Quality. Selection. Experience.

Superior performance silica sands and diatomaceous earth.


We meet the highest quality standards in the industry for all types of
building product applications.

Product Selection
construction man
Product Selection

More than 100 blends to match your needs

  • Wide selection of size-controlled, color-monitored silicas and cristobalite
  • Coarse, medium and fine grades available in round and sub-angular grains
  • Custom blends meet even the most restrictive specification requirements 
  • Grinding capabilities at multiple plants maximize our product offering 
Product Quality
Pure White Whole Grain Silica
Product Quality

Pure, white, consistent

  • Multiple ISO registered plants to ensure product quality and accountability
  • Ongoing quality analyses/inspections ensure consistent purity and size distributions
  • Our products meet Department of Transportation standards for strength and durability 
  • Proven track record in meeting ASTM standards and specifications
Map of ISP Locations

Everywhere You Need Us

  • Nearby plants reduce freight costs to minimize formulation costs  
  • Strategically located regional plants mean on-time deliveries
  • Diversity of plant locations helps ensure reliable, uninterrupted shipments 
Research and Development
Customizing Products
Research and Development

Innovating higher performance

  • Specially engineered products meet higher standards to provide enhanced value
  • Diverse team with extensive knowledge and experience in building industry
  • Ability to customize products to meet the most critical specifications


Our product solutions enhance performance in a wide array of building products applications.

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