Table 1 Notes:

1. Dry Cup Method
2. Wet-Cup Method
3. Other Method
4. Note: this chart provided for information only. Direct comparisons of water vapor permeance values may not always be applicable, as different methods of measuring produce different results. Materials may also have varying water vapor permeability with changes in relative humidity.
5. Sources of Data: ASHRAE Handbook Fundamentals and Sto Corp.

Figure 3 Notes:

1. Source of Data: independent testing by Cerny & Ivey Engineers
2. Fluid applied air/moisture barrier material did not leak, but met limit of testing fixture.
3. Materials tested in accordance with AATCC-127 (American Association of Textile Chemists and Colorists Test Method 127−Water Resistance: Hydrostatic Pressure Test [modified]). A column of water 55 cm (21. 6 inches) tall is placed over the moisture barrier material and sealed to the surface. The moisture barrier material spans a 3 mm (1/8 inch) wide joint in supporting sheathing. Building wraps and building paper are not penetrated with fasteners. Time to water penetration is then measured. For the materials that met the 5 hour criteria, the height of the water column was increased to determine the limits of the material.

References

American Architectural Manufacturers Association, Installation Masters Training Manual. Schaumburg: AAMA, 2000.

American Architectural Manufacturers Association, Window Selection Guide. Palatine: AAMA, 1995.

American Association of Textile Chemists and Colorists, AATCC-127 Water Resistance Hydrostatic Pressure Test. AATCC, 1995.

American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., 1993 ASHRAE Handbook-Fundamentals, (I-P Edition), Atlanta: ASHRAE, 1993.

Anastasi, Leonard, "Air Barrier Systems for the Life or Your Building," The Construction Specifier, (March, 2002), 30−35.

Anis, Wagdy "Insulation Strategies for Exterior Walls," The Construction Specifier, (August, 2002), 40−45.

Canada Mortgage and Housing Corporation, Commissioning and Monitoring the Building Envelope for Air Leakage, (Report No. 33127/02), Ottawa: CMHC, 1993.

Canada Mortgage and Housing Corporation, Rainscreen, Ottawa: CMHC.

Cerny & Ivey Engineers, Inc., Water Penetration Resistance Testing Sto Gold Guard (Engineering Report No. 20409), Atlanta: Cerny & Ivey Engineers, Inc., 2001.

International Code Council, Codes Forum(September/October), Falls Church: ICC, 2002.

Construction Specifications Canada and Alberta Building Envelope Council, CSC TEK·AID Digest Air Barriers, Toronto: CSC & ABEC, 1990.

Foundation of the Wall and Ceiling Industries, Mold: Cause, Effect and Response, Itasca: FWCI, 2002.

International Code Council, Inc., International Building Code. Falls Church: ICC, Inc., 2000.

International Conference of Building Officials, Uniform Building Code, (Vol. 3), Whittier: ICBO, 1997.

Kubal, Michael, T., Waterproofing the Building Envelope, New York: McGraw-Hill, Inc., 1993.

Lstiburek, Joseph. Builder's Guide. Minneapolis: Energy and Environmental Building Association, 2001.

National Research Council of Canada, National Building Code. Ottawa: NRCC, 1995.

Southern Building Code Congress International Product Safety Testing Evaluation Services, Inc., Evaluation Guide on Floor, Wall, and Roof Systems (Testing for Moisture Protection Barriers). Birmingham: SBCCI PST & ESI, 1995.

Odom, David J. III, Preventing Indoor Air Quality Problems in Educational Facilities: Guidelines for Hot, Humid Climates, Orlando, 1997.

Odom, David J. III, "Solving Indoor Air Quality Problems in Hot, Humid Climates," Building Standards (September-October, 1994), Whittier: International Conference of Building Officials, 1994.

Pennsylvania Housing Research Center, The Use of Housewrap in Walls: Installation, Performance and Implications, (PHRC Research Series Report No. 59), University Park: PHRC, 1998.

Trechsel, Heinz R., Moisture Analysis and Condensation Control in Building Envelopes, (ASTM MNL40), West Conshohocken: ASTM, 2001.

Footnotes

1. The Use of Housewrap in Walls: Installation, Performance and Implications, PHRC Research Series Report No. 59 (University Park, 1998), p. 41.
2. International Code Council, Inc., International Building Code (Falls Church, 2000), p. 3.
3. Ibid.