Composite Asphalt Shingle in Renton, Washington: overhead view of new roof and front of house

This new roof in Renton, Washington, was installed with CertainTeed Landmark Composite Asphalt Shingles in Moire Black.

Three Tree Roofing's Installation Process for CertainTeed Landmark Shingles on your Home

This is a walk through of what you can expect when Three Tree Roofing shows up for your roof replacement. This article is part of a larger series, Three Tree Roofing's "Roofing 101". In this Roofing 101 article, we walk-through our roof installation process of CertainTeed Landmark Composite Asphalt Shingles on the roof of a residential home.

We hope you enjoy this article. If you are in Seattle or the Puget Sound Area and have question about your roof, please contact us online or call us at (206) 312-7663 (ROOF). Now on with the show!


Step 1: Safety First

Here at Three Tree Roofing, safety is our utmost priority. We go through a safety checklist to make sure everyone is following protocol for a safe installation, as well as have all of the tools and safety equipment necessary to make sure a job goes smoothly. Here we double check the plywood status to see if any plywood needs to be replaced. This creates a strong foundation for our underlayment and shingles.

Step 2: Perimeter Metals and Underlayment

Now that we have inspected our roof deck, it is time to install the under the gutter edge metals and synthetic underlayment. This helps protect the plywood from water damage.

Step 3: CertainTeed Landmark Shingle Installation

Now it is time to install our CertainTeed Landmark shingles. We follow CertainTeed’s factory certified methods of installation to secure your roof and uphold an outstanding 50-year material warranty, as well as a manufacturer backed 25-year workmanship warranty on all our labor.

Step 4: Installing a Ridge Vent and Mountain Ridge Shingles

Lastly, we will install a ridge vent system to allow for optimal ventilation. This allows for air to exhaust throughout the entire ridge, allowing the whole attic to breath and mitigate condensation damage. We then cap this with a sturdy mountain ridge shingle.


We hope this article was educational and provided a clear view of what you can expect when Three Tree Roofing replaces your roof. If you enjoyed this article, check out our other Roofing 101 articles:

If you are a customer and scheduled for a new roof, we look forward to seeing you, installing your new roof, and you seeing your home with it's new roof. If you are in Seattle or the Puget Sound Area and in need of a new roof, we hope you consider us for your roof replacement. For a no pressure free estimate contact us online or call us at (206) 312-7663 (ROOF).