Quick answer: A wood stove chimney needs connector pipe from the stove; a ceiling support box (ceiling route) or a wall thimble, tee and tee support (wall route); Class A chimney pipe to the finish height; roof flashing and a storm collar (ceiling route) or wall brackets (wall route); and a chimney cap. A Shasta Vent chimney kit bundles most of these, so you add pipe and the parts that depend on your house.
The most common install-day problem isn't a bad part. It's a missing one. Use this list before you order, and again when the boxes arrive.
Step 1: Take these six measurements
- Flue outlet size of your stove or appliance (6" or 8"). Never reduce.
- Route: through the ceiling and roof, or through the wall and up the outside.
- Finish height: at least 3 ft above where the chimney passes the roof, and 2 ft higher than anything within 10 ft.
- Roof pitch (ceiling route). See Chimney Flashing by Roof Pitch.
- Wall depth (wall route). The thimble fits walls up to 10" deep.
- Obstacles: eaves, rafters or upstairs rooms that would need an offset.
Step 2: Through-the-ceiling parts list
- Connector (stove) pipe from the stove to the ceiling, per your stove manual
- Ceiling support box — in the kit
- Attic insulation shield — in the kit
- Class A chimney pipe sections to the finish height
- Firestop radiation shield for each extra floor
- Roof flashing matched to your pitch
- Storm collar — in the kit
- Chimney cap with spark arrestor — in the kit
- Roof bracing, if the chimney rises more than 5 ft above the roof
- Elbow kit and elbow support, only if you need an offset
Get the kit: 6" Thru-the-Ceiling Kit · 8" Thru-the-Ceiling Kit. Full guide: 6" Thru-the-Ceiling Kit: What's Included.
Step 3: Through-the-wall parts list
- Connector (stove) pipe from the stove to the wall, per your stove manual
- Finishing collar — in the kit
- 8"-long Class A pipe section through the wall — in the kit
- Wall thimble — in the kit
- Tee with cleanout cap — in the kit
- Tee support — in the kit
- 2 adjustable wall brackets — in the kit (add one for every extra 10 ft of wall)
- Class A chimney pipe sections up the outside wall
- Chimney cap with spark arrestor — in the kit
- Elbow kit, if you need to clear an eave
- Roof bracing, if the chimney rises more than 5 ft above the roof
Get the kit: 6" Thru-the-Wall Kit · 8" Thru-the-Wall Kit. Full guide: 6" Thru-the-Wall Kit: What's Included.
Step 4: Count your pipe
Each section adds 1" less than its listed length (a 48" section adds 47"). The pipe can't be cut, so round up or use the adjustable section (11"–20"). Every joint gets a locking band. Full method: Class A Chimney Pipe Lengths.
Step 5: Double-check the rules
- 2" air space to every combustible, including insulation
- No more than 4 elbows, at 15° or 30° only, with every offset supported. See 15° vs 30° Elbow Kits.
- Up to 50 ft on one support box or tee support
- Wall brackets at least every 10 ft. They steady the chimney but don't carry its weight.
- The chimney ends vertical, with a cap
- Shasta Vent parts only. Don't mix brands.
Buyer's guides for every part
- 6" Thru-the-Wall Chimney Kit
- 6" Thru-the-Ceiling Chimney Kit
- Class A Chimney Pipe Lengths
- Chimney Flashing by Roof Pitch
- 15° vs 30° Chimney Elbow Kits
- 8" Class A Chimney Pipe: What to Order
- Shasta Vent Specs, Listing and Warranty
Frequently asked questions
What parts do I need to install a wood stove chimney? Connector pipe, a ceiling support box or wall thimble with tee, Class A chimney pipe, flashing and a storm collar (roof route) or wall brackets (wall route), and a chimney cap. The lists above break it down by route.
Is a chimney kit cheaper than buying parts one at a time? A kit groups the parts every install needs into one order, so nothing gets missed. Compare the kit price with the parts list on the product page.
What's the most commonly forgotten part? Usually the attic insulation shield, the right-pitch flashing, or enough pipe to meet the 3-2-10 height rule.
Ready to order?
Start with a complete chimney kit, then add Class A chimney pipe to reach your height. Shipping is free on orders over $75. Not sure what you need? Use our chimney planning guide.
Disclaimer: This article is for general information. Every installation is different. Always follow the Shasta Vent installation instructions, your appliance manufacturer's instructions and local building codes, and check with your local building official. We recommend a qualified professional installer.
