MasterProtect P 100: Clear acrylic primer for MasterProtect coatings

Formerly: Thoro Primer 1000

How does MasterProtect P 100 work?

MasterProtect P 100 is a water-based acrylic primer that enhances adhesion between acrylic topcoats and the substrate. It also helps maintain a wet edge of acrylic topcoats over concrete, plaster, stucco and previously painted surfaces.

Recommended uses:

  • Surfaces that exhibit chalking after cleaning
  • Surfaces to receive MasterProtect acrylic wall coatings

What are the unique features of MasterProtect P 100?

  • Substrate sealer
  • Substrate conditioner
  • Versatile
  • Water-based, VOC compliant

What are the benefits of MasterProtect P 100?

  • Seals dusty and chalky surfaces prior to the application of MasterProtect acrylic wall coatings
  • Improves the adhesion of MasterProtect acrylic wall coatings. Helps consolidate weak, dusting substrates
  • Can be used on a variety of substrates
  • Complies with federal and most regional VOC limits

US / Product Information

Data Guide

Data Guide (French)

Data Guide (Spanish)

Certification Letter

LEED Letter

Direct contact

Master Builders Solutions Technical Support

Construction Systems


Safety Data Sheet (SDS)

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Product Certifications

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Related Literature

Certification Letter

pdf (97.93 Kb)

Data Guide

pdf (142.50 Kb)

LEED Letter

pdf (77.75 Kb)

Wall Coatings Selector Guide

pdf (529.62 Kb)