Call them and ask to speak with a building . The Ontario Building Code (OBC) is similar to the National Building Code (NBC) of Canada, it has variations unique to that province. 16" from firebox opening all around. All combustible mantel surrounds, and shelves must be kept at least 12 inches from the opening of your fireplace (top and . Masonry Fireplace Mantel Shelf Clearance. 2114.3.10 all combustible mantels and similar trim shall … The ICC, though, suggests at least 12 inches. Hearth (floor) minimum 20" forward of firebox and 8" minimum out from sides of firebox. Fireplace mantel clearance. Request a copy of the report. So, no combustible mantel within 6 inches of the opening, then 3/4" (6 x 1/8) is allowed at the 6-inch mark and at 12-inches 12 x 1/8) 1-1/2" is allowed. The Ontario Building Code | Clearances 8.2.1.4. The manual for our gas fireplace explains that in terms of the requirements of a hearth: ' The appliance is designed for installation on to a non-combustible hearth of at least 300mm depth and of at least 12mm thick. 2114.3 MASONRY FIREPLACES 2114.36 Fireplace hearth extensions shall be of approved noncombustible materials for all fireplaces. Section 1001.11 of the IRC (2006 edition), Exception 4: "Exposed combustible mantels or trim may be placed directly on the masonry fireplace front surrounding the fireplace opening providing such combustible materials are not placed within 6 in. The National Fire Protection Association (NFPA) has similar requirements as the 2009 IRC. 9.22.9.1. The airspace shall not be filled, except to provide fireblocking in accordance with Section R1001.12. Chimneys located entirely outside the exterior walls of the building, including chimneys that pass through the soffit . Wood beams, joists, studs and other combustible material shall have a clearance of not less than 2 inches (51 mm) from the front faces and sides of masonry fireplaces and not less than 4 inches (102 mm) from the back faces of masonry fireplaces. Code: R1001.15 Chimney Clearances. Minimum firebox clearances for noncombustibles. Combustible materials within 12 in. a) 50 mm for interior chimneys, and. Building Materials. If the calculated minimum distance is less than six inches (15.24 cm), six inches must be used; the bottom of the mantel can be no closer than six inches from the firebox opening. of a fireplace opening. (1) Except as required in Sentence (2), fireplaces shall have a noncombustible hearth extending not less than 400 mm (15 3/4 in) in front of the fireplace opening measured from the facing, and not less than 200 mm (7 7/8 in) beyond each side of the fireplace opening. Fire safety during construction of 5 and 6 storey wood buildings This guideline outlines some of the best practices for fire safety during the construction of five and six storey buildings of predominantly wood (combustible) construction. for each 1-in. Any portion of a masonry chimney located in the interior of the building or within the exterior wall of the building shall have a minimumair space clearance to combustibles of 2 inches (51 mm). The way I read the code is that there needs to be at least 6" clearance from the firebox opening to the surround, and if less than 12", then it cannot project more than 1/8" for every 1" of clearance. distance from such opening." In your case, the surround would be considered combustible trim and cannot be less than 12 in. So a wooden mantel, for example, must not be close to the fireplace opening or firebox, which is the open space where your fire is lit. The extra clearance must match the measurement, in . Masonry & Concrete Chimneys and Flues. A fireplace generates heat. (See Appendix A) (2) A clearance of not less than 150 mm shall be provided between a cleanout opening and combustible material. Tel: (416) 964-9415 1-800-268-7070 Email: info@carsondunlop.com.The firm provides professional HOME INSPECTION SERVICES and also extensive HOME INSPECTION EDUCATION and home inspection-related PUBLICATIONS.Alan Carson is a past president of ASHI, the American Society of Home Inspectors. To ensure maximum safety, check with your local and state building ordinances before mounting a mantel. The airspace shall not be filled, except to provide fireblocking in accordance with Section R1001.12. Clearance to the fireplace Opening (1) Combustible material shall not be placed on or near the face of a fireplace within 150 mm of the fireplace opening, except that where the combustibl e material projects more than 38 mm out from the face of the fireplace above the opening, such material shall be at least 300 mm above the top of the opening. So in other words if my surround projected 1" from the brick face then I'd need to have a clearance of 8". Seems straightforward but I've seen . To request a copy of Minister's rulings, email us at codeinfo@ontario.ca. Building Code For Fireplace Mantel Clearances. Code: R1001.15 Chimney Clearances. In the absence of local codes, we suggest your installation clearances meet or exceed the National/Standard Building Codes or the National Fire Code. October 15, 2020; By admin Filed Under Fireplace; No Comments Fireplace construction mantel clearances mantels remodel diy chimney information canadian surround and building codes home improvement forum bc code on the an american dream brick custom clearance wood insert required inserts looking for a ilration ca jlc forums safety masonry versus . 16" from firebox opening all around. There are National Fire Codes that require all flammable materials to be at least 6" from the fireplace opening, and depending on the overhang and material of the mantel, that distance could be more. Clearance to the fireplace Opening. Chimney Flues 9.21.3. 2016 NFPA 211 11.2.5.4 Clearance. The hearth must extend a minimum of 150mm either side of the opening and a minimum of 300mm in front of the opening. Other models will allow you to go as low as 20 percent of full load (or down to 6000 Btu/h for a 30 000 Btu/h fireplace). Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. (1) Combustible material shall not be placed on or near the face of a fireplace within 150 mm of the fireplace opening, except that where the combustibl e material projects more than 38 mm out from the face of the fireplace above the opening, such material shall be at least 300 mm above the top of . Then adding an inch to the distance for every inch that the mantel protrudes. The simple answer is that clearances are set by local building code, which is enforced by your local building department. After that there is no requirement. Clearances (1) Unless it can be shown to be unnecessary, where the percolation time is 10 minutes or greater, the location of all components within a sewage system shall be in conformance with the clearances listed in Article 8.2.1.5. or 8.2.1.6. (2) Where the fire chamber floor is elevated more than 150 mm above the hearth, the dimension of the hearth measured perpendicular to the plane of the fireplace opening shall be increased by not less than, (a) 50 mm for an elevation above 150 mm and not more than 300 mm, and (b) an additional 25 mm for every 50 mm in elevation above 300 mm. The first Ontario Building Code was filed on November 24, 1975 and came into force on December 31, 1975 and superseded all municipal laws regarding design and construction of buildings. May 23, 2020; By admin Filed Under Fireplace; No Comments 4 reasons why gas fireplaces are less efficient and more costly than electric stylish fireplace installation cost 2020 dbs inc how much does a direct blog it to run toronto products installations repair service family all about of operating yearly calculator regency what install . 1) The clearance between masonry or concrete chimneys and combustible framing shall be not less than a) 50 mm for interior chimneys, and b) 12 mm for exterior chimneys. Building Materials Building and Materials Evaluation Commission handbook Please check the current Provincial Building Code, National Building Code, and your Local Authority Having Jurisdiction (AHJ) for applicable requirements, or consult with your qualified, local chimney sweep. The way I read the code is that there needs to be at least 6" clearance from the firebox opening to the surround, and if less than 12", then it cannot project more than 1/8" for every 1" of clearance. These codes state that for every 1/8 inch of protruding combustible material, you must add an additional inch of clearance. If your mantel extends more than an inch and a half out from the fireplace opening, you should have more than a 6-inch clearance. (12 x 1/8 = 1 ½ ) When installing a mantel shelf, don't forget to account for any brackets or corbels when measuring for the appropriate clearance! Masonry-Built Fireplaces. Chimney Lining 9.21.4. . 2006 ONTARIO BUILDING CODE Prepared by: John Roberts, P. Eng. Plans must comply with the Ontario Building Code, local zoning bylaws, and other applicable laws and regulations. The NFPA code states that any mantel must be at least 6 inches from the fireplace opening. R1003.11 Fireplace clearance. From contributor J: The simple answer is that clearances are set by local building code, which is enforced by your local building department. Any portion of a masonry chimney located in the interior of the building or within the exterior wall of the building shall have a minimumair space clearance to combustibles of 2 inches (51 mm). Associate 2007-756 January 2, 2008 PREFABRICATED STONE PANELS MANUFACTURED BY realstone SYSTEMS . The information posted herein is intended for educational use only. Shelf would be 6" deep at 13" above fireplace opening. Clearance to Fireplace Opening (1) Combustible material shall not be placed on or near the face of a fireplace within 150 mm (5 7/8 in) of the fireplace opening, except that where the combustible material projects more than 38 mm (1 1/2 in) out from the face of the fireplace above the opening, such material shall be at least 300 mm (11 3/4 in) above the top of the opening. National Standard Building Code: Combustible materials and trim must be at least 6 inches from the firebox opening. Canadian Chimney. All wood beams, joists, studs and other combustible material shall have a clearance of not less than 2 inches (51 mm) from the front faces and sides of masonry fireplaces and not less than 4 inches (102 mm) from the back faces of masonry fireplaces. Where the fireplace opening is less than 6 sq.ft. Masonry & Concrete Chimney Construction 1) The clearance between masonry or concrete chimneys and combustible framing shall be not less than. This should be way simpler than it has been. Parts of the mantel assembly located along the sides of the fireplace opening which project more than 1 1/2 inches (38mm) from the face of the fireplace . National Standard Building Code Information 2114.3 Masonry-built Fireplaces 4114.3.10 - All combustible mantels and similar trim shall be kept at least 6 inches from the fireplace opening. Building and Materials Evaluation Commission handbook. (See Appendix A) (2) A clearance of not less than 150 mm shall be provided between a cleanout opening and combustible material. NFPA Code. 2114.3.9 woodwork shall not be placed within 4 inches (102mm) of the back of the fireplace, but shall not prevent plastering directly on the masonry or metal lath and metal furring. Minimum distance between bottom of mantel and top of firebox (in inches) = Mantel projection from wall (in inches) / 0.125. Hearth (floor) minimum 20" forward of firebox and 8" minimum out from sides of firebox. National Standard Building Code . Code. Wood beams, joists, studs and other combustible material shall have a clearance of not less than 2 inches (51 mm) from the front faces and sides of masonry fireplaces and not less than 4 inches (102 mm) from the back faces of masonry fireplaces. Chimneys located entirely outside the exterior walls of the building, including chimneys that pass through the soffit . The RSS panels are intended for interior use as a wall finish, for fireplace mantels, shower and tub enclosures, waterfalls and entries in lobbies. of a fireplace opening shall not project more than 1/8 in. b) 12 mm for exterior chimneys. Fireplace Clearance. Fire Code. trimmers shall be not less than 6 inches (152mm) from the inside face of face of the nearest flue lining. All wood beams, joists, studs and other combustible material shall have a clearance of not less than 2 inches (51 mm) from the front faces and sides of masonry fireplaces and not less than 4 inches (102 mm) from the back faces of masonry fireplaces. The building codes will typically determine the height to place the mantel from the hearth, and the distance from the firebox. 9.21. A mantel must be at least 6 inches from the fireplace opening. . Combustible materials within 12 in. Please check the current Provincial Building Code, National Building Code, and your Local Authority Having Jurisdiction (AHJ) for applicable requirements, or consult with your qualified, local chimney sweep. As a general rule, the mantel is placed about 12 inches above the fireplace opening. Combustible material within 12 inches of the fireplace opening shall not project more than 1/8 inch for each 1-inch distance from such an opening. Your firebox wall needs to be 8 inches thick when lined with fire bricks or 10 inches thick without fire bricks. In addition, any combustible trim elements measuring at least 1 1/2 inches thick must be at least 12 inches from the fireplace opening which is equivalent to the IRC ruling which requires 1 inch of distance for every 1/8 inch of projection. Fireplace Clearance Code R1003.11 Fireplace clearance. 2114.3 Masonry-built Fireplaces 4114.3.10 - All combustible mantels and similar trim shall be kept at least 6 inches from the fireplace opening. However, state and local building codes and ordinances can vary from the IRC or may use standards from older versions of the same code.