How Much Drywall Compound Do You Need? A Complete Guide for Your Next Project

When starting a drywall project, one of the most common questions is: “How much drywall compound do I need?” Estimating the right amount of compound ensures your project runs smoothly without unnecessary trips to the store. In this guide, we’ll help you calculate the right amount and introduce some excellent drywall compound options available at Reno Materials.

Understanding Drywall Compound Types

Before diving into quantities, it’s important to know the types of drywall compound available:

• Setting-Type Compounds: These compounds (like Sheetrock 20, 45, or 90) harden through a chemical reaction. They are ideal for fast repairs, deep fills, and cold environments.

• Ready-Mixed Compounds: Products like All Purpose Lite and Machine Mud are pre-mixed for easy application and ideal for taping, filling, and finishing drywall joints.

Each type has its advantages depending on your project’s needs.

How Much Drywall Compound Will You Need?

The amount of compound you need depends on several factors:

• Total square footage of drywall being finished

• Number of coats you plan to apply

• Experience level of the applicator (more experienced installers waste less)

• Drywall type (standard, ceiling, or specialty boards)

General Rule of Thumb:

You’ll need about 1 gallon of compound per 100 square feet of drywall surface, for a standard 3-coat application (tape coat + two finish coats).

Here’s a quick estimate:

Note: Heavy textures or uneven surfaces may require more.

Choosing the Right Drywall Compound

At Reno Materials, we offer a variety of drywall compounds to suit your project size and type:

Sheetrock 45 Setting-Type Drywall Compound (11 kg Bag)

Ideal for quick setting and patching projects, Sheetrock 45 sets in about 45 minutes. It’s perfect for smaller areas or when you need to speed up your work.

All Purpose Lite Drywall Compound

This lightweight, ready-mixed compound is great for all phases: taping, filling, and finishing. It’s easier to sand, reducing your effort during the final stages.

Machine Mud Drywall Compound – Ready Mixed (17 L Carton)

Designed for use with mechanical tools, Machine Mud is a time-saving solution for larger projects or professionals who want consistent results.

Sheetrock 20 Setting-Type Drywall Compound (11 kg Bag)

If you need an even faster set, Sheetrock 20 offers a 20-minute working time, making it ideal for quick repairs or patch jobs.

CGC Sheetrock 90 Setting-Type Drywall Compound (11 kg Bag)

For larger or more complex jobs, Sheetrock 90 provides a longer working time, giving you flexibility for detailed finishes.

Final Tips for Estimating Compound Needs

• Buy a little extra: It’s better to have more than run out mid-project.

• Consider jobsite conditions: Temperature and humidity can affect drying times and coverage.

• Use the right tools: Proper taping knives and pans will help you apply compound efficiently and minimize waste.

Need help choosing the right compound?

Visit Reno Materials today or contact our team we’re happy to guide you toward the best products for a smooth, professional finish!