What Dimension Cooktop Jack Do You Need?
If you're setting up a wood stove, chef oven, or flue pipe with a wall, ceiling, or camping tent, one of the very first questions you'll encounter is what dimension range jack to acquire. Get it wrong and you're looking at a fire danger, a great smoky mess, or a return trip to the equipment shop. Get it ideal and the installment fasts, risk-free, and code-compliant. Here's exactly how to figure out the right dimension for your configuration.
Beginning With Your Range Pipeline Size
The single crucial measurement is the external size of your range pipeline or chimney pipe. Oven jacks are sized to match this pipe, not the range itself, so gauge the pipe that will really travel through the jack rather than thinking based upon the stove's firebox dimension.
Common property and cabin stove pipelines run 4, 5, or 6 inches in size, while larger wood stoves and some outside timber furnaces utilize 7 or 8 inch pipeline. Canvas wall camping tents and warm tents normally use 4 to 6 inch stovepipe, considering that the cooktops involved are small and mobile. Constantly gauge your actual pipe with a measuring tape as opposed to trusting the range's provided specifications, because makers sometimes round or make use of slightly various pipeline criteria.
Suit the Jack to the Pipe, Not the Hole
A range jack isn't simply an opening cutter; it's a heat-shielding collar that maintains combustible material away from the warm pipeline. The majority of jacks are built with an internal collar sized to the pipe diameter and an outer flange that covers numerous added inches on all sides. This gap is intentional. It produces the clearance-to-combustibles that structure and fire codes call for, so a range jack is always mosting likely to look larger than the pipe alone.
As an example, a jack built for 6 inch pipe may have a general footprint of 12 to 14 inches throughout, although the collar opening itself is 6 inches. When buying, examine both numbers: the collar size, which must match your pipeline specifically, and the overall jack dimensions, which require to fit the wall or roofing room you have available.
Consider the Material You're Cutting Into
The best oven jack dimension can also depend on what surface area it's passing through.
Canvas or Fabric (Tents)
For wall camping tents and hot camping tents, cooktop jacks are normally a fire resistant silicone-coated fiberglass spot stitched family tent or grommeted right into the canvas. These are sized virtually exactly to the stovepipe diameter with just an inch or two of margin, considering that the surrounding textile already offers flexibility. A 5 inch stovepipe typically pairs with a jack rated for 5 inches, occasionally provided as "4.5 to 5 inch" to suit mild pipeline variant.
Timber Framing (Cabins and Homes)
For a wall or roof covering constructed from timber framing, you'll want an inflexible, shielded pipeline assistance or thimble together with a jack that supplies at the very least 2 inches of clearance from the pipeline to any kind of combustible framing member, though many codes and cooktop suppliers ask for more. Always examine your details oven's manual and neighborhood building ordinance, considering that required clearances differ based upon whether the pipe is single-wall or double-wall shielded.
Metal Roofing
Roof-mounted cooktop jacks (in some cases called roofing system flashing or a roofing jack) require to match both the pipe diameter and the pitch of your roof. These are typically flexible or been available in fixed pitch increments, so gauge your roofing slope in addition to the pipeline size prior to buying.
Do Not Fail To Remember the Tornado Collar and Flashing
As soon as you've matched the jack to your pipeline dimension, you'll typically also need a storm collar, which fits snugly around the pipeline simply above the jack to keep water from running down right into the wall surface or roofing system dental caries. Storm collars are sized to the very same pipeline diameter as the jack itself, so if you're purchasing a 6 inch jack, get a 6 inch tornado collar to match.
Quick Sizing List
Before you order, run through this list.
Procedure the outside diameter of your actual oven pipe, not the cooktop's firebox opening. Verify whether you require single-wall or double-wall (protected) clearance specs. Inspect the overall impact of the jack against your offered wall, roof, or outdoor tents panel area. Suit the tornado collar size to the pipeline size as well. If you're roofing, gauge your roofing system pitch for a tilted jack.
The Bottom Line
Cooktop jack sizing comes down to one core regulation: match the inner collar to your stovepipe size, then see to it the surrounding product and clearances satisfy the needs for whatever surface you're travelling through, whether that's canvas, wood framework, or a metal roof covering. When in doubt, gauge twice, inspect your stove's handbook for specific clearance requirements, and select a jack ranked for your particular pipe size as opposed to approximating.
