---
title: "What Is Flashing? Window and Door Glossary | Honey Rock Window and Door"
description: "Flashing is waterproof material, such as metal or tape, that directs water away from the edges of a window or door opening."
url: https://honeyrock.multisites.ai/glossary/flashing
publisher: Honey Rock Window and Door
phone: +1-214-484-9982
quote: https://honeyrock.multisites.ai/contact-us
---

# Flashing

Flashing is waterproof material, such as metal or tape, that directs water away from the edges of a window or door opening.

Water finds every gap. Flashing gives it a path out. Installers lay it at the [sill](https://honeyrock.multisites.ai/glossary/sill), up the sides and over the top, lapping each layer like shingles so water runs down and out. Self-adhesive membranes and metal pans are common.

Poor flashing is a common cause of water trouble around a window. That is why installation matters as much as the product. Ask your installer how they flash the [rough opening](https://honeyrock.multisites.ai/glossary/rough-opening), how they seal the corners and how they handle the sill. A sloped sill pan is a good sign. For a full overview, read our guide to [planning a window and door project](https://honeyrock.multisites.ai/guides/planning-a-window-and-door-project).

[Where it mattersWindow replacement in Dallas](https://honeyrock.multisites.ai/window-replacement-dallas)

## Related terms

-   [Rough opening](https://honeyrock.multisites.ai/glossary/rough-opening)
-   [Sill](https://honeyrock.multisites.ai/glossary/sill)
-   [Jamb](https://honeyrock.multisites.ai/glossary/jamb)
-   [Air leakage rating](https://honeyrock.multisites.ai/glossary/air-leakage-rating)

![A modern home with wide glass doors lit warm at dusk beside a pool](https://honeyrock.multisites.ai/_astro/dusk-modern-home-pool-01.CeePxgPr_Z2giQin.webp)

## Let’s frame your view.

Send your plans or a few photos of the openings. We will help you choose the system, the brand and the glass.

[Start your project](https://honeyrock.multisites.ai/contact-us)[or call (214) 484-9982](tel:+1-214-484-9982)