Installation Guide

Barry G. Hardman, Chairman

ASTM Fenestration Installation Task

Group (developed ASTM E 2112 -

Standard Practice for Installation of

Exterior Windows, Doors, and

Skylights), National Institute of Building

Science,

Vice Chairman,

BETEC

National Building Science Corp.,

Partner

“Without question, the most important materials that can be

used in modern home construction are properly selected

housewraps/membranes that, when used together with a

flashing system, can stop damage that occurs from liquid

water breaching the claddings. Installation methods of

these materials are critical, as improper installation can

render the materials useless.

The key is to have one building envelope, integrated and

protecting the structure from water damage, from the roof

to below the foundations.”

WHAT THE PROS SAY

Tips from the Pros... you’ll save time and money

Joe Lstiburek, Ph.D, P. Eng.

Principal,

Building Science Corp.

“Mold problems cannot exist without water problems. No

water problems, no mold problems. The sooner the water

is directed out of the building structure, the better. The

best expression of this concept is a flashing. Flashings

are the most underrated building enclosure component

and arguably the most important.

Window and door components within the opening can

leak, especially if installed improperly or if they are of

poor quality. Even the best made windows and doors can

leak as they age. Therefore, all windows and doors, as

well as all other critical detail areas, have to be properly

flashed. Self-adhered flashing membranes, such as Grace

Vycor Plus Tapes, are the first line of defense against

water damage of building structures.”