What Size Stove Jack Do You Need?
If you're mounting a wood stove, cook oven, or flue pipe via a wall, ceiling, or tent, among the first questions you'll run into is what size range jack to buy. Get it incorrect and you're looking at a fire danger, a great smoky mess, or a return journey to the equipment shop. Get it best and the setup fasts, secure, and code-compliant. Here's just how to figure out the appropriate size for your arrangement.
Begin With Your Oven Pipe Size
The single crucial measurement is the outer diameter of your cooktop pipe or smokeshaft pipe. Cooktop jacks are sized to match this pipe, not the oven itself, so gauge the pipe that will in fact go through the jack as opposed to guessing based on the cooktop's firebox size.
Typical household and cabin range pipelines run 4, 5, or 6 inches in size, while larger wood stoves and some exterior wood heating systems use 7 or 8 inch pipeline. Canvas wall surface outdoors tents and hot camping tents commonly utilize 4 to 6 inch stovepipe, given that the ranges entailed are small and portable. Constantly measure your real pipe with a tape measure instead of relying on the cooktop's noted specifications, since makers occasionally round or make use of slightly different pipe requirements.
Suit the Jack to the Pipe, Not the Hole
A cooktop jack isn't just an opening cutter; it's a heat-shielding collar that maintains combustible material far from the hot pipeline. Most jacks are developed with an internal collar sized to the pipeline size and an external flange that spans several additional inches on all sides. This space is deliberate. It develops the clearance-to-combustibles that structure and fire codes require, so a range jack is always going to look larger than the pipe alone.
For instance, a jack constructed for 6 inch pipeline could have a total impact of 12 to 14 inches throughout, despite the fact that the collar opening itself is 6 inches. When shopping, check both numbers: the collar size, which should match your pipe exactly, and the general jack dimensions, which need to fit the wall or roofing area you have offered.
Take into consideration the Product You're Cutting Into
The ideal oven jack dimension can additionally rely on what surface area it's travelling through.
Canvas or Textile (Outdoors Tents)
For wall surface outdoors tents and warm camping tents, oven jacks are normally a fire-resistant silicone-coated fiberglass patch sewn or grommeted into the canvas. These are sized practically exactly to the stovepipe diameter with simply an inch or 2 of margin, given that the bordering textile currently offers versatility. A 5 inch stovepipe generally pairs with a jack rated for 5 inches, sometimes listed as "4.5 to 5 inch" to accommodate slight pipeline variant.
Wood Framing (Cabins and Homes)
For a wall or roof covering constructed from timber framing, you'll want a rigid, shielded pipeline support or thimble along with a jack that provides at the very least 2 inches of clearance from the pipeline to any type of combustible framing participant, though lots of codes and range producers call for even more. Constantly check your specific cooktop's guidebook and regional building code, since called for clearances differ based upon whether the pipeline is single-wall or double-wall insulated.
Steel Roof covering
Roof-mounted range jacks (sometimes called roof covering blinking or a roofing system jack) need to match both the pipeline diameter and the pitch of your roof. These are commonly flexible or come in dealt with pitch increments, so determine your roofing system incline along with the pipe dimension before ordering.
Do Not Forget the Tornado Collar and Flashing
When you've matched the jack to your pipeline size, you'll generally likewise need a tornado collar, which fits snugly around the pipeline just above the jack to maintain water from running down into the wall surface or roofing system dental caries. Storm collars are sized to the same pipeline diameter as the jack itself, so if you're getting a 6 inch jack, get a 6 inch tornado collar to match.
Quick Sizing Checklist
Prior to you order, run through this list.
Step the outdoors diameter of backpacking your actual oven pipeline, not the cooktop's firebox opening. Validate whether you need single-wall or double-wall (insulated) clearance specifications. Check the overall impact of the jack against your readily available wall, roofing system, or outdoor tents panel area. Match the storm collar dimension to the pipe size as well. If you're roof, measure your roofing pitch for an angled jack.
The Bottom Line
Oven jack sizing comes down to one core guideline: match the internal collar to your stovepipe diameter, then make sure the bordering material and clearances satisfy the needs for whatever surface you're travelling through, whether that's canvas, wood framework, or a metal roof covering. When unsure, measure two times, examine your range's manual for precise clearance requirements, and choose a jack ranked for your details pipe dimension rather than approximating.
