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We handle the full range of roofing services — from emergency repairs after a storm to complete tear-offs and new installations. Our crews are local, background-checked, and trained to work on the steep slopes common in Mill Valley homes.

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(555) 000-0000
Open Mon–Sat 9–7:30
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(555) 000-0000
Open Mon–Sat 9–7:30
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Modified Roofing in Mill Valley

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Roof Replacement Process

We begin with a thorough inspection of your roof's structure and layers. This tells us exactly what needs to come off and what can stay. For most Mill Valley homes, a full tear-off takes one to two days, followed by underlayment and new shingle installation.

Your modified roofing system is built to handle Mill Valley's wet winters and dry summers. We apply multiple layers of bitumen and reinforcing fabric for a seamless, leak-resistant membrane. This method typically adds 20–30 years of reliable protection to your home.

Advantages

Tear Resistant

The reinforced fabric in modified roofing resists punctures from falling branches and foot traffic. We've installed this system on over 200 Mill Valley homes since 2015. You can expect a durable surface that stays watertight even after heavy storms.

Waterproof

Modified roofing creates a monolithic waterproof barrier with heat-welded seams. No exposed fasteners means no leak points. This is especially effective on low-slope roofs common in Mill Valley's modern and mid-century homes.

Energy-Efficient

White or light-colored modified membranes reflect solar heat, reducing your attic temperature by up to 20°F in summer. Your HVAC system works less, and you save on cooling costs. Many Mill Valley homeowners see a 10–15% drop in their energy bills.

Why Choose Modified Roofing

Quality Material

We source modified bitumen from GAF and CertainTeed — manufacturers with 50+ years of proven performance. Each roll meets ASTM standards for tensile strength and weather resistance. Your roof gets factory-tested materials, not generic substitutes.

Fully Insured

Millvalley Roofing carries $2 million in general liability insurance and full workers' comp. We provide certificates before any job starts. You're never liable for accidents on your property.

Guarantee

Every modified roof we install comes with a 15-year workmanship warranty. Manufacturer warranties cover material defects for up to 30 years. If a seam fails or a blister appears, we fix it at no cost to you.

Before & After Gallery

Your modified roofing system is built to handle Mill Valley's wet winters and dry summers. We apply multiple layers of bitumen and reinforcing fabric for a seamless, leak-resistant membrane. This method typically adds 20–30 years of reliable protection to your home.

Words From Beneficiary

Better than expected

Entire crew was very professional — went above & beyond in service. Roof looked great and the clean-up was thorough. Highly recommend Millvalley for any roofing project.

Roof Replacement

Better than expected

Entire crew was very professional — went above & beyond in service. Roof looked great and the clean-up was thorough. Highly recommend Millvalley for any roofing project.

Roof Replacement

Better than expected

Entire crew was very professional — went above & beyond in service. Roof looked great and the clean-up was thorough. Highly recommend Millvalley for any roofing project.

Roof Replacement

Better than expected

Entire crew was very professional — went above & beyond in service. Roof looked great and the clean-up was thorough. Highly recommend Millvalley for any roofing project.

Roof Replacement

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