4023 Canyon Dell Dr, Altadena, CA 91001

Full Roof Replacement with Plywood Re-Sheeting in Altadena

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Project Overview:

Location: Altadena

Full tear-off of the existing roofing materials
Installed new plywood decking throughout
Applied synthetic underlayment (RhinoRoof U20)
Installed new architectural shingles

Challenges Addressed:

Rotted and damaged wood decking
Unsafe roofing structure in key areas
Steep slope and high elevation requiring extra safety measures

Roof Replacement with Plywood Re-Sheeting in Altadena

On September 11, 2025, Roof Repairs CA began a full roof replacement and plywood re-sheeting project at 4023 Canyon Dell Dr, Altadena, CA. This job involved removing the deteriorated roofing materials and replacing them with brand-new, structurally sound plywood decking before applying a premium asphalt shingle system. The home, located in a hillside neighborhood with challenging terrain, required additional care and planning to ensure a safe and efficient installation.

We started by tearing off the aging roof and inspecting the existing decking. Much of it was compromised due to years of water damage and structural wear, so our team installed all-new plywood sheathing to bring the roofing foundation up to standard. This step is critical for long-term roof durability, especially in a climate like Altadena’s where temperature swings and occasional rainstorms are common.

Once the new plywood was in place, we installed RhinoRoof U20 synthetic underlayment to provide superior water resistance and breathability. The final layer consisted of high-quality architectural shingles that were carefully aligned and secured to create a beautiful, watertight roof surface. The process was completed over several days, with constant focus on craftsmanship, safety, and clean-up.

Worker installing shingles on a roof deck.

Workers repairing roof with plywood in mountainous area.

Plywood Re-Sheeting for Lasting Support

Complete Decking Replacement: All compromised wood was removed and replaced with fresh, high-grade plywood.
Improved Structural Integrity: The new decking ensures proper nailing surface and long-term support.

Advanced Underlayment Protection

Synthetic Underlayment Used: RhinoRoof U20 was installed to replace outdated felt.
Weather-Resistant Barrier: Protects the home from wind-driven rain and moisture penetration.

Section Title: Efficient Tear-Off and Clean-Up

Old Roof Removal: Full tear-off of existing roofing and disposal of debris.
Clean Site Practices: Area was cleaned thoroughly during and after the project.

High-Quality Shingle Installation

- Architectural Shingles: Installed with precision for longevity and aesthetics.
- Manufacturer Standards: All materials applied to meet or exceed warranty guidelines.

Finalizing a Quality Roofing Project in Altadena

This roof replacement in Altadena not only resolved underlying decking issues but also provided the homeowner with a roof that will last for decades. Our team at Roof Repairs CA takes pride in attention to detail, especially in hillside properties where safety and material performance are essential.

The transformation is clearly visible—from rotted decking to a clean, new architectural shingle system. This project is a great example of how proper planning and experienced craftsmanship lead to a successful roofing outcome.

If your home needs a roofing upgrade or plywood re-sheeting, trust the experts at Roof Repairs CA. Contact us today to schedule an inspection or request a free quote.