What Size Cooktop 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 concerns you'll encounter is what size oven jack to purchase. Get it wrong and you're looking at a fire threat, a smoky mess, or a return journey to the hardware shop. Get it right and the installment is quick, risk-free, and code-compliant. Below's exactly how to identify the appropriate dimension for your setup.
Begin With Your Stove Pipe Size
The single essential dimension is the outer diameter of your cooktop pipe or smokeshaft pipeline. Range jacks are sized to match this pipeline, not the stove itself, so determine the pipeline that will actually travel through the jack rather than thinking based upon the oven's firebox size.
Typical residential and cabin range pipelines run 4, 5, or 6 inches in size, while bigger wood stoves and some outside timber heaters make use of 7 or 8 inch pipeline. Canvas wall tents and warm camping tents generally make use of 4 to 6 inch stovepipe, considering that the ranges entailed are little and portable. Constantly determine your actual pipeline with a tape measure as opposed to trusting the stove's detailed specs, since suppliers often round or utilize a little different pipeline requirements.
Match the Jack to the Pipeline, Not the Hole
A stove 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.
For instance, a jack constructed for 6 inch pipe could have an overall impact of 12 to 14 inches across, although the collar opening itself is 6 inches. When shopping, inspect both numbers: the collar dimension, which should match your pipeline exactly, and the general jack measurements, which need to fit the wall surface or roof area you have readily available.
Consider the Product You're Cutting Into
The appropriate range jack dimension can also depend upon what surface area it's passing through.
Canvas or Material (Outdoors Tents)
For wall camping tents and warm tents, range jacks are generally a fireproof silicone-coated fiberglass patch stitched or grommeted right into the canvas. These are sized almost precisely to the stovepipe size with just an inch or two of margin, considering that the bordering fabric already supplies adaptability. A 5 inch stovepipe generally couple with a jack ranked for 5 inches, sometimes noted as "4.5 to 5 inch" to fit mild pipeline variation.
Wood Framing (Cabins and Residences)
For a wall surface or roof made from wood framework, you'll desire an inflexible, insulated pipe support or thimble together with a jack that gives at the very least 2 inches of clearance from the pipe to any combustible mounting participant, eco-friendly bag though several codes and cooktop manufacturers call for more. Always inspect your certain cooktop's guidebook and local building code, because needed clearances differ based upon whether the pipeline is single-wall or double-wall shielded.
Steel Roof covering
Roof-mounted cooktop jacks (occasionally called roof flashing or a roofing system jack) need to match both the pipe diameter and the pitch of your roofing system. These are usually flexible or been available in taken care of pitch increments, so gauge your roofing incline along with the pipeline size before purchasing.
Don't Fail To Remember the Storm Collar and Flashing
Once you've matched the jack to your pipe size, you'll usually also require a tornado collar, which fits well around the pipeline simply above the jack to keep water from running down into the wall or roof dental caries. Tornado 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 storm collar to match.
Quick Sizing List
Prior to you order, gone through this list.
Procedure the outside size of your actual oven pipe, not the oven's firebox opening. Confirm whether you require single-wall or double-wall (insulated) clearance specifications. Check the total footprint of the jack versus your available wall surface, roof, or camping tent panel space. Suit the tornado collar size to the pipeline diameter too. If you're roofing, gauge your roof pitch for a tilted jack.
The Bottom Line
Range jack sizing boils down to one core guideline: match the internal collar to your stovepipe diameter, after that make sure the surrounding product and clearances meet the needs for whatever surface you're going through, whether that's canvas, timber framing, or a steel roof. When unsure, gauge twice, inspect your cooktop's manual for specific clearance requirements, and select a jack ranked for your specific pipe dimension rather than approximating.
