Product Description

ArmorWall Structural Insulated Sheathing™ Below Grade (BG) is our factory waterproofed exterior wall sheathing product that is used in below grade applications.  The innovative properties of ArmorWall BG make it an ideal solution for project teams looking for an all-in-one below grade product that provides continuous insulation, waterproofing, high strength and durability. 

The ArmorWall BG system is unique in that it combines the strengths of ArmorWall NC with built in returns, proprietary below grade waterproofing and a third party below grade dimpled membrane.   This system reduces the number of building revolutions while simplifying the below grade installation process.

ArmorWall BG’s innovative properties allow projects to meet and exceed continuous insulation, building code and green certification programs faster and more cost effectively.  ArmorWall BG is manufactured in a near zero waste manufacturing plant in North Carolina.

Key Features of ArmorWall BG Include

  • Insulating the slab with ArmorWall BG brings the transition point between it and the above grade materials to a level above the slab edge, eliminating a seam that is otherwise a vulnerable point for water and moisture intrusion.  Combining BG with another ArmorWall above grade product provides a perfect and seamless transition from below grade to above grade.
  • In cases where a below grade material must project above ground, for example 8″ in some code requirements, ArmorWall BG may meet the required fire ratings – a rarity amongst similar products.
  • ArmorWall BG arrives at the job site with an additional technology – Dorken’s DELTA®-MS dimpled membrane – attached to it, providing an additional layer of water and vapor protection with high compressive strength.
  • Installation does not require specialty below grade trades, which many other products do.  In many of our ArmorWall BG installations, the above grade crew has performed the installation.
  • No paper facing components exist within ArmorWall BG that will promote the growth of mold or mildew as tested by ASTM G21.
  • The Magnesium Oxide (MgO) and hardened urethane insulation components create an incredibly durable exterior sheathing product that withstands post-construction damage to the slab edge often caused by landscaping crews working around the building’s foundation.

ArmorWall BG is the Best Solution for These Building Types

  • All types of commercial and multifamily buildings with below grade foundations or slab edges
ArmorWall BG Product Downloads

ArmorWall BG Guide Spec v3.docxDownload 

For further documentation and details please visit the Downloads Page.

Project Highlights Featuring ArmorWall BG

The North Carolina School of Science and Mathematics saved several days on their project schedule by installing ArmorWall BG around the foundation of the new building.
ArmorWall BG was used as the below grade solution for this Municipal Maintenance Facility in Prior Lake, MN

Know the Advantages of ArmorWall