It makes a great deal of sense to install a chimney cap, when you look at the benefits. It is recommended that a 6" minimum clearance from top of the flue tile, liner or chimney to the cap lid be followed for proper drafting. In terms of dimension, it can be set on flue liners up to 8-inches and external pipes up to 13-inches. If your flue is oval or round you will need to use a top mount style cap. Each round flue chimney cap below fastens to the outside of single metal pipe flues such as stovepipes. Well it's that time of year again....enjoying the warmth of a fire burning in our home. If you measure chimney flue draft when the heating equipment is OFF you are measuring natural convection in the chimney, air leaks or heat loss up the flue, or a temporary condition. hood, one piece base with built in screening that is 8 in. Grab a tape measure, a pencil and paper, and a ladder. If your flue doesn’t stick up at least an inch, or if you have multiple flues, measure each side of the area you want the chimney cap to cover. Look at the 7 illustrations of flues below and click on the one that looks like your round flue. If your flue is oval or round you will need to use a top mount style cap. If you have a round clay flue, measure its outside diameter. If cracked, the ceramic is best replaced first – or at least bound so that it can bear the pressure from the retaining wires. Measure the total crown width and length, length and width of the area surrounding the flue, and the height of the flue if extended. The Wind Directional Cap does both to provide maximum drafting. Attach the stovepipe to the flange on the wood stove using 1/4-20-1/2-inch metal or machine screws to secure the stovepipe in place. For the basics behind chimney caps, however, read the guide below. ... Just as with the Oval/Round measurements, you will choose a cap that falls in between the measurement range. Find Round chimney caps at Lowe's today. The outer pipe needs to be covered by the bottom ring of the cap to keep out rain however it does not hurt if the outer pipe is overlapped by the cap. The most effective draft inducing chimney caps are those that separate the wind stream as it flows over the cap and those that rotate to align with the wind direction. It's a triple walled pipe, with the interior pipe at 10" and the outer pipe at 14.5". It’s best used when the flue rises above the chimney. Use a ladder that extends at least 3 feet (0.91 m) above your roof so you can safely climb on top of it. Flues are usually 5 or 6 in. So the insertion end was flared out. Before you purchase a chimney cap, measure the top of the chimney, also called the “crown,” as well as the individual flue, or flues, that will need to be covered. Below is a flue that is a cut-away illustration of a Double Walled Air Insulated Flue or a Double Walled Air Cooled Flue. You can also subscribe without commenting. Round Fixed Stainless Steel Chimney Cap (41) Model# FGLTC8 $ 78 00. Your pipe's inner diameter is the number you need to match when selecting a chimney cap; a pipe with a six-inch inner diameter, for example, requires a six-inch chimney cap. When water seeps into the chimney structure, it can cause the masonry to crack. Step 3: Find the liner size by comparing the 90" to the cross-sectional area chart for round liners in Chart A. Below is a Clay Flue , a terra cotta pipe also known as a Masonry Flue. The cap’s flue pipe had a spot weld where it joined the cap, but the end that needed to be inserted had no weld holding it … Use the sheet metal to form the roof of the cap, and then use the wire netting to form the walls of the cap. Measure it using a metal measure. HomeSaver Pro Round Stainless Steel Chimney Cap, Forever Cap Masonry Round Bolt-on Chimney Cap, HY-C Draft King Round Black Bolt-On Chimney Cap, The chimney caps below slip into round clay flues. 24 Gauge, 10 in. Please note that the chimney pot base should not impinge upon the inside surface of the flue liner. If your flue is oval or round you will need to use a top mount style cap.  =  This Website is a participant in various affiliate programs, including the Amazon Services LLC Associates Program. Slips inside the chimney flue, secures with a pressure fit. Slide the new cap into the flue. 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Rather you should use the distance from the fireplace throat to the top of the chimney. A top-mount chimney cap is a basic model that screws through a flange to the chimney crown. Once again, your chimney cap choices depend on the shape of your flue. What to Measure: Measure the inside diameter of your flue to select the appropriate size chimney cap. One exception to this is that round based pots may impinge at the corners of a square flue but not by more than 3/4 in. Then, going in a clockwise direction, measure each of the other sides. How to use the Shaped Liner Conversion Chart. Every Disused Chimney Cap comes with Our 5 Year Guarantee. We once again have a great promotion to offer for our customers. HY-C; Fire Chief; Shelter; Shelter Pro; Gardus; Liberty Foundry; HY-C, a USA manufacturer, has been protecting homes and families since 1947 with home improvement products including chimney covers, UL1618 certified stove boards, firewood storage log racks, nuisance wildlife control screens, and cast iron fireplace accessories. What to Measure: Measure the inside diameter of the innermost pipe and the outside diameter of the outermost pipe; the bottom collar of the chimney cap should be large enough to cover the outermost pipe. Note that "chimney height" for the purpose of determining fireplace requirements, is measured not from the ground outside nor from the "floor" of the fireplace hearth. Homeowners with oval flues typically either need a customized version or to find a rectangular model that will fit over the opening. DuraVent DVL 6 in. One standing back looking at the chimney. Be sure to accurately measure the flue liner before ordering a chimney pot to insure that the pot will fit properly. Well at least it is for some of us. A Flexible Metal Flue Liner requires a chimney cap with a base that inserts into the flue, such as the ones below. WeatherShield Chimney Cap for Air Cooled Flues, VacuStack Chimney Cap for Air Cooled Flues, Enervex Chimney Fan – Use with Air Cooled Adapter. The base of this cap is normally open, to accept one or multiple flues easily, but it can be customized to be completely closed off, except to allow flues (like a chase cover), allowing for maximum protection when needed. To ensure a proper fit, measure the inside diameter of both the center pipe and the outside pipe. To find a local tradesperson and obtain a quotation for the cost of chimney cap installation, please go here. Measure out your materials, using the chimney measurements that you acquired earlier, to create your homemade chimney cap. Now let’s go over what to measure for the different chimney caps. Step 1: Determine what diameter of round liner is recommended for your stove, fireplace, or other appliance. For a Stock or Custom Band-Around Chimney Cap, you will need these measurement: • Start with the longest side of your chimney. 2 Place the chimney cap on the extended flue. Round chimney caps available use this guide to measure and chimney roof cap and gardening and sealing fireplace damper solutions for any round chimney cap and outdoor pests and chimney openings. How to Measure for an Oval Flue Chimney Cap: Oval Flue Chimney Cap Measure Guide. DuraVent PelletVent 3in. Add 18 inches to the measurement. It is formed between a roof surface and a parapet wall or between two roof surfaces and is available with infold, outfold, splashback and squashfold edges. Not all chimney flues are shaped the same, and you may find that you need to have a custom-made chimney cap to fit your Measure the outside length (L) and outside width (W) of the chimney (not the old cap size). Below is a cut-away illustration of a Triple Wall Air Insulated Flue , also known as a Triple Wall Air Cooled Flue. Select the correct cap and check the fit (Photo 1). Chimney-Cap and Damper Combinations Measuring for this cap is as simple as measuring the inside length and width of your rectangular or square flue. Now if you have a single flue chimney with a flue that is either flush or doesn’t extend high enough above the chimney to allow for a flue mount cap, gather the outer length and width of the flue. Select a round flue chimney cap that is nominally the same diameter as your Exposed Insulation Solid Pack’s innermost pipe. 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