DuraVent DuraPlus Through the Ceiling Kit: the surrounding parts, with chimney lengths sold separately
The DuraVent DuraPlus Through the Ceiling Kit is a 6 inch kit for venting a stove upward through a flat or vaulted ceiling. It includes stovepipe adapters, a square ceiling support box with trim, roof flashing, a storm collar, and a chimney cap. The flashing seals the roof opening and fits flat roofs through 6/12, meaning 6 inches of rise over 12 inches of run. Steeper roofs need different flashing. DuraPlus is DuraVent’s triple wall chimney, the insulated pipe that takes over from the stovepipe at the ceiling or wall and runs up past the roof.
Chimney lengths and stovepipe are separate purchases. The chimney adapter joins double wall DVL or single wall DuraBlack stovepipe to the support box. The included snap lock adapter handles another maker’s snap lock stovepipe. A straight chimney needs at least 10 to 15 feet above the stove outlet. Its cap must reach 3 feet above the roof opening and 2 feet above anything within 10 feet. Need the lengths for your run? Add DuraVent DuraPlus Chimney Pipe lengths. The DuraVent DuraPlus Through the Ceiling Kit ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 6DP-KTUP
Applications
DuraPlus Chimney is a triple-wall, all-fuel chimney for use with wood stoves, fireplaces, furnaces, boilers, stoves, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas.
Materials and Construction
.016″ 430 stainless steel outer wall or .018″ galvanized steel outer wall.
.018″ aluminized steel intermediate liner.
.016″ 430 stainless steel inner liner.
Insulated layers of ceramic blanket plus ventilated air space. Locks tightly with a precision twist-lock connection.
Clearances
2″ clearance to combustibles.
Diameters
6″-8″
Listings
UL Listed to UL 103HT (MH7399).
FAQ
What comes in the DuraPlus Through the Ceiling Kit, and is the chimney pipe included?
The 6DP-KTUP kit supplies the parts around the pipe, not the pipe itself: a DVL/DuraBlack Chimney Adapter, a Snap-Lock Adapter with Trim, a 24-inch Square Ceiling Support Box with insulation collar and trim, an adjustable 0/12 to 6/12 flashing, a storm collar and the chimney cap. You add the DuraPlus 6-inch chimney lengths and the stovepipe separately.
Which stoves and ceilings can I use this kit with?
It is a 6-inch-only, through-the-roof kit for flat or vaulted ceilings. DuraPlus is a triple-wall, all-fuel chimney listed to UL 103HT for wood, oil, coal and gas appliances such as stoves, fireplaces and furnaces. Match the 6-inch chimney to a 6-inch appliance flue outlet; never use a chimney smaller than the outlet, which hurts draft and builds creosote.
How much DuraPlus pipe do I need to add for a through-the-ceiling install?
Measure from the support box to the cap. A straight vertical chimney needs at least 10 to 15 feet above the appliance outlet at sea level, and the cap must sit 3 feet above the roof penetration and 2 feet above anything within 10 feet. Subtract 1-1/2 inches per joint. If the chimney rises more than 4 feet above the roof, add an Extended Roof Bracket; the support box carries up to 35 feet of pipe.
How does my stovepipe connect to the ceiling support box?
Two adapters are in the box. The stainless DVL/DuraBlack Chimney Adapter locks DuraVent DVL or DuraBlack stovepipe to the support box, and the Snap-Lock Adapter with Trim handles generic snap-lock black pipe. The stovepipe itself is a separate purchase; DuraVent’s DuraBlack single-wall kit or the DVL close-clearance kit both pair with this support box.
What clearance does DuraPlus need, and what goes in the attic?
DuraPlus is listed for 2 inches of air space to combustibles, and the support box must be framed on all four sides. Where the chimney passes through an attic you need an Attic Insulation Shield (sold separately) unless the pipe is enclosed in a chase, and a Firestop Radiation Shield wherever it passes a floor or ceiling without a support box.
Does the flashing fit my roof, and do the joints need screws or sealant?
The included adjustable flashing covers flat to 6/12 pitches; a steeper roof needs the matching DuraPlus flashing instead. Chimney sections twist-lock together, so screws are optional and no joint sealant is required; just never let a screw penetrate the inner liner. Use a non-hardening waterproof sealant where the flashing meets the roof and under the storm collar.