What Is a Weep Hole?
A weep hole is a small opening in siding, flashing, or another exterior assembly that lets trapped water drain to the outside. The opening supports drying behind the surface and helps prevent water from collecting within wall materials. Weep holes commonly appear near the lower edge of siding systems.
Quick Facts About Weep Hole
Category
Siding drainage opening
Used for
Releasing trapped exterior moisture
Common confusion
Often mistaken for a defect or fastener gap
Also called
Weep Vent
Often discussed with
Siding Repair
Key Takeaways About Weep Hole
- A weep hole is an opening, not a fastener or sealant joint.
- Blocked openings can keep moisture trapped behind siding.
- Weep holes are not the same as soffit vents.
How Weep Hole Works
A weep hole provides a planned drainage path through an exterior surface. Water that reaches the back of siding or flashing can move downward and exit through the opening. The location near a lower edge helps gravity carry moisture away from the wall assembly.
Related glossary terms: Soffit Vent, Flashing, Water Damage.
Openings must remain clear so water can leave without collecting behind the siding. During siding repair, the surrounding panel, flashing, and drainage plane need careful inspection. A blocked opening may hold moisture, while a covered opening can interrupt the intended drainage path. A weep hole does not serve as a ventilation opening for an attic or soffit.
From the AGM Gutters team
When we inspect siding damage, we check whether each visible weep hole remains open and whether nearby flashing directs water toward it. We also look for paint, caulk, debris, or replacement siding that may cover the drainage path.
Weep Hole in Practice: A Real-World Example
A siding repair may expose a lower panel with a weep hole partly covered by caulk. The repair should preserve the opening so moisture behind the siding can drain outside.
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Related Terms
Soffit Vent
A Soffit Vent is an opening or vented panel installed in the underside of a roof…
Flashing
Flashing is thin, shaped material installed at roof edges, wall joints, and other openings to guide…
Water Damage
Water Damage is harm caused when unwanted moisture enters or remains in building materials. The moisture…
Fascia Board
Fascia Board is a horizontal board fixed along the lower edge of a roof. It supports…
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Have Questions About Weep Hole?
Contact AGM Gutters for practical guidance on Weep Hole and related gutter installation work in Arkansas.