Building masonry or metal chimneys at the proper height avoids potential fire hazards and saves you money in the long run. Modern UK residences with chimneys must meet fire prevention standards, including chimney heights. UK cities and towns follow fire prevention standards set by the Fire Protection Association. Contact your local fire office or building code official for information on chimney height standards or hire us, as trustworthy builders in London, we can inform you off all legalities when it comes to building a chimney.
BFCMA provides a standard for chimney stacks attached to a house. For fire safety, the minimum height of chimneys must be greater than three feet above the point where the stack emerges from the roofline. Not all local municipalities adhere the BFCMA’s recommendations, and may have their own chimney height standards.
A chimney’s minimum height changes if a house has an air intake on its roof. Air intakes are filters that allow outdoor air to enter the house; intakes prevent debris from entering the house. According to OSHA, chimney stacks must be at least 10 feet taller than an air intake system or roof line within 50 feet of the chimney. The chimney’s top must be 10 feet taller than whatever object, roof line or air intake has a higher elevation.
If a chimney is too short, homeowners may experience some challenges from their chimney’s faulty design. For instance, short chimneys do not vent as efficiently as properly built chimneys and are possible fire hazards. Also, faulty venting results in filling up your room with smoke and long-term damage to the chimney’s flue stack and chimney cap.