Mortars & Grouts

MAC Scratch & Brown Plus w/Fiber

Plaster Base Coats: Consistent performer, fewer cracks

MAC Scratch & Brown Plus w/Fiber

OBP MAC Scratch & Brown Plus w/Fiber is a dry, factory-blended plaster mortar used as the first and second coats for all types of cement applications, among other uses. With low shrinkage, excellent workability, high strength, efflorescence resistance, and product consistency, OBP Scratch & Brown provides a better base for VBM Bonding Mortars than typical plastic cement jobsite mixes. OBP Scratch & Brown is used as the first coat (scratch) and the second coat (brown) for all types of Portland Cement lath and plaster applications. It is used on interior and exterior base coats for stucco decorative wall systems. It may be used on shower walls and Portland Cement mortar beds for veneer and tile applications.

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*All colors and/or products may not be available in all areas. Please inquire for availability and special order options.

Description

  • Includes additional water repellents for greater efflorescence control
  • MAC reduces lime content, Fiber adds flexibility to reduce cracks
  • Quality Control – a consistent batch every time
  • Convenience of handling and transporting one product
  • Low Shrinkage
  • Water Repellent
  • Reduced efflorescence
  • High Strength
  • Crack resistant
  • Coverage: 0.73 Cu.Ft. Yield per 94lb bag. Coverage will vary due to thickness and waste.

Technical Information

Packaging Options

94 lb moisture-resistant bags (35/pallet)

Color Options

Natural Gray

Mortar & Grout Applications

Additive/Accessory, Stucco

Availability

Stock

Documentation

  • Complementary Masonry Mortar Color Guide 2026

    2.67 MB
    Download
  • Masonry Mortar+PMJG Colors and Finishes 2026

    2.31 MB
    Download
  • OBP Mortar & Grout Highlights Flyer

    5.92 MB
    Download
  • OBP Safety Data Sheet

    580.46 KB
    Download
  • OBP Testing Standards Crossover Guide

    2.13 MB
    Download
  • ORCO Blended Products Brochure

    8.17 MB
    Download
  • Mac Scratch & Brown Plus - 2026

    1.35 MB
    Download

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