Dura-Rubber High-Build 

3.5 Gallon Dura-Rubber High-Build

Why Choose High-Build?

Build a thicker protective membrane
High-Build is designed for projects that need added coating thickness.

Flexible waterproof protection
Forms a seamless rubber membrane that accommodates minor surface movement when properly applied and cured.

Single-part convenience
Stir thoroughly before use. No separate hardener or two-part mixing.

Apply with a roller, squeegee, or trowel
Follow the High-Build application guide for preparation, coating thickness, and curing requirements.

Black finish or your choice of color
Use High-Build as a black finish or topcoat with regular Dura-Rubber in your selected color.

Very low odor and easy cleanup
Low-VOC formula. Clean tools with soap and water before the coating dries.

 

How to use

1. Prepare the surface
Remove dirt, grease, loose coating, and other contaminants. The surface must be clean, dry, and sound. Follow your project guide for moisture and adhesion testing.

2. Prime and repair as required
Use the recommended primer for your surface and application. Repair suitable cracks and defects before coating.

3. Stir and apply
Stir High-Build thoroughly. Apply with a suitable roller, squeegee, or trowel at the thickness specified in the High-Build application guide. Allow each coat to dry as directed before recoating.

4. Add the specified finish
Depending on your project, leave it black or apply regular Dura-Rubber for color. Use sealer where the application system requires it.

5. Allow it to cure
Follow the High-Build guide before exposing the coating to traffic, standing water, or service. Cool temperatures, high humidity, and thicker coats can extend curing.

6. Clean your tools
Use soap and water before the coating dries.

 

Application & Safety Documents

Instructions PDF

Dura-rubber sds PDF

crumb rubber sds PDF

High-Build FAQs

What’s included?

One 3.5-gallon bucket of Dura-Rubber High-Build in black. Primer, regular Dura-Rubber color coating, Crumb Rubber Mix, sealer, and application tools are sold separately.

 

How is High-Build different from regular Dura-Rubber?

High-Build has a thicker formula designed to build a thicker rubber membrane. Regular Dura-Rubber can be used as a color coat over High-Build when specified for your project.

 

How much area will one bucket cover?

Coverage depends on the required coating thickness, surface condition, and application system. Follow the High-Build application guide or contact us for help calculating quantities.

 

Do I need primer?

Primer requirements depend on your surface and application. Follow the appropriate project guide and perform an adhesion test before coating the full area.

 

Do I need to mix two components?

No. High-Build is a single-part coating. Stir thoroughly before use—there is no separate hardener to add.

 

How do I apply it?

Apply with a suitable roller, squeegee, or trowel to a clean, dry, properly prepared surface. Follow the High-Build application guide for coating thickness, drying between coats, and curing requirements.

 

What colors are available?

High-Build is available in black. For a colored finish, topcoat with regular Dura-Rubber in your selected color as specified for your project.

 

Can I add Crumb Rubber Mix?

Crumb Rubber Mix can be used with High-Build for specified patching or texture applications. Follow the recommended mixing ratio and application instructions for your project.

 

Can I use it indoors?

High-Build has very low odor and low VOC. Follow the application guide and Safety Data Sheet for preparation and working conditions.

 

How long does it take to cure?

Curing depends on coating thickness, temperature, humidity, and your application system. Follow the High-Build application guide before exposing the coating to traffic, standing water, or service. Dry to the touch does not mean fully cured.

 

Do I need a sealer?

Sealer requirements depend on the application and desired finish. Follow your project’s specified coating system, particularly when using decorative flakes.

 

How do I clean my tools?

Clean tools with soap and water before the coating dries.

 

How do I choose the right materials?

Contact us with your surface type, project area, and expected exposure or traffic. We can help you choose coating quantities, primer, and finishing materials.

3.5 Gallon Dura-Rubber High-Build

$299.99

Covers approximately 140–200 sq. ft. per 3.5-gallon bucket.

includes all required coats. coverage varies by application, surface condition, 

and coating thickness. follow your project’s application guide.

Thick, Flexible Waterproof Protection

Dura-Rubber High-Build creates a thicker rubber membrane for projects that need added coating thickness. Use it as a black finish or topcoat with regular Dura-Rubber in your choice of color.

  • Single-part formula: No separate hardener or two-part mixing.
  • High-build application: Spread with a suitable roller, squeegee, or trowel.
  • Flexible protection: Accommodates minor surface movement.
  • Very low odor and low VOC.
  • Easy cleanup: Soap and water before the coating dries.

Available in black. Primer, preparation, coating thickness, and curing requirements vary by project. Follow the application guide.

 

Thicker Rubber Membrane
Build coating thickness with a formula designed for roller, squeegee, or trowel application.

Flexible Waterproof Protection
Creates a seamless waterproof membrane when applied and cured according to the project guide.

Your Choice of Finish
Leave it black or topcoat with regular Dura-Rubber in your selected color.

Single-Part Convenience
No separate hardener to mix. Very low odor, low VOC, and soap-and-water cleanup before drying.

Before & After: Stopping Leaks at a Public Storage Facility

Leak-Proof Results You Can See

Before: Weathered concrete and open joints let rainwater seep through, weakening the surface and flooding lower units.
After: A thick coat of Dura-Rubber High-Build formed a seamless, watertight barrier, restoring durability and preventing future leaks.

Tough Waterproof Strength That Last

Before: Damaged concrete allowed rainwater to seep through, weakening the drive and flooding units underneath.

 

After: A thick coat of Dura-Rubber High-Build created a seamless, watertight surface that restored strength and durability.

Seals Cracks. Stops Leaks. Stays Tough.

Before: Cracked concrete allowed water to leak into storage units below, causing costly damage and moisture buildup.
 

After: Dura-Rubber High-Build sealed every crack with a tough, flexible rubber coating, stopping leaks instantly and providing long-lasting protection against the elements.