Comments: Double wall pipe will suffice for most installations. If your chimney will be enclosed within the interior space of the house or if you install the piping within a well insulated chase on the exterior wall, double wall piping will be adequate. Triple wall pipe will be needed for installations in an uninsulated chase or in an installation where the chimney will be exposed to the elements.

Comments: Depending upon the manufacturer of your appliance, you may be able to use air-cooled chimney pipe, insulated chimney pipe, or both. Air cooled chimney pipe uses an air space that circulates cool air from the outdoors to maintain safe operating temperatures. Insulated chimney pipe uses a refractory blanket of insulated material to keep the outer wall of the pipe cooler. You can find the information regarding what types are acceptable for use in your owner's manual for the appliance. If you are unable to determine what type of chimney pipe is needed, we can determine it for you - just mark "Unsure" as the answer to this question.

Comments: Full stainless pipe offers greater durability, however galvanized/stainless pipe is more cost efficient.

Comments: Please factor the total height from the homes floor and include any additional height added by a hearth or any mount that the fireplace is attached to.

Comments: If you will not be venting through a second story, please put N/A as the answer to this question.

Comments: Please factor in the height of the ceiling joists with the measurement.

- Comments: Roof pitch is defined as the number of inches of rise per foot of horizontal run. In order to determine your roof pitch, you will need to measure one of the two following ways:

• Measuring from the Top (see image below) - The measurements are taken from on top of the roof. Simply mark a level at 12", hold it perfectly level and measure from the roof surface to your 12" mark, this will give you the rise. Be careful with this method as a roof with many layers of shingles, or any type of roofing that is irregular can give you less than precise results.
• Measuring from the Bottom (see image below) - The measurements are taken from the bottom of the rafters, the procedure to calculate roof pitch is the same. This method tends to be more accurate because no layers of roofing are involved. To use this method there are 3 possible places to take your measurements. 1. The underside of a barge rafter on a gable end. 2. The underside of a rafter on a overhang at the bottom of the roof 3. The underside of a rafter in the attic.

Example:


Because this roof has a rise of 7 inches when measured up from the 12 inch horizontal run, it is said to have a 7/12 pitch.

- Comments: Offsets are required if there are any obstructions within a 10 foot diameter (horizontally) of the chimney pipe above the roof. Potential obstructions to chimney installation may include: A steeply pitched roof, a second story wall on a multi-tiered home, or a neighboring home.

Comments: In order to determine distance to an obstruction, it will be necessary to stand at the point where the intended chimney pipe will penetrate the roof decking, measure 3 feet vertically from the roof decking, and measure horizontally in all directions from this 3 foot vertical point. If there are not any obstructions within a 10 foot diameter, please put N/A as the answer to this question.

Comments: In order to determine the proper size needed, measure across the flue opening from side to side. This will determine what size piping you need. An alternate method would be to reference the owner's manual for the appliance. The manual will cover not only the size needed, but compatible brands of piping.

Comments: Single wall stove pipe offers greater radiant heat into the room, but will stay warm/hot to the touch and is not as strong as other pipe. Double wall pipe is stronger and insulates better, but does not offer a radiant heat source. It will stay cooler than single wall. Double wall pipe is generally twice the cost of single wall pipe, due to the increased material used in construction.

Comments: The vent opening on most modern stoves will be round, however some older models used an oval or rectangular opening.

Comments: Please factor the total height from the homes floor and include any additional height added by a hearth or any platform that the stove is mounted on.

- Comments: Common diameters of piping for direct vent gas inserts are 4" inner pipe by 6 5/8" outer pipe, 4" inner pipe by 7" outer pipe, and 5" inner pipe by 8" outer pipe. Some direct vent units may use two small vent hoses for operation - they are usually 3" or 4" in diameter. Your appliance is a direct vent unit if it has a sealed glass window that is not able to be opened. B-vent units commonly use piping that is 3", 4", 5" or 6". B-vent units are open to the room and will only have a single collar for venting the unit.

Comments: Please factor the total height from the homes floor and include any additional height added by a hearth or any platform that the stove is mounted on.

Comments: If the insert is convertible between one and the other, please provide the venting option you plan on using.

- Comments: Common diameters of piping for direct vent gas stoves are 4" inner pipe by 6 5/8" outer pipe, 4" inner pipe by 7" outer pipe, and 5" inner pipe by 8" outer pipe. Your stove is a direct vent unit if it has a sealed glass window that is not able to be opened. B-vent units commonly use piping that is 3", 4", 5" or 6". B-vent units are open to the room and will only have a single collar for venting the unit.

Comments: The vent opening on most modern stoves will be round, however some older models used an oval or rectangular opening.

Comments: Please factor the total height from the homes floor and include any additional height added by a hearth or any platform that the stove is mounted on.