What Size Cooktop Jack Do You Need?
If you're installing a wood stove, chef stove, or flue through a wall surface, ceiling, or tent, among the first concerns you'll run into is what size cooktop jack to purchase. Get it incorrect and you're taking a look at a fire threat, a smoky mess, or a return journey to the hardware shop. Get it right and the setup fasts, risk-free, and code-compliant. Here's exactly how to identify the appropriate dimension for your setup.
Begin With Your Stove Pipe Size
The single essential dimension is the outer size of your cooktop pipe or smokeshaft pipeline. Stove jacks are sized to match this pipeline, not the cooktop itself, so measure the pipeline that will in fact pass through the jack as opposed to guessing 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 utilize 7 or 8 inch pipeline. Canvas wall camping tents and warm tents usually use 4 to 6 inch stovepipe, given that the ovens involved are tiny and portable. Always gauge your actual pipeline with a tape measure rather than relying on the range's listed specs, given that manufacturers in some cases round or utilize a little various pipeline standards.
Match the Jack to the Pipe, Not the Hole
An oven jack isn't simply a hole cutter; it's a heat-shielding collar that maintains combustible product away from the warm pipe. The majority of jacks are developed with an internal collar sized to the pipe size and an outer flange that extends several added inches on all sides. This gap is willful. It creates the clearance-to-combustibles that structure and fire codes require, so an oven jack is always mosting likely to look larger than the pipe alone.
As an example, a jack built for 6 inch pipeline might have a general footprint of 12 to 14 inches across, despite the fact that the collar opening itself is 6 inches. When shopping, examine both numbers: the collar size, which need to match your pipeline precisely, and the total jack dimensions, which need to fit sustainable bag the wall surface or roofing system area you have available.
Think about the Product You're Cutting Into
The right oven jack dimension can also depend upon what surface area it's going through.
Canvas or Textile (Tents)
For wall outdoors tents and hot camping tents, stove jacks are typically a fire resistant silicone-coated fiberglass patch sewn or grommeted right into the canvas. These are sized virtually exactly to the stovepipe diameter with simply an inch or 2 of margin, because the bordering textile currently provides versatility. A 5 inch stovepipe commonly pairs with a jack rated for 5 inches, often detailed as "4.5 to 5 inch" to accommodate small pipe variant.
Timber Framework (Cabins and Homes)
For a wall or roofing constructed from wood framing, you'll want a stiff, shielded pipeline support or thimble along with a jack that supplies at the very least 2 inches of clearance from the pipeline to any kind of combustible framing member, though lots of codes and oven suppliers ask for more. Always check your particular oven's guidebook and neighborhood building code, since required clearances vary based on whether the pipe is single-wall or double-wall protected.
Steel Roof
Roof-mounted oven jacks (occasionally called roof covering blinking or a roof jack) need to match both the pipe diameter and the pitch of your roof covering. These are usually adjustable or can be found in taken care of pitch increments, so measure your roof incline in addition to the pipeline size before buying.
Don't Neglect the Tornado Collar and Flashing
As soon as you've matched the jack to your pipe dimension, you'll usually additionally need a tornado collar, which fits comfortably around the pipe simply above the jack to maintain water from running down right into the wall or roof tooth cavity. 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 Checklist
Prior to you order, run through this list.
Step the outdoors diameter of your real range pipeline, not the range's firebox opening. Validate whether you need single-wall or double-wall (shielded) clearance specs. Examine the general impact of the jack against your readily available wall, roof covering, or camping tent panel room. Match the tornado collar size to the pipeline size also. If you're roofing, determine your roof pitch for a tilted jack.
All-time Low Line
Oven jack sizing comes down to one core policy: match the inner collar to your stovepipe diameter, then make certain the surrounding product and clearances meet the needs for whatever surface you're passing through, whether that's canvas, wood framework, or a metal roofing. When in doubt, determine two times, check your oven's manual for precise clearance requirements, and select a jack rated for your certain pipeline size as opposed to approximating.
