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Asphalt Shingle Roofing Contractor in the Bay Area
Hamilton Exteriors installs asphalt shingle roofing with GAF shingles. The job includes tear-off, deck repairs, underlayment, leak barriers, flashing, ventilation, and inspection. Serving the Bay Area and Greater Sacramento.
500+ projects
Since 2018
50-Year
GAF System Warranty
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Roofing certifications and contractor credentials
Customer-Service Obsessed
Responsive from consultation through project closeout
Architect and general contractor
One accountable team
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Verified business credentials
An asphalt shingle roof is a layered assembly. We inspect the roof shape, drainage, ventilation, penetrations, existing materials, and accessible deck conditions before selecting the GAF shingle system and related installation details.
Tear-off exposes the deck so affected sheathing and attachment areas can be repaired. The new assembly can then connect underlayment, leak barriers where specified, flashing, starter materials, GAF shingles, ventilation, and ridge details from a known surface.
The shingle profile and color matter, but they cannot correct weak deck areas or poor flashing. We settle those assembly details before ordering the visible GAF shingles. This keeps appearance choices tied to a roof that can drain, ventilate, and close around penetrations correctly.
How We Install an Asphalt Shingle Roof
The shingle selection and every layer below it must work as one roof assembly.
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Inspect and Specify the Roof
We document roof geometry, ventilation, penetrations, drainage, access, and visible damage. The review sets the GAF shingle system and installation scope.
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Tear Off and Prepare the Deck
The crew removes old roofing and inspects the exposed sheathing. Damaged decking is replaced before underlayment and leak barriers begin.
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Install the Complete Assembly
We install flashing, ventilation, starter materials, GAF shingles, and ridge details. The project continues through required inspections and closeout.
Asphalt Shingle Roof Assembly
| Layer or Detail | Primary Role | What We Review |
|---|---|---|
| Roof deck | Supports the assembly | Condition and attachment |
| Leak barriers | Protect specified vulnerable areas | Edges, valleys, and penetrations |
| Underlayment | Adds a water-control layer | Compatibility and coverage |
| Flashing | Protects transitions | Walls, valleys, vents, and edges |
| GAF shingles | Forms the exposed roof covering | Profile, color, and layout |
| Ventilation | Moves air through the planned path | Intake, exhaust, and roof geometry |
Choose the GAF Shingle Within a Full System
Color and profile matter, but the surrounding assembly controls how the roof handles water. We coordinate the GAF shingle choice with underlayment, flashing, ventilation, edges, and ridge details.
Use Tear-Off to Review the Deck
Old roofing can hide sheathing damage and previous repairs. Tear-off reveals the base before new layers begin. We document affected areas and complete approved deck work first.
Detail Every Roof Transition
Shingles cover the main roof planes. Valleys, walls, chimneys, skylights, vents, and edges need separate flashing details. We connect these transitions with the same roof assembly and carry the work through required inspection.
Asphalt Shingle Roof Financing Options
Asphalt shingle roof costs can include tear-off, deck repairs, underlayment, leak barriers, flashing, ventilation, permits, and installation. Financing is available with approved credit for eligible roofing costs. During your consultation, we explain available terms, eligible work, and payment timing.
Ask about asphalt shingle roof financing during your consultation.
Call Now (650) 977-3351 Asphalt Shingle Roofing Reviews
Homeowner feedback from completed roofing projects.
Chandra Williams
a week ago
Roof City did an excellent job on my roof. They were professional, fast, efficient, and clean. They over- delivered on their promise to do a five- star job in two days, which included all materials and permits needed. They deserve a 10 star rating 🌟 ✨ 💫🌟✨💫🌟✨💫☀️🙌🏾😀👍🏾
Abe Mendoza
a month ago
Very Satisfied with Hamilton Exteriors work replacing roof. Good price and flexible payment plans. They took care of the permits and cleanup. Great communication and response times. Highly recommend.
Ernesto Garlitos
a month ago
The team dis an excellent job on our roof. Carlos and his team are punctual, communicative and kept the worksite clean throughout the project. There was a slight delay in the beginning but the whole process felt smooth and stress free. Alex was generous enough to add in extra service worth $759. Highly recommended, honest roofing work.
Laarni yet
a month ago
They offered a reasonable price for my roof replacement, and overall I’m satisfied with the work. The main issue was that it took quite a while to finish because of the permit process. At one point, I was worried that the roofing materials left at the property might be stolen, so I texted them about it. They responded to my message right away, which I appreciated, and luckily nothing was stolen. Overall, the price was fair, they were responsive when I had concerns, and the project was completed.
Frequently Asked Questions
Didn't find the answer to your question? Call Now (650) 977-3351
What is included in an asphalt shingle roof system?
The assembly can include the deck, underlayment, leak barriers where specified, flashing, starter materials, GAF shingles, ventilation, and ridge details. The exact scope follows the roof conditions.
How do I choose a GAF shingle color and profile?
We compare available profiles and colors with the home's roof shape, exterior materials, and visible roof area. The final selection must remain compatible with the specified assembly.
Why does tear-off matter for asphalt shingles?
Removing old roofing gives direct access to the deck and existing flashing. The crew can document affected sheathing and prepare a known surface for the new layers.
How is roof ventilation handled with asphalt shingles?
We review visible intake, exhaust, attic conditions, and roof geometry. The ventilation scope is coordinated with the new roof rather than added after shingle installation.
What flashing details need attention?
Valleys, sidewalls, chimneys, skylights, vents, and roof edges interrupt the shingle field. Each transition needs a compatible water-control detail within the complete assembly.
Can damaged decking be covered by new shingles?
Affected sheathing must be identified and included in the approved repair scope before underlayment covers the deck. A sound base supports the new roof assembly.
Get Your Asphalt Shingle Roofing Quote
Tell us about your project. We usually call within 3–5 minutes.
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Roofing Services by City
21634 Redwood Rd Unit F, Castro Valley, CA 94546
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