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Building Energy Code Requirements . Presented by: The leader in metal building insulation . North Carolina ASHRAE 90.1 2004. ASHRAE 90.1 2004 .
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Building Energy Code Requirements Presented by: The leader in metal building insulation
ASHRAE 90.1 2004 Commercial Code: State-developed code based on the 2003 IECC and references the ASHRAE 90.1-2004. The 2004 Supplement to the IECC is referenced in various sections of the 2006 NC Amendments. Mandatory statewide; can use COMcheck-EZ to show compliance
ASHRAE 90.1 2004North Carolina • Heated (condition buildings) • Roofs and Ceilings: U value of .065 • Walls: U value of .113 • In “R” value terms it means the following: • Roofs and Ceilings: In place R-15.3 • Walls: In place R-9
Insulation compression and reduction of R-Values A loss in R-Value occurs when the insulation is compressed between the roof and walls structurals and the exterior metal skin.
Metal Building Roof Requirements Conditioned Building In order to achieve a U-Value of .065 (in place R-15.3) in the roof the following is required • 6” of R-19 metal building fiberglass insulation • Thermal Blocks – are required • This will achieve an in place R-value of R-15.4
Metal Building Wall Requirements Conditioned Building In order to achieve a U-Value of .113 (in place R-8.9) in the walls the following is required • 4” of R-13 metal building fiberglass insulation • Thermal Blocks – not required • This assembly will achieve an in-place R-Value of R-8.9
ASHRAE 90.1 2004North Carolina • Semi-Heated • Roofs and Ceilings: U value of .097 • Walls: U value of .134 • In “R” value terms it means the following: • Roofs and Ceilings: In place R-10.3 • Walls: In place R-7.5
Metal Building Roof Requirements Semi-Heated Building In order to achieve a U-Value of .097 (in place R-10.3) in the roof the following is required • 6” Thick of R-19 metal building fiberglass insulation w/o thermal blocks (achieves an in place R-value of R-10.2) or • Standing Seam Roof: 3” Thick of R-10 metal building fiberglass insulation with thermal blocks (achieves an in place R-value of R-10.3)
Metal Building Wall Requirements Semi-Heated Building In order to achieve a U-Value of .134 (in place R-7.5) in the walls the following is required • 3” of R-10 metal building fiberglass insulation • Thermal Blocks – not required • This assembly will achieve an in-place R-Value of R-7
Summary If you have any questions you can consult your local building code official.