Heavy viscosity joint compound
Use for tape application, fastener spotting and complete joint finishing of gypsum board
- Excellent adhesion/bond.
- Designed for use in mechanical taping and finishing tools.
- Mold resistant.
ProForm® All Purpose Heavy Viscosity Joint Compound is a vinyl base ready mix joint compound that may be used directly from the container.
Heavy Viscosity Joint Compound is designed for tape application, fastener spotting, and complete joint finishing of gypsum board. It can also be used to repair cracks in plastered walls, to texture surfaces, and to laminate gypsum board to other surfaces such as masonry or other gypsum board. It contains sufficient binder to secure the reinforcing tape and develops its strength and hardness by drying.
- Ideal for taping, filling, finishing, and texturing.
- Ready to use right from the container.
- Excellent adhesion/bond.
- Southeast Region
- Gulf Region
Products that suit any project criteria
123-140 lbs/9 gal per 1,000 sq ft
Tips & Tools
Detailed information to support your next project
Frequently Asked Questions
Ready to answer your product and installation questions
Do you have mold resistant ready mix?
No material can be considered “mold-proof,” nor is it certain that any material will resist mold or mildew indefinitely. However, when used in conjunction with good design, handling, and construction practices, ProForm ready mix can provide increased mold resistance versus standard ready-mixed compounds. As with any building material, avoiding water exposure during handling, storage and installation and after installation is complete is the best way to avoid the formation of mold or mildew.
How should ready mix be stacked?
Ready mix pails or cartons should not be stacked more than two pallets high.
How much does a pail or carton of ready mix cover?
A good rule of thumb is to use nine gallons of ready mix for every 1000 sq ft of wallboard.
What happens if my ready mix freezes?
While not ideal, ProForm joint compound can go through up to 3 freeze-thaw cycles. Allow material to thaw at room temperature for at least 24 hours. When thawed, turn the container upside-down for at least 15 minutes. Turn pail right-side up, remove the lid and immediately remix with an electric drill. Ready mix should be lump-free and ready to use within 1 minute. Discard ready mix that does not remix to a lump-free consistency.
What is the shelf life of ready mix?
Nine months in good storage conditions. To prevent spoilage and freezing, maintain temperature at a minimum 50˚F (10˚C) and protect container from exposure to extreme heat and sunlight.
Designs & Resources
Online access to all the latest documents, reports and product information you need.Design & Resource Center
ProForm representatives are available to answer all your finishing product questions.Expert Connection
Need Technical Information?
National Gypsum Company is the exclusive service provider for products manufactured by ProForm Finishing Products, LLC.