Height Violations: The 3’:2’:10’ Rule
For Safety purposes, building code requires that a chimney must meet the 3:2:10 requirement. The 3:2:10 requiremnt states that the chimney must terminate at least 3 feet above the highest point of the roof that it penetrates, and be at least 2 feet higher than anything within an imaginary 10’ horizontal radius encompassing the top of the chimney.
This requirement is primarily for two reasons:
1. To ensure nearby combustible objects are less likely to catch fire. Objects such as trees, roof gables, walls, etc. must all be kept at a respectable distance to prevent an unintentional fire.
2. To keep your fireplace from smoking into your home by trying to ensure the chimney will draft properly. If the top of your chimney is too close to an adjacent object such as a tree, wall, or nearby building, wind may create a high pressure plane that may push air down your chimney and force smoke into your home. In some situations, even though your chimney meets minimum height requirements, it may still need to be extended higher in order to draft properly.
If your chimney is not tall enough to meet minimum building code, A to Z is very experienced at extending chimneys to their proper heights. When it comes to your chimney’s safety and performance, A to Z goes to great “lengths” in ensuring your safety and comfort aren’t “short” changed!
A chase pan is like a roof over your prefabricated chimney and your chimney needs one to keep out water! Call on A to Z to make this and other needed repairs so you don’t have to worry.
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I just wanted to thank you for your expert advice at my last chimney cleaning. We were looking to purchase and install a new wood stove in order to keep our home warmer during the winter, and although it wasn’t directly related to having our chimney swept, your technician took a lot of time to go over several features and designs that were good, and told me several things to watch out for when purchasing a new wood stove.
Needless to say, I could tell this guy knew what he was talking about! It was nice getting an impartial opinion from someone who works with wood stoves all day long!
Suffice it to say that when our new wood stove is installed, we’ll continue to have A to Z out to clean it! You guys are awesome!
~ Allan Stuckin, Fair Oaks, CA
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