Who We Are

We’ve been making high-quality insulation trusted by professionals for a variety of applications since 1978. By choosing Manson, you are choosing higher quality glass mineral wool products with superior performance, and better for the environment.


Manson Insulation products are produced in ISO 9001, 14001, 18001, and 50001 certified factories. These facilities have been in continuous operation since 1978.  

Made In The USA 

All Manson Insulation products, including Alley K®, AK Board™, AK Flex™, Akousti-Liner™, Akousti-Liner R™ and Alley Wrap™, are produced by Knauf Insulation in Shelbyville, IN; Lanett, AL; or Shasta Lake, CA, USA.  

Manson Insulation products meet the requirements of the Buy America Act (Federal Transit Administration - Title 49, Part 661) and the Buy American Act (ARRA Section 1605 - 2009). 

Our History 

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ECOSE® Technology 

ECOSE Technology is a revolutionary binder chemistry that enhances the sustainability of our products. The "binder" is the bond that holds our fiberglass product together and gives the product its shape and brown color. ECOSE Technology is a bio-based, sustainable chemistry that replaces the phenol/formaldehyde (PF) binder traditionally used in fiberglass products. Products using ECOSE Technology are formaldehyde-free and have reduced global warming potential when compared to our products of the past. 

Product Certifications 

Our products are rigorously tested and certified, including:  

UL Environment