Choose between ASTM E783 and E1105 for field testing an installed curtain wall or storefront

Steps

1. Confirm ASTM E783's current scope (field measurement of air leakage through installed exterior windows and doors) on the ASTM store.
2. Confirm ASTM E1105's current scope (field determination of water penetration of installed exterior windows, skylights, doors and curtain walls by uniform or cyclic static air pressure difference) on the ASTM store.
3. Determine which performance issue is being investigated — air infiltration complaints point to E783, water intrusion complaints point to E1105 — and confirm the applicable standard covers curtain walls specifically (E1105 explicitly includes curtain walls; verify E783's scope for curtain wall applicability before specifying it for that assembly type).
4. Confirm the test chamber/rig setup (uniform static vs cyclic static pressure) matches what the spec or forensic investigation calls for.
5. Document ambient wind conditions and building pressure differentials during field testing, since both methods are sensitive to on-site environmental variables not present in lab testing.