A Non-Gypsum Waterproof Drywall Replacement System for Flood-Prone Areas
The EnduraFlood HORI-COR/I-58 is a waterproof inside corner mounting and finishing trim engineered for use with the EnduraFlood flood-resistant wall system in areas exposed to flooding, storm surge, and high water conditions. Unlike traditional corner finishing materials that can trap moisture and promote mold growth, HORI-COR/I-58 is made from a durable, waterproof inorganic polymer composite that will not absorb water, swell, deteriorate, or support mold growth.
 
Designed specifically as part of the EnduraFlood waterproof drywall system, this inside corner trim creates a clean vertical transition between 5/8" gypsum drywall above and waterproof ENDU-BOARD panels below, providing a decorative finish reminiscent of chair railing.
 
Why Choose HORI-COR/I-58 Instead of Traditional Corner Trim?
Standard corner finishing materials are vulnerable to water damage. Even minimal exposure can result in deterioration, moisture trapping, and conditions that promote mold growth behind the wall. HORI-COR/I-58 offers a true waterproof inside corner trim solution designed for:
Basements
Coastal homes
Flood zones
Hurricane-prone regions
Post-disaster rebuilding projects
Because it is made from a waterproof inorganic polymer composite, HORI-COR/I-58 will not deteriorate after direct water exposure. After a flood event, the trim remains intact and supports easy panel removal for drying and inspection.
 
Key Features
100% Waterproof Construction: Built for direct water exposure
Non-Gypsum, Inorganic Material: Will not rot, swell, or degrade
Mold-Resistant Composition: Inhibits microbial growth
Durable & Lightweight: Strong yet easier to handle than traditional materials
Designed for the EnduraFlood System: Integrates with related components for a complete flood-ready wall assembly
 
Ideal Applications
Residential flood protection upgrades
FEMA compliance improvements
Hurricane and coastal rebuilding
Basement finishing in high-water-table regions