The minimum thickness of hearth extensions shall be 2 inches 51 mm. In the united states and referring to the icc a widely used model building code the code specifies a 16 hearth extension to front of the fireplace for fireplaces 6 sq ft.
1 except as required in sentence 2 fireplaces shall have a non combustible hearth extending not less than.
Fireplace hearth extension code requirements. Hearth extensions shall extend at least 16 inches 406 mm in front of and at least 8 inches 203 mm beyond each side of the fireplace opening. Section r1001 9 2 of the 2015 minnesota residential code says the following. The hearth extension is the non combustible material found in front of a fireplace.
R1001 9 2 hearth extension thickness. The minimum thickness of hearth extensions shall be 2 inches 51 mm. International building code 2111 10.
Requirements of clauses 5 3 6 5 to 5 3 6 7 of can csa a405 design and construction of masonry. To call the hearth extension a hearth is common with many inspectors but it is incorrect. Hearth extensions will need to be at least 2 inches thick.
Alberta building code fireplace hearth. Your fireplace hearth must extend at least 16 inches beyond the fireplace opening and at least 8 inches on either side of the firebox according to the international code council. I turned to the actual minnesota building code requirements for fireplace hearth extensions and that s where i found my answer.
Both should be inspected. The hearth is the floor located within the firebox whether wood burning or gas. I turned to the actual minnesota building code requirements for fireplace hearth extensions and that s where i found my answer.
A hearth s extension also provides a suitable and flat area for which a fire guard can be placed in order to protect both users of the fireplace and furniture of the room from any hot embers that are released by the fire and to help prevent young children and pets from getting near the fire. Icc digital codes is the largest provider of model codes custom codes and standards used worldwide to construct safe sustainable affordable and resilient structures. Of opening size and 20 hearth extension to front of fireplace for fireplaces or larger than 6 sq.
Where the bottom of the firebox opening is raised not less than 8 inches 203 mm above the top of the hearth extension a hearth extension of not less than 3 8 inch thick 10 mm brick concrete stone tile or other approved noncombustible material is permitted. Section r1001 9 2 of the 2015 minnesota residential code says the following. The minimum thickness of hearth extensions shall be 2 inches 51 mm.
As a matter of terminology. R1001 9 2 hearth extension thickness.