What Size Stove Jack Do You Need?
If you're mounting a wood stove, cook cooktop, or flue pipe via a wall, ceiling, or outdoor tents, one of the initial questions you'll face is what size oven jack to buy. Get it incorrect and you're looking at a fire threat, a great smoky mess, or a return trip to the equipment store. Get it ideal and the installation fasts, secure, and code-compliant. Right here's just how to determine the right size for your configuration.
Beginning With Your Range Pipeline Diameter
The single crucial measurement is the external size of your range pipeline or smokeshaft pipe. Oven jacks are sized to match this pipe, not the oven itself, so determine the pipeline that will in fact go through the jack as opposed to presuming based upon the range's firebox dimension.
Typical residential and cabin range pipelines run 4, 5, or 6 inches in diameter, while bigger wood stoves and some exterior wood heating systems make use of 7 or 8 inch pipe. Canvas wall camping tents and warm outdoors tents normally use 4 to 6 inch stovepipe, because the cooktops involved are small and portable. Constantly determine your real pipe with a measuring tape instead of trusting the cooktop's provided specs, since suppliers in some cases round or use somewhat different pipeline standards.
Match the Jack to the Pipe, Not the Hole
An oven jack isn't simply an opening cutter; it's a heat-shielding collar that keeps combustible material far from the warm pipeline. A lot of jacks are built with an internal collar sized to the pipe size and an outer flange that extends several additional inches on all sides. This gap is deliberate. It creates the clearance-to-combustibles that structure and fire codes require, so an oven jack is constantly going to look larger than the pipeline alone.
For example, a jack constructed for 6 inch pipe might have a general footprint of 12 to 14 inches throughout, even though the collar opening itself is 6 inches. When buying, inspect both numbers: the collar dimension, which need to match your pipeline specifically, and the overall jack dimensions, which need to fit the wall or roofing system area you have offered.
Think about the Product You're Cutting Into
The ideal oven jack dimension can additionally rely on what surface area it's passing through.
Canvas or Fabric (Tents)
For wall tents and hot tents, stove jacks are usually a fireproof silicone-coated fiberglass patch stitched or grommeted right into the canvas. These are sized virtually specifically to the stovepipe size with simply an inch or more of margin, because the surrounding fabric already provides versatility. A 5 inch stovepipe usually pairs with a jack rated for 5 inches, sometimes listed as "4.5 to 5 inch" to accommodate mild pipeline variant.
Wood Framing (Cabins and Homes)
For a wall surface or roof covering made from wood framing, you'll desire an inflexible, protected pipe support or thimble along with a jack that gives at the very least 2 inches of clearance from the pipeline to any combustible mounting participant, though numerous codes and stove manufacturers ask for even more. Always check your details oven's manual and local building code, since called for clearances differ based on whether the pipe is single-wall or double-wall shielded.
Steel Roofing
Roof-mounted stove jacks (occasionally called roofing flashing 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 fixed pitch increments, so gauge your roofing system slope along with the pipe dimension before ordering.
Do Not Forget the Tornado Collar and Flashing
When you've matched the jack to your pipeline dimension, you'll typically additionally need a storm collar, which fits well around the pipe simply above the jack to maintain water from running down right into the wall surface or roof dental caries. Storm collars are sized to the very same pipe size as the jack itself, so if you're purchasing a 6 inch jack, obtain a 6 inch storm collar to match.
Quick Sizing List
Before you order, gone through this short list.
Measure the outdoors diameter of your real stove pipeline, not the stove's firebox opening. Verify whether you need single-wall or double-wall (protected) clearance specs. Inspect the overall impact of the jack versus your available wall, roof covering, or camping tent panel room. Match the tornado collar size to the pipeline diameter also. If you're roof covering, determine your roof covering pitch for an angled jack.
All-time Low Line
Stove jack sizing boils canvas satchel down to one core rule: match the internal collar to your stovepipe size, then see to it the surrounding product and clearances fulfill the demands for whatever surface area you're passing through, whether that's canvas, timber framework, or a metal roofing. When in doubt, determine two times, check your oven's guidebook for exact clearance needs, and choose a jack ranked for your specific pipeline dimension rather than estimating.
