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. Mantel corbels and brackets attached along the sides of the opening must have additional clearance if they project more than 1 1/2 inches out from the face of the fireplace. The airspace shall not be filled, except to provide fireblocking in accordance with Section R1001.12. Code: R1001.15 Chimney Clearances. Building Materials. So a mantel 6 inches deep, would be attached 18 inches . A mantel must be at least 6 inches from the fireplace opening. Chimneys located entirely outside the exterior walls of the building, including chimneys that pass through the soffit . 9.21. for each 1-in. Code: R1001.15 Chimney Clearances. a) 50 mm for interior chimneys, and. Minimum distance between bottom of mantel and top of firebox (in inches) = Mantel projection from wall (in inches) / 0.125. 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. 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. NFPA Code. Call them and ask to speak with a building . Masonry & Concrete Chimneys and Flues 9.21.2. Where the fireplace opening is less than 6 sq.ft. As a general rule, the mantel is placed about 12 inches above 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. 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. 2016 NFPA 211 11.2.5.4 Clearance. of a fireplace opening shall not . Chimneys located entirely outside the exterior walls of the building, including chimneys that pass through the soffit . 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. The NFPA code states that any mantel must be at least 6 inches from the fireplace opening. The building codes will typically determine the height to place the mantel from the hearth, and the distance from the firebox. 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. 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. How Much Does It Cost To Run A Gas Fireplace In Ontario. Request a copy of the report. Shelf would be 6" deep at 13" above fireplace opening. A fireplace generates heat. The simple answer is that clearances are set by local building code, which is enforced by your local building department. 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. (12 x 1/8 = 1 ½ ) Some gas fireplaces allow you a small turndown to only 70 percent of full load (for a 30 000 Btu/h fireplace, this means being able to reduce gas consumption to 21 000 Btu/h). The Ontario Building Code | Clearances 8.2.1.4. 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. Building and Materials Evaluation Commission handbook. 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. 1) The clearance between masonry or concrete chimneys and combustible framing shall be not less than. 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. That's great for warmth, but you must make sure the materials surrounding your fireplace are not flammable. 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). After that there is no requirement. The RSS panels are intended for interior use as a wall finish, for fireplace mantels, shower and tub enclosures, waterfalls and entries in lobbies. National Standard Building Code: Combustible materials and trim must be at least 6 inches from the firebox opening. of a fireplace opening. To ensure maximum safety, check with your local and state building ordinances before mounting a mantel. In the absence of local codes, we suggest your installation clearances meet or exceed the National/Standard Building Codes or the National Fire Code. (2) Unless it can be shown to be unnecessary, where the percolation time is less than 10 minutes, the . I want to DIY a fireplace mantel shelf above my masonry fireplace. The information posted herein is intended for educational use only. 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. . Minister's rulings. 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 . Combustible materials within 12 in. All combustible mantel surrounds, and shelves must be kept at least 12 inches from the opening of your fireplace (top and . These codes state that for every 1/8 inch of protruding combustible material, you must add an additional inch of clearance. Associate 2007-756 January 2, 2008 PREFABRICATED STONE PANELS MANUFACTURED BY realstone SYSTEMS . Seems straightforward but I've seen . The ICC, though, suggests at least 12 inches. 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. from the fireplace opening if projecting more than 1-1/2 in. (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. From contributor J: The simple answer is that clearances are set by local building code, which is enforced by your local building department. 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. The extra clearance must match the measurement, in . Masonry & Concrete Chimneys and Flues. 2006 ONTARIO BUILDING CODE Prepared by: John Roberts, P. Eng. Fireplace Clearance Code R1003.11 Fireplace clearance. The Ontario Building Code (OBC) is similar to the National Building Code (NBC) of Canada, it has variations unique to that province. distance from such opening." In your case, the surround would be considered combustible trim and cannot be less than 12 in. The panels are also intended for . 16" from firebox opening all around. So in other words if my surround projected 1" from the brick face then I'd need to have a clearance of 8". R1003.11 Fireplace clearance. Fire 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. National Standard Building Code . Chimney Flues 9.21.3. . Combustible materials within 12 in. 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). When installing a mantel shelf, don't forget to account for any brackets or corbels when measuring for the appropriate clearance! (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. 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. Canadian Chimney. 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. 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 ICC, though, suggests at least 12 inches. The hearth must extend a minimum of 150mm either side of the opening and a minimum of 300mm in front of the opening. Fireplace Clearance. Clearance to the fireplace Opening. of a fireplace opening shall not project more than 1/8 in. Learn about our work to allow innovative materials and building design for projects and structures. 2114.3 MASONRY FIREPLACES 2114.36 Fireplace hearth extensions shall be of approved noncombustible materials for all fireplaces. The National Fire Protection Association (NFPA) has similar requirements as the 2009 IRC. 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. To request a copy of Minister's rulings, email us at codeinfo@ontario.ca. 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. 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. Hearth (floor) minimum 20" forward of firebox and 8" minimum out from sides of firebox. (See Appendix A) (2) A clearance of not less than 150 mm shall be provided between a cleanout opening and combustible material. Masonry-Built Fireplaces. (See Appendix A) (2) A clearance of not less than 150 mm shall be provided between a cleanout opening and combustible material. Building Materials Building and Materials Evaluation Commission handbook Plans must comply with the Ontario Building Code, local zoning bylaws, and other applicable laws and regulations. Chimney Lining 9.21.4. Masonry Fireplace Mantel Shelf Clearance. 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. 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. 16" from firebox opening all around. 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. (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 . 9.22.9.1. 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 . Masonry & Concrete Chimney Construction 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. Your firebox wall needs to be 8 inches thick when lined with fire bricks or 10 inches thick without fire bricks. Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. This should be way simpler than it has been. 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). 2114.3.10 all combustible mantels and similar trim shall … 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 . 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. 9.21. Minimum firebox clearances for noncombustibles. So in other words if my surround projected 1" from the brick face then I'd need to have a clearance of 8". Building Code For Fireplace Mantel Clearances. The airspace shall not be filled, except to provide fireblocking in accordance with Section R1001.12. b) 12 mm for exterior chimneys. Minimum firebox clearances for noncombustibles. (0.56m ), the hearth extension shall extend at least 16 inches (406mm) in front of the facing material and at least 8 inches (203mm) beyond each side of fireplace opening. Then adding an inch to the distance for every inch that the mantel protrudes. 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. National Standard Building Code Information. Fireplace mantel clearance. Hearth (floor) minimum 20" forward of firebox and 8" minimum out from sides of firebox.