Model # 18680H

Internet #100320408

Store SKU #981884

Westpac Materials 3-1/2 Qt. All-Purpose Pre-Mixed Joint Compound

Westpac Materials

3-1/2 Qt. All-Purpose Pre-Mixed Joint Compound

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Product Overview

Westpac Joint Compounds are pre-mixed vinyl based compounds formulated on the direct input from professional applicators. Westpac joint compounds provide ease of mixing, excellent working time, and minimal shrinkage and provide a smooth finished surface. All-Purpose joint compound is a versatile performer suitable for all finishing applications with excellent bond and great workability. Use all-purpose joint compound for taping and first coating corner trims.

  • Pre-mixed, vinyl-based compound
  • Approximate 24-hour drying time
  • Suitable for all finishing projects
  • Convenient 1 Gal. size
  • Covers approximately 95 sq. ft.
  • Non-tinted
  • Note: Product may vary by store

Info & Guides

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Coverage Area (sq. ft.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Container Size (gallons)
Drying Time (hours)
24 h
Drywall Features
No Additional Features
Product Weight (lb.)

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Customer Questions & Answers

can I use a plastic trowel to apply? Only using on a small area.

Asked by: mike
yes you get a better edge with a thinner edge on your knife but in desperation once I used a kitchen spatula
Answered by: Chameleon53
Date published: 2016-09-15
  • y_2017, m_8, d_18, h_3CST
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Customer Reviews

3-1/2 Qt. All-Purpose Pre-Mixed Joint Compound is rated 4.4 out of 5 by 8.
Rated 4 out of 5 by from this is 3 rd one I bought for the job. I like it handy instead of using the powder type. It save ... this is 3 rd one I bought for the job. I like it handy instead of using the powder type. It save you of lot of time to prepare for patching wall and crack. Its works pretty strong on the joint too.
Date published: 2017-05-23
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-07-13
Rated 4 out of 5 by from Joint Compound and more Base on my use of this product .... Used to tape joints and apply a heavy artisan plaster finish to all the walls & ceilings in my woodshop. Worked well as a joint compound and feathered out smooth. Some shrinkage during the curing so a second feather coat was used. Since the top coat was thick, I had no need to sand the tape joint/screw coats prior to application. Remove only what you plan on using in about 5 minutes and place in a mud tray. Keep a lid on the bucket so the product doesn't dry out. I found that a 5 minute window gave me the best results for feathering. The product has a longer work time but 5 min. or less gave me the optimal consistency. Purchased the 1-callon bucket as a "trial size" and have since moved to the 5-gallon size of the same material.
Date published: 2012-10-09
Rated 5 out of 5 by from All-Purpose Pre-Mixed Joint Compound One of the reason I got this was the 1-Gallon Plastic Tub. The tub keeps it from drying out. The box version I always make a mess on the bag and it drys on the sides and when I open the bag it fall into the wet mud. Plus I don't need that much mud. It's the same product from Westpac but in a tub. They make great products. It dries pretty quick. It states 24hrs to dry, but it depends on how thick you apply it. There is minimal shrinkage. Goes on real smooth.
Date published: 2014-08-27
Rated 2 out of 5 by from too much shrinkage Used this product and found it had a lot of shrinkage issues even where it was applied over screwholes.
Date published: 2016-05-15
Rated 5 out of 5 by from its mud its mud what can i say, it smeared on wall and stayed in place convient size
Date published: 2016-07-26
Rated 5 out of 5 by from Works as expected For a first-timer at wall texturing, this product was easy to use and the patch results mostly match the existing wall texture (due to user inexperience, not product quality).
Date published: 2014-06-11
Rated 5 out of 5 by from Good value This is easy to work with and a good value. It is harder when it dries than some other joint compounds I've used but it sands easily.
Date published: 2013-08-19
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