Muddskip Drywall Additives

Using both? Tape seams with Heavy Duty, coat the wall with it once they're dry to the touch (about 90 minutes, depending on conditions), then finish with Level 5 Smooth. Shop more mud additives.

How much Muddskip do I add to joint compound?

Add one 2 lb bag, or 2 lb scooped from the pail, to a typical 18 lb bag, 35 lb box or 4.5-gallon bucket of joint compound. Add water as needed while you mix, and scale it down for partial batches.

What joint compound works best with Muddskip?

Midweight works for every coat. Save lightweight for the final one or two thin finish coats. Use all-purpose only for taping, bedding, filling and heavy repairs, not finish coats, because it sands harder. Muddskip works in premixed or setting-type (hot mud) compound, but don't mix setting-type and premixed in one system unless current technical guidance allows it.

Do I still have to sand?

No, unless you want to. Instead of sanding a dried coat smooth, rehydrate it and retool it with your knife. If you do sand, use nothing coarser than 150 grit; 220 to 320 grit is preferred, and you'll find it in our sanding sponges and drywall abrasives.