How to Measure a Stove Pipe Measure the inside diameter of the flange on your wood stove. There are two kinds of chimney caps. putting chimney pots on an unused chimney and capping them is asking for trouble although shops will tell you there caps dont leak I have found some of the most common caps are badly designed and leak for fun although the manufacturers will never admit this, covering and adding in air bricks is by far the safest option if the chimney cannot be lowered below the roof covering. An average UK house brick is 22.5 centimetres (or nine inches) wide in older properties or 21.5 cm in modern builds. Video Transcript - Are Chimney Caps Necessary? I live in a mid-terraced house and I live in the house to the right of the picture. This tells you if you should waterproof the chimney. If your chimney is capped, they will look for the next best thing and find your tower. If you see rust streaks toward the top of your chimney, it’s likely a sign the chimney cap needs repair or replacement. A chimney sweep can cheaply tell you whether the flue is open (smoke pellets) and whether it needs a new flue, which would usually be the biggest expense. If there is no leak there, repeat the process on the other side of the chimney, one shingle at a time. For chimney cap dampers, look for a chain inside your fireplace. Burning wet wood can create more flammable material deposits (creosote) on the inside of the chimney, Dimmitt explained. Most sweeps will clean your chimney and remove/or install pots and caps. A chimney cap is a covering for the top of your chimney, and it usually includes wire mesh. Chimney caps protect the inside of your chimney and the inside of your home from weather damage and outdoor pests. To estimate the size or width of the chimney cap needed, view from the side and compare nearby bricks to the pot. When this occurs, the chimney cap should be inspected and replaced if damaged. You want to make sure that the bottom of the bracket is perfectly aligned with the bottom of the cap. The flue liner is visible above the chimney crown. “No Christmas trees,” Dimmitt said, adding that doing so can result in a massive house fire. Protect surrounding floors and furniture. Some ventilation holes are a good idea so that the chimney is still a ventilated space so consider leaving a small gap or hole somewhere when you block the chimney off. That’s why it’s important to have both carbon monoxide and smoke detectors in your home, he added. Also, your chimney cap may not have been installed correctly in the first place. If you only see the metal plate that’s blocking your line of sight, then the damper is closed. If it can be converted, the gas line is capped. Carry out a visual check The continuous exposure to moisture, creosote, and other contaminants can result in rust or corrosion and weaken its effectiveness. We will inspect the chimney cap and recommend replacement, if necessary. If it’s hanging freely, the damper is closed. They are usually made of steel or copper mesh and come in a variety of styles to match the outside of your home. Whereas a crown and chase cover are what covers the bulk of the top of your chimney, there still obviously has to … Here’s how to Tell. If the top of the chimney is capped with building slabs, as is often the case rather than flaunched, or fitted with a concrete cast top, it risks leaks down a flue where slabs have been joined together. You should block off the bottom of the chimney wither with a register plate or by closing the baffle at the back of your fireplace if you have one. Although the chimney cap is tightly secured to the chimney crown, its continued exposure to strong winds and heavy rain could cause it to loosen or blow off the chimney. Check out this website and read reviews of RATED roofing contractors. The organization recommends having your chimney inspected and cleaned every year by a qualified professional who can check to make sure it’s structurally sound and in good working order. The crown is the concrete slab on top of your chimney. A Simple Cap. The flue and chimney must be reinstated if you intend to have a fully working fire. Your local code enforcement office will be able to tell you what documents or permits will be necessary for the project. It has an added advantage of helping to prevent animals, pests, and debris from obstructing the flue while still allowing smoke and fumes to vent. The first thing to check here is to see if your chimney stack or chimney pots are open-topped or capped. You may suddenly have a small bird or animal in the chimney causing problems. The chimney rises at least 2 feet above where it exits the roof. When a pro installs the chimney cap, they often include the cost of the cap, removal and disposal of the old if needed, as well as installation and cleanup. Telling whether a damper is open or closed will be easier as you become familiar with your chimney. If the creatures are chimney swifts, just wait a few weeks and they will leave on their own. Structural experts will need to be contacted to explain any potential concerns in the event you are removing the breast from one or more floors. In most cases, we can install your new chimney cap during the same visit. The sad news comes as a reminder to homeowners about the dangers of chimneys as fall begins and cold weather approaches. Not to be confused with a chimney crown or chase cover, a chimney cap is located at the very top of your chimney and is a metal structure that covers the opening on top. The general rule of thumb is that a masonry fireplace should be swept before 1/8" of soot accumulates. If there are leaks you will have to have a tube flue inserted in the chimney. Replacing the chimney cap will minimize downdrafts. Bonus: #6 Chimney Leaks That Aren’t Chimney Leaks. If you experience a chimney fire, it is very important to have the chimney swept and inspected before you use it again. If it’s been more than a year since your last chimney inspection, give us a call to schedule a visit. If not, the entire fireplace would have to be replaced to burn wood -- if your chimney can handle it. by FluesBrothers | Oct 29, 2019 | Chimney Maintenance, Chimney Repairs, Chimney Sweep, Creosote. “Basically the fireplace burped, and when it burped onto the roof, the roof lit, and just the way the day was and the weather, it just went up in kind of no time, but it burned for a long time," she explained.