Roof Repair

Trusted Roof Repair Across Marin & Sonoma County

Are you waking up to a rhythmic drip onto the ceiling drywall, staring at a blooming brown water stain in the living room, or finding broken shingles littering your driveway after a strong coastal windstorm? These are undeniable signs that your roofing system has failed, meaning the structural integrity of your home and your interior drywall are actively at risk. At Northern Pacific Roofing, our crews are ready to diagnose and permanently resolve these failures across Marin and Sonoma County.

Roof Leak Detection & Active Leak Repair

Water is notoriously deceptive, and where it drips through your ceiling is almost never where it entered your roof. It can travel for yards along rafters, decking, and underlayment before finally breaking through the drywall. We don't just smear roofing mastic over the suspected area and call it a day.

Our crews pull back the layers to locate the actual breach in the underlayment or plywood decking. We rebuild that barrier from the deck up, ensuring a watertight seal that withstands the heavy atmospheric rivers common to our region. Catching a leak early and fixing it properly is a few hundred dollars; waiting until the water rots out your roof trusses and breeds mold in your attic will cost you thousands.

If our diagnostics reveal that the water is entering through a compromised chimney or vent, we will seamlessly transition into flashing and sealant restoration to fix the root cause.

Common Signs of an Active Roof Leak

• Dark, spreading water stains on interior ceilings or walls.
• Musty odors or visible mold growth in your attic space.
• Dripping sounds behind drywall during heavy rain.
• Blistering or peeling paint near the interior roofline.
• Damp insulation discovered during routine attic checks.

Whether you need immediate intervention or complex diagnostics, our leak repair team handles every call across the region.

Flashing & Sealant Restoration

Nine times out of ten, when we get called out for a localized leak, it is a failure at a roof penetration rather than the shingles themselves. Chimneys, skylight curbs, plumbing vents, and plumbing vent boots require metal flashing and sealants to bridge the gap between the roof deck and the protruding structure.

Thanks to the extreme thermal expansion common in Northern California—where roofs bake in the midday sun and rapidly cool in the evening fog—sealants crack, and metal flashing warps or backs out over time. We remove the compromised materials, install heavy-gauge, manufacturer-specified step and counter flashing, and apply premium weather-rated sealants to lock out moisture permanently.

If the damage extends to the wood framing around these penetrations, wood rot, fascia, and eave repair may also be necessary to restore full structural integrity before we seal the system.

What we check during flashing restoration:

• Step and counter flashing around chimneys for rust or separation.
• Rubber boots on plumbing vents for dry rot and cracking.
• Skylight curbs for degraded mastic and compromised underlayment.
• Wall-to-roof intersections for missing kick-out flashing.
• Exposed nail heads that have backed out of the metal over time.

Count on our flashing and sealant restoration crews to secure your roof's most vulnerable points across San Rafael, San Anselmo, and the wider North Bay.

Damaged Shingle & Concrete Tile Replacement

High winds ripping through the hills and constant UV exposure will eventually degrade even high-quality roofing materials. Curled, brittle, or completely blown-off shingles leave your roof's delicate underlayment entirely exposed to the elements.

For tile roofs, walking on them improperly or impact from falling tree debris can crack the concrete or clay, allowing water to pool underneath. We source premium materials to match your existing roof system, carefully weaving the new shingles or tiles into the current layout so the repair is structurally sound and visually seamless.

If a missing shingle has already allowed water to penetrate the decking, an immediate leak repair response is critical before the next storm hits to prevent interior drywall damage.

When to Replace Shingles and Tiles

• You find broken tile pieces or torn shingles in your yard after a storm.
• Asphalt shingles look bald due to severe granule loss.
• Tiles are cracked, sliding out of place, or completely missing.
• Shingle edges are severely cupping or curling upward.
• You can see the fiberglass matting showing through the asphalt layer.

Restore your home's primary defense layer with damaged shingle and concrete tile replacement throughout the North Bay.

Wood Rot, Fascia & Eave Repair

Roof damage isn't just about shingles; it is often about the structural wood holding everything together. When gutters back up, or when a roof lacks a proper drip edge, water wicks backward into the fascia boards and rafter tails.

Homeowners usually notice peeling paint on the eaves, but when you poke it, the wood simply crumbles. This dry rot compromises the structural integrity of your roofline, especially in our damp, coastal fog corridors where fungal growth accelerates. We cut out the rotted wood entirely, install fresh, treated lumber, and properly integrate a new drip edge system to ensure water falls cleanly away from the house moving forward.

If the rot has reached the valleys where two roof slopes meet, we seamlessly transition into roof valley and drainage repair to fix the entire flow of water across that section of the home.

Key indicators of wood rot along the roofline:

• Sagging or detached gutters pulling away from the fascia.
• Spongy, crumbling wood visible under the eaves.
• Discolored or peeling paint on exterior trim boards.
• Visible termite damage or wood-destroying pest activity in damp areas.
• Dark water stains running down your exterior siding.

Protect your roof's structural framing with dedicated wood rot, fascia, and eave repair solutions.

Roof Valley & Drainage Repair

The valleys of your roof—where two sloping sections meet—handle the highest volume and velocity of water during a storm. They are also magnets for pine needles, leaves, and debris that accumulate over the dry season.

When a valley gets clogged, or when the underlying metal valley flashing rusts out from trapped moisture, water forces its way sideways under the adjacent shingles. We clear out the structural bottlenecks, strip the valley down to the deck, and install high-grade ice-and-water shields alongside new, corrosion-resistant valley metal to restore unobstructed water flow.

If the surrounding materials were damaged during the blockage, we will perform damaged shingle and concrete tile replacement to ensure the entire section is watertight and aesthetically matched to the rest of the house.

Why Roof Valleys Fail

• Accumulated debris dams up water, forcing it upward under the shingles.
• Exposed metal valley flashing corrodes from coastal salt air and trapped moisture.
• Improper original installation lacked a continuous ice-and-water shield.
• Heavy foot traffic during maintenance cracked the materials in the valley center.
• High-velocity runoff scoured the granules off the shingles lining the valley.

Keep water flowing off your home safely with comprehensive roof valley and drainage repair services.

The Northern Pacific System-Based Approach to Roof Repair

When we pull up to your property, we aren't looking for a quick patch-and-flip. Since Barry and Kathi Murrin founded Northern Pacific Roofing in 2002, our crews have operated on the "Own Home" standard. We engineer every repair with the exact same meticulous care and premium materials we would use on our own houses.

We view your roof as a complete, interconnected exterior system. If you have a leak, we are looking at the ventilation, the underlayment, and the flashing to ensure we are solving the root cause, not just masking a symptom. As a GAF Master Elite and Malarkey Emerald certified contractor (CA Lic. #812250), we adhere strictly to manufacturer specifications so your warranties remain fully intact.

We are fully licensed, insured, and deeply committed to protecting your property. That means maintaining the cleanest jobsite in the North Bay. Before we even pull a single shingle, your landscaping, driveway, and siding are protected, and we perform daily debris cleanups to ensure your family and pets remain safe from stray nails and debris.

Comprehensive Exterior Protection

Sometimes, what looks like a simple repair uncovers a system that is too degraded to patch effectively. If your roof's underlayment is failing universally, we may recommend exploring Roof Replacement to secure the home's envelope permanently. To catch these issues before they escalate, routine Roof Inspection is critical for identifying hidden wear and tear before the rainy season begins.

If the water intrusion has bypassed the roof and damaged the exterior walls, our crews are fully equipped to handle James Hardie Siding. Furthermore, for homes with complex flat roofs, walk-decks, or recurring moisture issues, our specialized Waterproofing services ensure that every horizontal surface on your property is completely sealed against the elements.

Stop the Damage Before It Spreads

A compromised roof does not heal itself—it only gets more expensive the longer you wait. Do not let a minor flashing issue turn into a major structural nightmare during the next heavy atmospheric river. You need a permanent, engineered solution from a local team that stands behind their work and understands the unique weather challenges of the North Bay.

Protect your home and your family today. Reach out to the experts at Northern Pacific Roofing to schedule a comprehensive evaluation of your roof, or call (415) 456-3482.