How to Install a Wood Stove Pipe Kit Through the Wall | Plan

A through-wall wood stove pipe kit installs in this order: interior connector, wall thimble, exterior tee, vertical strapped chimney.

Past that, the sequence for how to install a wood stove pipe kit through the wall holds steady across brands — the parts go together in one order, and only the dimensions change.

Four things decide what you buy: flue diameter, wall construction, chimney height, and clearance to combustibles. Settle those first and the rest is mechanical work.

Wood Stove Pipe Through The Wall: Parts That Must Match

Every listed part has to come from one compatible chimney system, because mixing brands voids the listing. DuraPlus is the triple-wall, all-fuel chimney; DuraTech is double-wall and comes in 5 to 8 inch diameters. Both through-wall setups need a wall thimble, a tee with cap, a tee support, and wall straps.

Match the chimney and connector diameter to the stove’s flue outlet unless the stove manufacturer’s manual permits otherwise. Walk the route before ordering: whether it crosses an attic or an occupied room changes the shields and enclosure parts you need.

How Do You Connect The Stove To The Thimble?

1. Set the stove. Position it per its own manual. The wall opening centers on the stove’s flue collar.
2. Fit the telescopic length over the collar and drive three metal screws through it. Add the 90-degree elbow, then adjust the telescopic length to reach the wall.
3. Run the horizontal connector between elbow and chimney, slide the decorative collar on, and secure the connector to the flue extension with three screws.
4. Cut and frame the opening.
5. Install the wall thimble from inside the room, lining its nail holes up with the framing. Seated correctly, its flange sits flush with the finished wall.

Diameter, wall thickness, and brand all change what’s in the box, so it pays to compare the wood stove pipe kits through the wall that ship as a complete set before you commit to a system.

Getting The Exterior Chimney Height And Clearances Right

The exterior run needs at least 2 inches of air space from combustible material, a top at least 3 feet above the roof penetration, and a top at least 2 feet above anything within 10 feet of the chimney.

Wall straps carry that height. DuraTech’s installation instructions specify straps at least every 8 feet; the DuraPlus instructions call for one every 4 feet of chimney height. Use the manual for the product you bought.

• Never bury or compress the air space around insulated chimney with insulation or framing.
• An attic insulation shield is required where the run crosses an attic, insulated or not.
• A firestop radiation shield is required where the chimney passes a floor or ceiling without a support box.
• A short, poorly braced exterior chimney drafts badly and can fail code.

Enclose chimney sections that pass through occupied areas using the manufacturer’s ventilated enclosure details — the enclosure keeps the clearance intact, not the drywall.

Finish with the listed cap, verify every joint and strap, and book the inspection before the first burn. Re-measure the 2 inch gap last, once the wall is closed and nothing has shifted — a major cause of vent fires is clearance that quietly disappeared behind new finishes.