Merlex Stucco, Inc. – Insulex

An Energy Efficient, Continuous Insulation,
One Coat System

Merlex introduces Insulexmerlex_insulex_002

Merlex introduces Insulex, a fiber-reinforced Portland cement exterior plaster for use in continuous insulation one coat stucco systems, ideal for achieving superior energy efficiency.



  • merlex_insulex_003Achieves greater insulation R-values when used with foam board as a continuous insulation system
  • Allows for higher energy-efficiency and California Title 24 code compliance
  • Available sanded or in concentrate form, to be mixed with sand on the job
  • Allows for accelerated job scheduling due to reduced wait time between plaster base coats
  • Contains 10% post-industrial recycled content
  • Optional recycled aggregate for 33% recycled content and LEED credit
  • Available One-hour Fire Rating with specified assemblies in ICC ESR-1607 report
  • Provides crack- and water-resistance
  • Economical and low-maintenance
  • May be used over a variety of substrates, giving architects and builders design flexibility
  • May be trowel- or spray-applied



Merlex Recycled Content Stucco is to be included in the Green Idea House in Hermosa Beach, CA. Click Here to read more about it.