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StoPowerwall® HI

StoPowerwall® HI

StoPowerwall® HI is a stucco wall assembly with continuous air and water-resistive barrier and moisture drainage. It combines the strength and durability of traditional stucco with StoGuard moisture protection and Sto Armor Mat XX Mesh for additional reinforcement and impact resistance and is engineered to meet the testing requirements for large and small missile impacts.​

System Component Drawing:

Accessory Products

*Refer to Product Bulletin for specific information on the proper use, handling, application and limitations of StoSeal STPE Sealant.

System information:

1 Steel Frame (6-18 gauge)
2 Sheathing: National Gypsum eXP (5/8 inch)
3 Armor Mesh: Sto Armor Mat XX Mesh
4 Basecoat: Sto BTS Xtra
5 Air and Water-Resistive Barrier - Wall Membrane: Sto Gold Coat – Substrate Driven
6 StoGuard Detail Component - Sheathing Joints : Sto RapidGuard®
7 StoGuard Detail Component - Rough Opening Protection: Sto RapidGuard®
8 StoGuard Detail Component - Penetrations: Sto RapidGuard®
9 StoGuard Detail Component - Movement Joints and Substrate Transitions: StoGuard Transition Membrane
Bulletin PDF
10 Building Paper: Type D, No. 15
11 Galvanized Expanded Metal Lath (2.5lb/yd2)
12 Sto Stucco: StoPowerwall Stucco
13 StoPowerwall Stucco Finish Options: StoPowerwall Finish Selector
Hurricane Impact - 6H.01

Hurricane Impact - 6H.01


Sto Hurricane Impact (HI) Systems provide a full range of exterior cladding options to protect against hurricane and tropical storm winds, water intrusion, and windborne debris, a major cause of building envelope failure. This system meets Miami-Dade County, Florida criteria for impact resistance, air and water infiltration, and wind load resistance.

Sto Hurricane Impact Systems – S556E
File Ref.# S565E
StoSeal STPE Sealant
File Ref.# S 993
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What’s the best Sto Wall System for your project? Find it with our NEW Sto Wall Selector Tool.