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NEW Sto Fireblocking Solution to Meet 2022 New York City Building Code

Hurricane Impact Systems

Sto Hurricane Impact (HI) Systems provide a full range of exterior cladding options to protect against hurricane and tropical storm winds, water intrusion, and wind-borne debris which is a leading cause of building envelope failure. All of Sto’s Hurricane Systems meet the stringent Miami-Dade County, Florida NOA criteria for impact resistance, air and water infiltration, and wind load resistance.

Hurricane Impact Systems – Detail Booklet

Our Hurricane Impact Systems

StoTherm® ci HI-LM 180
StoTherm® ci 1177 -LM
StoTherm® ci 1177-SM
StoTherm® ci HI-PLY
StoPowerwall HI

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Key Features of Sto Hurricane Systems

  • Available for a variety of construction types.
  • Wide range of aesthetic possibilities.
  • Competitively priced with other building envelope systems. 
  • Fire-resistance rated wall assemblies. 
  • Lightweight and easy to install. 
  • Backed by Sto warranties. 

StoTherm® ci HI-LM 180

Large and small missile impact continuous insulation wall system over CMU​

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FEATURES

MAXIMUM DESIGN PRESSURE, PSF: ± 180
SUBSTRATE TYPE: Minimum 8 inch CMU.

StoTherm® ci 1177 -LM

Large and small missile impact continuous insulation wall system

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FEATURES

MAXIMUM DESIGN PRESSURE, PSF: ± 150 – National Gypsum eXP
± 150 – USG Securock
± 120 – Continental Weather Defense
SUBSTRATE TYPE: ASTM C-1177 gypsum-based sheathing.

StoTherm® ci 1177-SM

Small missile impact continuous insulation wall system

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FEATURES

MAXIMUM DESIGN PRESSURE, PSF: ± 150 – National Gypsum eXP
± 140 – USG Securock
± 120 – Continental Weather Defense
SUBSTRATE TYPE: ASTM C-1177 gypsum-based sheathing.

StoTherm® ci HI-PLY

Large and small missile impact continuous insulation wall system over plywood sheathing​

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FEATURES

MAXIMUM DESIGN PRESSURE, PSF: ± 100 – CDX Plywood with Wood Studs
± 150 – CDX Plywood with Steel Studs
SUBSTRATE TYPE: 5-Ply CDX Plywood  sheathing.

StoPowerwall® HI

Large and small missile impact stucco wall assembly​

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FEATURES

MAXIMUM DESIGN PRESSURE, PSF: ± 100
SUBSTRATE TYPE: National Gypsum eXP
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