Standards & guidance · Defined
ASTM E1105 — Field water-penetration testing
An ASTM test method for evaluating water penetration of installed windows, skylights, doors, and curtain walls under specified pressure conditions.
Standards references reviewed September 15, 2026. These summaries explain purpose, not the full standard. Confirm the edition required by your contract, program, and jurisdiction; publication of a newer edition does not automatically change local requirements.
Why it matters
The tested location, pressure, setup, and acceptance criteria matter. Passing one test is not a warranty that every enclosure area is watertight under every exposure.
In practice
A project example
A selected window installation is tested under the project’s specified conditions, with findings limited to that test.
Technical references
General educational guidance from KOW Building Consultants. Examples are illustrative, not project records. The applicable contract, standard, program, and jurisdiction control the requirements for a specific assignment.