---
title: "Mud (joint compound) | Drywall Glossary"
url: https://tapeandfloat.com/glossary/mud.html
language: en
author: James Grokman, CEO, TapeAndFloat
updated: 2026-10-28
---

# Mud (joint compound)

**Mud is the trade name for joint compound, the paste used to embed tape and cover joints, corners and screw heads. It comes ready-mixed (dries in air) or as a powder setting compound (hardens by chemical reaction).**

## Why it matters on a drywall job

- Mud is a material line in your estimate. The amount you need goes up with the finish level.
- The type of mud affects drying time between coats, which affects your schedule.

## Related guides and tools

- [Free drywall calculator](https://tapeandfloat.com/calculator.html)
- [All glossary terms](https://tapeandfloat.com/glossary/)

---

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_¿Prefiere español? [Mud (compuesto para juntas)](https://tapeandfloat.com/es/glosario/mud-compuesto.html)._