---
title: HydraShell™ Premium Installation
description: "**Step 1**: Lay out horizontally on the eave, printed side up, with minimum 4” horizontal laps and 6” vertical laps. **Step 2**: Fasten with corrosive-resistant roofing nails with a minimum head diameter of 3/8 inches or plastic capped roofing nails…"
url: "https://marcoindustries.com/installation-questions/hydrashell-premium-installation/"
updated: "2023-10-05"
category: Underlayment
---

# HydraShell™ Premium Installation

**Step 1**: Lay out horizontally on the eave, printed side up, with minimum 4” horizontal laps and 6” vertical laps.

**Step 2**: Fasten with corrosive-resistant roofing nails with a minimum head diameter of 3/8 inches or plastic capped roofing nails with a minimum plastic cap diameter of 1 inch, according to pre-printed nail pattern.