Prepare DURABOND 45 or 90 joint compound by mixing into a solution of 1 part water and 1 part ACRI-ADD™ acrylic fortifier. Use prepared mixture to refinish surface damage. Initial application over deep areas should be set and partially dry prior to application of subsequent coats. Finish to a smooth surface. How do I use Eclipse Marketplace? eclipse marketplace missing.

How do you mix compound 90?

The mixing ratio is 3 parts powder to one part water. Only make enough Sheetrock to use in the time allotted. Hardening action cannot be prevented or delayed by dilution with water.

How long does 90 minute mud take to dry?

At the far end, drywall mud, also known as joint compound, needs to dry for 24 hours between each coat and before sanding, priming, and painting. The 24 hour drying time recommendation can be applied to nearly all factors.