Page 11 - Green Builder Magazine June 2015 Issue
P. 11
SPECIAL SECTION
Design Conditions, Insulation Materials
An excerpt from ICC’s Energy Code Essentials: Based on the 2015 International Energy
Conservation Code®
Insulation Materials 49
DESIGN CONDITIONS Code
Essentials
Interior design temperatures are established in the code to properly
size heating and cooling mechanical equipment. The maximum design Section 1204.1 of the
temperature for heating equipment is 72 degrees. The minimum design International Building
temperature for cooling is 75 degrees. [Ref. C302.1] It is very impor- Code (IBC) and
tant to note that these criteria provide essential input for mechanical Section R303.9 of the
equipment design; however, they do not establish the interior comfort International Residential
or livability provisions addressed in other building codes. Code (IRC) establish
the minimum interior
INSULATION MATERIALS comfort temperature for
heating. G
Energy Code Essentials: Based Insulation materials used in the building thermal
on the 2015 International envelope must somehow be marked and identified
Energy Conservation Code® to confirm compliance with the approved plans.
uses a straightforward, focused [Ref. C303.1] Each piece of batt insulation 12 or
approach to introduce code more inches in width must be marked by the manu-
users to the new requirements. facturer (Figure 5-6).
Color illustrations and practical If the product is not stamped at the factory,
on-the-job scenarios allow the installer must provide a certificate listing the
readers to gain confidence insulation values and information for each area in
in their understanding of the which the unmarked insulation is installed in the
material. This publication may building thermal envelope. Blown or sprayed fiber-
be purchased by visiting the glass and cellulose wall insulation require certifica-
ICC online store at tion from the installer specifying thickness and FIGURE 5-6 Unfaced insulation marked on bag
www.iccsafe.org/GBessentials.
R-value details. Insulated siding shall have the R-value labeled on the You Should
product package (Figure 5-7). The certificate for sprayed polyurethane Know
foam (SPF) requires the R-value of the installed thickness of the foam
(Figure 5-8). In all cases, the installer must sign, date and post the certi- For fiberglass or cel-
fication at the job site. [Ref. C303.1.1] lulose blown-in or
sprayed insulation,
the certification must
include six character-
istics, one of which is
installed density. G
FIGURE 5-7 Insulated siding R-value label FIGURE 5-8 Measuring spray foam
