USG Plus 3 Vs. All Purpose: Which Joint Compound Wins For Your Drywall Job?

I’ve spent years finishing drywall in my own places and helping neighbors with repairs, and the choice between USG Plus 3 and All Purpose joint compound keeps coming up every single time I open a bucket.

This article walks through both products from a practical user view so you can match the right mud to the job, avoid extra work, and get cleaner results without second-guessing the bag on the shelf.

Key Differences Between USG Plus 3 And All Purpose

• Weight and physical handling on the job USG Plus 3 comes in noticeably lighter buckets and bags. When I carry a full 3.5-gallon box up a ladder or across a job site, the difference shows up in my shoulders by mid-afternoon. All Purpose feels denser and heavier right from the first lift. That extra mass matters on ceiling work or multi-room projects where you move material constantly. The lighter formula also spreads with less pressure on the knife, so I can keep a steadier hand for longer periods without the same level of fatigue.
• Shrinkage behavior during drying Plus 3 pulls back less as it dries. On deep fills or multiple layers I see fewer low spots that demand extra coats. All Purpose shrinks more, especially in thicker applications, which forces me to plan for additional passes and extra drying time. In rooms with average humidity I have watched All Purpose settle enough that a second or third coat becomes mandatory just to bring the surface level again.
• Sanding resistance and dust production Sanding Plus 3 feels closer to working with a dedicated topping compound. The surface yields under light pressure from 150- or 220-grit paper and produces a finer dust that cleans up faster. All Purpose fights back. I need more pressure and often switch to coarser grits first, which creates more airborne particles and longer clean-up sessions. For large walls that difference multiplies into hours of extra work.
• Bond strength with paper tape All Purpose contains a higher adhesive load. When I embed tape I feel the compound grab and hold with less chance of bubbles or later lifting. Plus 3 still works for residential taping, yet the bond sits a step softer. On high-traffic areas or commercial-style framing I lean toward All Purpose for the first coat to lock the tape in place before switching to the lighter product for finish coats.
• Number of coats required over fasteners and beads Plus 3 often lets me stop one coat sooner over screw heads and corner bead. The reduced shrinkage and smoother leveling cut the total layers. All Purpose usually follows the classic three-coat sequence without shortcuts. That extra coat adds both material cost and calendar time on bigger jobs.
• Overall feel under the knife Plus 3 spreads with a creamier, almost buttery consistency that stays workable longer on the board. All Purpose feels denser and can drag slightly more, especially if the room temperature drops. The difference shows most clearly when I feather edges over large areas; Plus 3 blends with fewer ridge marks.

Also Read: Comparison of Plasterboard And Drywall.

Key features of USG Plus 3

• Lightweight formula that reduces carry weight by roughly one quarter Every time I load the truck or climb scaffolding the lighter density saves energy. I can keep working longer before my arms start to shake, which matters on full-day ceiling jobs.
• Built-in ease of sanding that matches many topping compounds The surface sands clean with minimal pressure. I rarely leave swirl marks or create new depressions that need filling again. This feature alone cuts finishing time on every project I have used it for.
• Lower shrinkage rate across multiple coats Deep fills and multi-layer joints stay closer to level after drying. I spend less time hunting for low spots the next morning and can move straight to the next stage of the job.
• Ability to serve as a single product for embedding, filling, and finishing I no longer need separate buckets for taping and topping on smaller residential work. One product covers the entire sequence, which simplifies ordering and storage.
• Fewer coats needed over metal fasteners and corner bead The combination of lower shrinkage and smoother leveling often eliminates one full application pass. On a room with dozens of screw heads that saving adds up quickly.
• Smooth, consistent texture that works well for simple hand textures When I want a light orange-peel or knockdown effect without switching products, Plus 3 holds the pattern cleanly and sands back without tearing.

Pros of USG Plus 3

• Dramatically lower physical strain during application and transport Carrying and lifting lighter material day after day protects shoulders and lower back. On multi-story projects the cumulative savings in fatigue is obvious by the end of the week.
• Faster sanding that shortens the dustiest and least enjoyable stage of the job I finish sanding sessions sooner and with less effort. The finer dust also settles faster and cleans up with less sweeping and vacuuming.
• Reduced material waste from fewer corrective coats Less shrinkage means fewer low spots that need filling again. I use less compound overall and spend less time waiting for extra layers to dry.
• Greater comfort on overhead work Ceilings become less punishing because the mud itself weighs less on the knife and on my arms. I maintain better control for longer stretches.
• Simplified inventory for smaller crews or DIY projects One product covers embedding, filling, and finishing. I buy fewer different bags and store less material in the garage or trailer.
• Cleaner feather edges that blend into the surrounding board with less effort The creamy texture lets me draw out long, thin edges that disappear under primer more easily.

Cons of USG Plus 3

• Slightly softer bond when embedding tape on demanding joints On high-stress areas or commercial framing I sometimes switch to All Purpose for the first coat to gain extra security. The difference is small on typical residential work yet noticeable on critical locations.
• Softer cured surface that can mark more easily during later work Accidental scrapes from tools or ladders show up more readily. I have to be extra careful during the final stages of a project.
• Occasional need for a heavier product on the first coat in certain conditions When the framing is less than perfect or the tape must hold against potential movement, many users still prefer the denser formula underneath.
• Higher price per volume in some markets The convenience of lighter weight and easier sanding often carries a modest cost premium that adds up on large jobs.
• Texture that some pros describe as too soft for aggressive knife work A few experienced finishers prefer the resistance of denser mud because it gives clearer feedback under the blade.

Also Read: Comparison of Sheetrock And Blue Board.

Key features of USG All Purpose

• Higher adhesive content that locks paper tape firmly in place The compound grabs the tape and the paper face of the drywall with a reliable bond. I have never seen tape lift on jobs where I used All Purpose for the embedding coat.
• Dense body that fills gaps and voids without excessive sagging On imperfect framing or larger gaps the heavier formula stays put better during the initial set. It supports the tape while the joint stabilizes.
• Proven performance across every stage of traditional three-coat work From bedding through final finish the same product handles the full sequence. I can open one bucket type and know it will finish the entire wall.
• Strong final surface that resists minor surface damage during later construction Once cured the denser finish stands up better to accidental bumps from ladders or tool bags. In active job sites that toughness reduces touch-up work.
• Familiar working properties that most crews already know by feel The consistency under the knife stays consistent from bucket to bucket. Experienced hands can judge thickness and coverage by touch alone without constant re-checking.
• Reliable results in a wide range of temperature and humidity conditions I have used All Purpose in cooler basements and warmer attics with predictable drying and bonding behavior.

Pros of USG All Purpose

• Superior tape adhesion that reduces the risk of later failures The stronger bond keeps joints tight even if the framing shifts slightly over time. I sleep better knowing the tape is locked down hard.
• Dependable fill power in imperfect conditions Gaps, out-of-plane boards, and thicker applications stay supported without excessive sagging or sliding.
• Tough cured surface that stands up to construction traffic Later trades walking through or leaning ladders against finished walls cause fewer dings that need repair.
• Consistent performance that experienced installers already trust No learning curve for crews who have used the product for years. The feel under the knife stays familiar from job to job.
• Solid results when only one product is available on site If the supply run brings only All Purpose I can still complete every stage without compromise on strength.
• Better resistance to minor surface scratching before paint The denser finish holds up during final clean-up and fixture installation with fewer visible marks.

Cons of USG All Purpose

• Extra physical effort required for every lift and every stroke Heavier material multiplies fatigue across a full day. Ceiling work becomes noticeably harder on the arms and neck.
• More aggressive sanding that lengthens the finishing phase I spend longer at the pole sander and generate more dust that settles on every surface in the room.
• Greater shrinkage that forces additional coats and longer drying cycles Deep fills and multi-layer joints almost always need extra passes. The calendar stretches and material use increases.
• Higher overall workload when the job includes large areas of fasteners and bead The standard coat count remains fixed, so total labor hours climb on bigger installs.
• More difficult cleanup after sanding sessions Coarser dust and longer sanding times leave more residue on floors, plastic, and tools.

Choosing Based On Project Type

For a full new-build room I often open All Purpose for the tape coat and then switch to Plus 3 for the second and third coats. The combination gives me the strongest possible joints and the easiest possible finish.

On pure repair work or skim-coating an existing wall I stay with Plus 3 from start to finish because the lighter weight and easy sanding outweigh any minor difference in adhesion. Ceiling-heavy jobs almost always push me toward Plus 3 for the simple reason that my arms last longer.

Temperature and humidity also play a role. In cooler or more humid spaces All Purpose can take longer to firm up, while Plus 3’s lower shrinkage still helps keep the surface closer to level.

In hot dry weather both products behave more predictably, yet the weight advantage of Plus 3 remains.

Application Tips From Repeated Use

I always mix both products to a consistent, peanut-butter thickness before loading the knife. Over-thinning either one increases shrinkage and weakens the bond.

When embedding tape I apply firm pressure with a 6-inch knife for All Purpose and a slightly lighter touch with Plus 3 so I do not squeeze out too much compound.

For finish coats I switch to a 10- or 12-inch knife and keep the edges feathered far out onto the board. Sanding always happens after a full overnight dry; rushing either product produces torn paper or uneven surfaces.

Storage matters. Both compounds prefer a moderate temperature range. Freezing ruins the emulsion, and extreme heat can cause skinning. I keep opened buckets tightly sealed with a layer of plastic against the surface to limit drying.

Also Read: Comparison of Lath and Plaster And Drywall.

Frequently Asked Questions (FAQ)

Wrapping Up

After working with both products across dozens of rooms I keep both on the shelf and match them to the demands of each stage.

You gain the strongest joints and the smoothest finish when you use the strengths of each rather than forcing one product to do every task. That approach saves time, reduces fatigue, and leaves a surface ready for paint with fewer touch-ups.