Installation guide

Pompeii Oven Instructions

12.2. Simpson DuraTech chimney system.

Chimney Height and Size

Flue sizing depends on such local conditions as prevailing

wind, height of chimney, proximity of taller, nearby

structures, etc. A good rule of thumb is to choose a flue

that has an area of about 3-4 times the door height.

Depending on what is nearby, you may need a taller

chimney. One option is to test your oven after it has cured

with a single section of chimney pipe to see how well it

draws. If it is not enough, you can add another section to

extend it

Spark Arrestor/Chimney Caps

Use a spark arrestor chimney cap. It uses heavy gauge

steel and is similar in style to a window screen. Its purpose

is to trap burning embers that may float up the chimney

and stop them there. Once the fuel of the ember has been

used, its temperature will decrease and the by-product will

be a small amount of ash. A chimney cap will also keep

rain from pouring down the flue. There are many styles,

ranging from a plain metal arrangement, to whimsical

ceramic gargoyles.

The Simpson DuraTech chimney system contains a UL-

approved chimney cap.

12.3. Simpson Spark Arrestor.