Tape types and where to use them
Paper tape is the standard for flat tapered seams — embed it in the first coat of all-purpose joint compound while the mud is wet. Paper resists cracking along butt joints when embedded correctly.
Fiberglass mesh tape is self-adhesive and works on flat repairs and some prefilled gaps, but many pros avoid mesh on butt joints in new construction because it can telegraph cracks without proper bedding.
Joint compound lineup
- All-purpose (ready-mixed): embedding tape, second coat, repairs
- Topping compound: thinner final coats, easier sanding
- Quick-set (setting-type): fast coats, fill deep gaps, control dry time
- Lightweight mud: easier sanding, slightly less durable for embed coat
Three-coat process overview
Coat 1 (embed): thin bed of mud, press paper tape into tapered seams, knife off excess. Coat 2 (fill): widen the seam 6–8 inches, fill screw heads. Coat 3 (finish): feather 10–12 inches, ready for sand.
Butt joints need a wider build — no tapered edge means you create a gradual hump that must sand flat without scuffing face paper.
Inside and outside corners
Inside corners: fold paper tape or use metal-reinforced corner tape; mud both sides in one pass with a corner trowel. Outside corners: metal or vinyl corner bead nailed or screwed, then three coats like a seam.