Summer heat turned my joint compound to liquid

Yesterday, I was on a site and the heat was crazy! My joint compound mixed up way too thin from the humidity. I tried to apply it anyway, but it just slid right off the wall. I had to stop and make a new batch with less water. Now I always check the forecast before I mix large amounts. What do you all do when the air is moist like that? I want to hear your best ideas for keeping mud good in tough conditions!

4 comments

4 Comments

moore.beth1mo ago

Do you check the dew point before mixing? (I learned that the hard way last summer.) Humidity messes with the water ratio, so have you tried using a setting-type compound on hot days? It sets by chemical reaction, not by drying out, which might handle moisture better. What's your take on adding less water when it's humid? I'm curious if that fix causes other problems, like cracking or poor adhesion. Let me know what works for you.

gibson.morgan1mo ago

Last summer, my batch turned to soup because I ignored the forecast.

kimfisher1mo ago

My garage floor last July turned into a slip and slide thanks to humidity. I've been banned from mixing anything more complex than pancake batter since.

nancyjones4d ago

Wait, you didn't check the weather before mixing?