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5.4.1 states that where insulation is required, it must be labelled and
installed according to the requirements of 5.8.1.1 - 5.8.1.9. <br>
If insulation is required, the performance of the insulation must meet
the requirements of 5.5 or 5.6. Section 5.5 is prescriptive and you
must have the insulation levels specified in Tables 5.8.1.1-5.8..1.9 - as
a minimum. <br><br>
If the project doesn't meet the prescriptive requirements, you must meet
either the Section 5.6, the Building Trade-Off Option. <br><br>
Alternately, you may show compliance using the Energy Cost Budget Method,
Section 11 as long as Section 5.4 is met.<br><br>
In some jurisdictions, the building permit process requires showing
compliance with the prescriptive or building trade off method. I
always use the building trade off method using EnvStd as it is quicker
than filling in the prescriptive tables and EnvStd produces a nicely
formatted report gets quick approval from the building code
official.<br><br>
<br>
At 03:25 AM 07/02/2012, Ty Law wrote:<br>
<blockquote type=cite class=cite cite="">Hi Everyone,<br>
<br>
I am quite confused between what the ASHRAE 90.1 and the user’s manual
tell us about Building Envelope Mandatory Provisions:<br>
<br>
<b><i>5.4 Mandatory Provisions<br>
“5.4.1 Insulation.</b> Where insulation is required in Section<br>
5.5 or 5.6, it shall comply with the requirements found in Sections<br>
5.8.1.1 through 5.8.1.9.<b>”</b> - ASHRAE 90.1-2007<br>
<br>
</i> <br>
<b><i>Insulation (§ 5.8.1)<br>
“</b>The first set of mandatory requirements<br>
addresses the proper installation and<br>
protection of insulation materials. Issues<br>
that are covered include compression of<br>
insulation, installing insulation on sloping<br>
ceilings and around recessed equipment,<br>
and protecting insulation from physical or<br>
moisture damage.<b>”</b>- ASHRAE 90.1-2007-User’s Manual<br>
<br>
</i> <br>
Does this mean that we could use insulation that is not as efficient as
indicated in Table 5.5-1 through 5.5-8 as long as it complies with
Section 5.8.1.1 through 5.8.1.9?<br>
<br>
Your thoughts are highly appreciated.<br>
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<br>
Chris Jones<br>
14 Oneida Avenue<br>
Toronto, ON M5J 2E3.<br>
Tel. 416-203-7465<br>
Fax. 416-946-1005<br><br>
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