Is there a code requirement for residential boiler piping insulation?
Genmech
| Posted in Building Code Questions on
Is there a code requirement for residential boiler piping insulation?
If so, what is the R-value for pipes in conditioned space? And unconditioned space?
We live near Baltimore, MD.
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Replies
Brantley,
According to Table 503.2.8 in the 2009 IRC, the minimum thickness of the pipe insulation is 1.5 inch for pipes with a diameter of 1.5 inch or less. Larger diameter pipe require thicker insulation, as shown in the table.
Other code provisions require pipe insulation with a minimum R-value of R-3.
No matter what these online resources say -- and no matter what advice I give you -- the final arbiter on these issues is your local code official. When in doubt, call up your local building office.