First Principles - Sustainable Design: The Science of Sustainability and Green Engineering - page 45

Table SH2.1 Building Wrap Selection Criteria for the Home Depot Smart Home at Duke
University, Including Test Method

Air
Penetration Water Water-

(cfm/ft 2 at Resistance Vapor UV Resistive

Building 75 Pa) by (cm) by Transmission Exposure Barrier by

Wrap ASTM AATCC- (perms) by Tolerance ICC/ASTM

Product E2178 127 ASTM E96 (days) d226

Vaproshield 0.002 68 212 UV stable ICC ES

Certified

Tyvek Homewrap 0.007 210 58 120 ICC ES

Certified

Ty v e k
Commercialwrap

0.001 280 28 270 ICC ES

Certified

n/a a

Grace Ice and Water
Shield

n/a 0.05 30 n/a

No. 15 asphalt felt n/a 52 8 n/a yes

Recommended for
rain screen

< 0.004 > 55 > 20 Low or no

degradation

Required

a n/a, not available.

Questions

1. How does this material selection process differ under the traditional stepwise
design process and the integrated green design process? How may the
criteria be applied using computer models (e.g. BIM)?
2. What other types of passive and active systems can be used to design building
wraps?
3. How might sensors be used to enhance these processes?

Resources

ASTM E2178: http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/
REDLINE PAGES/E2178.htm?L pyfx6202

Rain Screen prose: http://irc.nrc-cnrc.gc.ca/pubs/ctus/34 e.html
AATC test method 127-2003: http://www.aatcc.org/Technical/Test Methods/scopes/
tm127.cfm
AATC E96M-05: http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/
REDLINE PAGES/E96E96M.htm?L

+ mystore +

+ mystore + bfks2207

ICC-ES reports: http://www.icc-es.org/

Source: This example was provided by Tom Rose, Director of the Duke Smart Home Program.