What Size Cooktop Jack Do You Required?
If you're mounting a wood stove, chef oven, or flue through a wall surface, ceiling, or camping tent, one of the very first questions you'll encounter is what size oven jack to buy. Get it incorrect and you're taking a look at a fire threat, a smoky mess, or a return trip to the equipment shop. Get it best and the installment is quick, secure, and code-compliant. Here's just how to figure out the right size for your configuration.
Beginning With Your Range Pipeline Diameter
The single crucial measurement is the outer diameter of your range pipeline or chimney pipeline. Cooktop jacks are sized to match this pipe, not the cooktop itself, so determine the pipeline that will actually travel through the jack rather than thinking based upon the range's firebox dimension.
Usual domestic and cabin oven pipelines run 4, 5, or 6 inches in diameter, while larger wood stoves and some exterior wood heating systems make use of 7 or 8 inch pipe. Canvas wall camping tents and warm tents usually make use of 4 to 6 inch stovepipe, because the cooktops involved are small and mobile. Constantly measure your actual pipe with a measuring tape as opposed to trusting the range's provided specifications, since producers occasionally round or make use of slightly different pipe criteria.
Suit the Jack to the Pipeline, Not the Hole
A stove jack isn't just a hole cutter; it's a heat-shielding collar that maintains flammable product away from the hot pipe. A lot of jacks are constructed with an internal collar sized to the pipeline diameter and an outer flange that spans a number of additional inches on all sides. This void is willful. It creates the clearance-to-combustibles that building and fire codes need, so an oven jack is constantly mosting likely to look larger than the pipeline alone.
As an example, a jack built for 6 inch pipe might have a general footprint of 12 to 14 inches throughout, although the collar opening itself is 6 inches. When purchasing, examine both numbers: the collar dimension, which must match your pipe precisely, and the general jack measurements, which require to fit the wall surface or roof covering room you have available.
Consider the Material You're Cutting Into
The right stove jack size can also depend upon what surface it's going through.
Canvas or Material (Camping Tents)
For wall surface camping tents and warm outdoors tents, oven jacks are normally a fire resistant silicone-coated fiberglass spot stitched or grommeted right into the canvas. These are sized nearly precisely to the stovepipe diameter with just an inch or two of margin, because the surrounding fabric already offers flexibility. A 5 inch stovepipe generally pairs with a jack rated for 5 inches, sometimes detailed as "4.5 to 5 inch" to suit mild pipe variant.
Timber Framing (Cabins and Houses)
For a wall or roof made from wood framework, you'll desire a stiff, protected pipe support or thimble along with a jack that gives at the very least 2 inches of clearance from the pipeline to any type of combustible framing participant, though lots of codes and oven producers call for even more. Constantly inspect your particular stove's guidebook and neighborhood building regulations, because required clearances differ based on whether the pipeline is single-wall or double-wall shielded.
Steel Roof
Roof-mounted range jacks (sometimes called roof covering blinking or a roof covering jack) need to tent durability match both the pipe diameter and the pitch of your roof. These are typically flexible or been available in fixed pitch increments, so measure your roofing system incline along with the pipe size prior to purchasing.
Don't Fail To Remember the Storm Collar and Flashing
Once you've matched the jack to your pipe size, you'll typically also need a storm collar, which fits snugly around the pipe just over the jack to maintain water from diminishing right into the wall surface or roofing tooth cavity. Storm collars are sized to the exact same pipe diameter as the jack itself, so if you're buying a 6 inch jack, obtain a 6 inch tornado collar to match.
Quick Sizing List
Prior to you order, run through this short list.
Measure the outside diameter of your actual cooktop pipeline, not the oven's firebox opening. Verify whether you need single-wall or double-wall (insulated) clearance specs. Examine the total impact of the jack against your offered wall, roof, or outdoor tents panel room. Suit the storm collar size to the pipeline size also. If you're roofing, measure your roof covering pitch for a tilted jack.
The Bottom Line
Range jack sizing comes down to one core regulation: match the internal collar to your stovepipe diameter, then make sure the bordering product and clearances satisfy the needs for whatever surface you're going through, whether that's canvas, timber framing, or a metal roof covering. When in doubt, determine two times, examine your stove's handbook for specific clearance needs, and choose a jack rated for your certain pipeline size instead of estimating.
