Backup Wall System

Different climates require different combinations of wall components for ideal protection and energy efficiency. StoEnergy Guard™ backup wall system was specifically created to align with the latest in building science and the new building code regulations that support both green building and moisture protection across all climate zones, from cold to hot and humid.

StoEnergy Guard Backup Wall System

A single-source, tested and warranted solution that complies with building codes.

Building industry experts recognize the need for an air barrier, continuous insulation and better drainage in walls beyond today’s typical construction. Industry organizations have written new codes to address the needs, and government agencies are enacting new policies to ensure compliance. More than ever, the time is right for StoEnergy™ Guard’s proven backup wall protection.

Key Components of the StoEnergy Guard System

Sole-Source, Seamless Assembly

Joint & Rough Opening Protection

Prevents Air Movement

Waterproof Air Barrier

Eliminates Thermal Bridges

Continuous Insulation

Evacuates Moisture and Water

Drainage Mat & Cavity


System Features

Waterproof Air Barrier
Protects the wall from moisture intrusion minimizing risk of water damage and associated repair costs.

High R-Value
Continuous insulation with high R-values provides significant energy cost savings by eliminating thermal bridging.

Flexible System
Components work in flexible combinations and for most cladding types (thin brick, stone veneer, vinyl siding, etc…).

Advanced Cavity Wall Design
Promotes drainage and drying behind almost any wall cladding.

No Mechanical Fasteners
No penetrating nails or screws to attach the insulation means no thermal bridging.

Code Recognized
Complies with both ICC and IECC code requirements for continuous insulation.

NFPA 285 Fire Tested Assembly
Tested as an assembly to meet NFPA
285 and other fire test criteria for steel
frame with gypsum board and CMU.


StoEnergy Guard

A complete, code compliant solution designed for a variety of claddings.


The StoEnergy Guard™ Backup Wall System provides the rough opening protection, waterproof air barrier, drainage and continuous insulation elements your walls need to be code compliant, energy-efficient and durable. This high-performing solution from Sto ensures high quality components and compatibility, and is backed by Sto’s extensive system warranty.



ts-awesome-file-text-o  StoEnergy Guard™ Brochure – S833

ts-awesome-file-text-o  StoEnergy Guard™  for Adhered Masonry Veneer Brochure – S841

ts-awesome-file-text-o  StoEnergy Guard™ Fire Tested Assemblies – S847


ts-awesome-file-text-o  StoEnergy Guard™ for Concrete Masonry and Frame Wall Construction A5000E

Cement Stucco


Brick Veneer


Stone Veneer


Support Documents


Related Links

Air & Moisture Barriers

Explore our StoGuard® family of Air & Moisture Barriers.

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Browse our vast collection of finishes used with Stucco Systems.

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Sto building projects.

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Operating Hours:
Monday-Friday | 8:00 am – 5:00 pm (EST)


Sto Corp.
3800 Camp Creek Parkway SW
Building 1400 • Suite 120
Atlanta, GA 30331
Phone 1 (800) 221-2397
Fax (404) 346-3119