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Lee Wallender

Joint Compound Drying Time: Did You Forget Something?

By November 20, 2010

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Beadex Joint Compound

Laying down drywall joint compound (mud) also entails waiting for the stuff to dry, so that you can sand and paint it.

I've never given much thought to joint compound drying time.  It just happens, right?

See Video:  How to Mud and Tape Drywall

But with my latest project, the mud has been drying and drying.  And drying.  Entire civilizations have sprung up, flourished, and died in the time it's taken for this joint compound to dry.

Then the lightbulb over my head turned on:  I'm working on a structure separate from my home.  It's unheated.

When you're remodeling your home, most rooms that you drywall will be warm enough for the mud to dry.  Sure, you will block off heating registers.  Yet by being part of the entire house "envelope," that room will benefit from residual heat from adjoining rooms or from the basement.  Not to mention, heavy insulation in the walls helps ward off extreme cold.

The place I'm working on hit 32 degrees F last night.  Beadex All Purpose Joint Compound, the stuff I'm using, recommends a whopping 75 degrees F for 24 hours.  No wonder the mud won't dry.  Now I've got a space heater in there and expect to be able to sand by the end of the day.


November 21, 2010 at 11:11 am
(1) John Whipple says:

Air flow more so than heat will aid in drying.

Place a large fan in the room and you will improve dry times. Many pros in colder climates will use a rapid setting compound for these first passes to speed the process up.

Joint compound that takes 2 or 3 days to dry out has been applied to think and invites mold growth…

My Thoughts,

John Whipple

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