Mastering the Peak: A Deep Dive into High-Performance Shingle Installation

Image of underlayment for a roof and slate tiles

Table of Contents

The Foundation: OSB Decking and Reinforced Substrate

True roofing experts never build on a shaky foundation. We began this project by ensuring the roof deck was composed of high-quality, properly spaced OSB (Oriented Strand Board). This provides the structural “grip” necessary for fasteners to hold firm against high winds.

The Secondary Shield: Synthetic Underlayment

Instead of old-fashioned felt paper, we utilize GuardMax Synthetic Underlayment.

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Tear Resistance: Unlike felt, this synthetic layer won’t rip or degrade if exposed during the install.

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Moisture Barrier: It provides a critical secondary layer of protection that keeps the wood deck dry even if a shingle is damaged.

Precision Application: GAF Timberline HDZ Architecture

We chose GAF Timberline HDZ shingles for this home. These aren’t just for looks; they feature GAF’s “LayerLock” technology. Our team ensures every nail is driven into the “StrikeZone”—the industry’s widest nailing area—guaranteeing 99.9% nail placement accuracy for a wind warranty that actually means something.

The Finishing Touch: High-Profile Ridge Caps

A common amateur mistake is using standard shingles to cover the peak. As seen in our final photos, we use dedicated Ridge Cap shingles. These are thicker, pre-bent, and specifically designed to handle the high-stress wind loads at the roof’s highest point while providing a beautiful, “high-profile” finish.

Frequently Asked Questions

Architectural shingles (like the Timberline HDZ shown here) are thicker, multi-dimensional, and far more wind-resistant. They offer superior longevity and significantly better curb appeal for your home.
Synthetic underlayment is lighter, stronger, and doesn’t absorb moisture. It lays flatter, which helps the shingles sit perfectly even for a cleaner look.
Absolutely. We inspect the entire deck once the old roof is removed. We never nail new shingles into rotted or soft wood; your safety and the roof’s warranty depend on a solid deck.