Chimney 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, roofs 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!
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I had used A to Z several years ago to have sun screens installed on our home and had a great experience, so it was only natural that I’d call them back to clean our dryer vent when my dryer started taking a long time to dry our clothes.
All I can say is WOW! The hair stood up on the back of my neck when I saw how much lint they extracted from my vent! Can you say MAJOR FIRE HAZARD? Needless to say, we’ll be having A to Z back out a lot more often to make sure it never gets this dirty again!
~ Vince Ciaraglia, Roseville, CA
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