm installing a plate on the inside bottom as well? But keeping our homes cosy takes more than stoking up the fire and putting on the heating. Unscrew the fixing screws but if this is not possible due to corrosion carefully prise the lugs away from the wall. The presence of carbon monoxide in a home can be fatal to humans and pets. Chimney Liner Depot is the number one online wholesaler of flexible and rigid liners liners. We need to keep warm air in our homes. Which is a lightweight blown aggregate insulation. But would like to stop the draft coming down the chimney and be able to use it if needed. If you need to find a tradesperson to get your job done, please try our local search below, They are almost always best to be fabricated on site. $("#local-search-form").submit(); If you want to light the fire, it is easily deflated and can be stored until you need it again. It is at this stage you will need to check the builders have not capped off the chimney. Is it safe to block a chimney? Chip away the plaster to reveal the lugs on either side of the fire surround. After an old fire surround and hearth has been removed, the hole in the chimney breast can be bricked in to tidy up the wall. If you need to make the balloon fit better, push the corners of the balloon up into the chimney with your fingers. if ((!$("#local-search-services-req").val()) || (!$("#local-search-location-req").val())) { Im sure it should be blocked off. Call in a Corgi registered plumber to test the flue. Alternatively, if you can't get to the roof, then a chimney balloon can temporarily seal the bottom and stop your warm air escaping up the chimney. To block the mortar dust coming off your chimney wall, try this inexpensive solution: paint on a waterproofing product, such as clear Olympic Waterguard Multi-Surface Waterproofing Sealant. Blocking a chimney also has other benefits. All coal-effect electric fires do not require a chimney. And believe me I quizzed my installer on this topic because I was convinced I was … What size do I need? Having a blockage in the chimney’s flue liner can also cause carbon monoxide poisoning. You can cap your chimney or – if you use it occasionally – block the draught with an inflatable chimney balloon. Firstly, if you forget it is there and light the fire, you can actually cause a chimney fire. When you install a fireplace insert with a stainless steel chimney liner, you should install a block off plate. Are you a trade or supplier? A blocked chimney can lead to a dangerous chimney fire. You may soon find yourself with more residents in your house than planned for. If you’re fitting a full electric fireplace suite, you’ll have to cut away section of the skirting so that it fits nicely in place against the wall. Blocking up the opening Once the fireplace has been knocked down and the area cleaned, the opening should be blocked off to prevent draughts and to stop dust falling down the chimney into the room. 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