Stay Warm All Winter Long

Hunker down with a new Wilkening or Kozy Heat fireplace that will keep your family warm during the coldest winter months. 

Keweenaw Construction Materials

Based in Houghton, MI, we operate a block manufacturing facility and a showroom stocked with a large selection of building materials and tools. 

Production Facility

We manufacture a variety of block products for commercial, residential, and DIY projects and have been recognized nationally for our production versatility.

Showroom & Warehouse

Our showroom and warehouse facilities are stocked with a huge selection of building materials, fireplaces, manufactured stone, tools, and more.

Our History

Since 1946, Superior Block has been serving contractors, landscapers, and DIY homeowners in the Western Upper Peninsula and beyond. We are dedicated to quality, service, and community involvement. 

Michael and Dan Lorenzetti, 4th of July Parade, 1985

Project Gallery

We serve contractors, landscapers, and DIY homeowners in the Western Upper Peninsula and beyond. Let us help you plan your next project and find the right materials to make it stand out.

Inside Our Block Factory

Our manufacturing facility is capable of producing over 6,000 blocks per day. On average, we produce about 500,000 blocks per year.