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Shingle Roofing in Walnut Creek, CA

Walnut Creek Roofers installs and replaces asphalt shingle roofs across the East Bay, and every job starts with the same question: is the deck under those shingles still sound. Shingle roofing means stripping the old courses down to the sheathing, replacing rotted plywood, and rebuilding the layers that actually keep water out, including underlayment, flashing, drip edge, and a starter course held with ring-shank nails. Call 9255031377 for a free roof estimate before the next winter storm system finds the weak spot.

Most East Bay homes wear fiberglass asphalt shingles in three-tab, architectural, or designer. Three-tab is lightest and cheapest. Architectural shingles, called dimensional or laminated, carry a heavier granulated surface and hold up better off a roofline here. Some older roofs are wood shake or slate.

Under the shingles sit the parts that matter more: synthetic underlayment, ice-and-water shield along the eaves and valleys, and self-adhered membrane at the penetrations. Step flashing, counter-flashing, and chimney flashing get resealed, and drip edge keeps water off the fascia.

Cost tracks roof pitch, how many layers come off in the tear-off, and whether the sheathing is still solid. Hot, dry summers, hail, and winter rain hit shingle and modified bitumen alike. And mid-century modern, Spanish revival, and contemporary homes all pitch differently.

What's Included

  • Full roof inspection of the decking, underlayment, and flashing, including a rooftop walk and an attic-side look at the roof deck and trusses.
  • Tear-off of the existing shingles, roofing felt, and nails down to the sheathing instead of an overlay.
  • Replacement of rotted plywood or OSB, plus any rafter or ridge beam work we find once the substrate is exposed.
  • New synthetic underlayment, ice-and-water shield at the eaves and valleys, and drip edge along the rake, verge, and overhang.
  • Ridge vent, soffit vent, and attic fan work checked so ventilation keeps insulation dry and stops decay from the underside.
  • New shingles set in staggered courses with ring-shank nails, plus ridge cap, step flashing, and counter-flashing.
  • Gutter and downspout clearing, a magnetic sweep for nails and screws, and debris hauled off in the dumpster.
  • Signs You Need Shingle Roofing

  • Granule loss, where shingle grit washes into the gutter or piles at the bottom of a downspout, meaning the asphalt surface is eroding.
  • Curling, cracking, or missing shingles on south-facing slopes, where summer heat and UV degradation hit hardest.
  • Blisters, alligatoring, or peeling where a coating was rolled on to buy another year, which usually means trapped moisture under the field course.
  • Rust or water stains at the chimney flashing, pipe boot, vent boot, or skylight, and staining under an awning after winter rain, which often means an ice dam is pushing water back under the eave.
  • Sagging or soft spots you can feel from the attic, a sign the sheathing is taking on water and starting to rot and decay.
  • Black tar, pitch, or bitumen smeared near a vent or canopy bracket is a patch, not a repair, and it hides a failing flashing underneath.
  • Our Shingle Roofing Process

  • Inspection. We walk the rooftop, check the roof deck and joists from the attic side, measure moisture, and photograph the flashing, valleys, and any hail damage.
  • Written roof estimate. You get a line-item scope covering shingle squares, underlayment type, flashing work, decking replacement, vapor barrier needs, and disposal.
  • Material selection. We price three-tab, architectural, and designer options, including lines like GAF Timberline HDZ, Owens Corning Duration, and CertainTeed Landmark Pro, then note the wind rating and algae resistance on each.
  • Tear-off and deck repair. Pry bars and roofing shovels strip the old roof, the dumpster gets set, rotted sheathing comes out, we refit any purlin, batten, or counterbatten, and the new assembly meets the local building code for fastener spacing.
  • Installation. Ice-and-water shield, underlayment, drip edge, apron flashing, and boot flashing go on first, then staggered field courses set with a roofing square and air compressor. Flashing edges get hand-sealed with mastic, roof cement, or construction adhesive.
  • Cleanup and walkthrough. Magnetic sweep for nails, gutters cleared, debris hauled away, and a final walk of the perimeter with you.
  • Why Walnut Creek Chooses Walnut Creek Roofers

    Walnut Creek Roofers is a licensed and insured roofing contractor, and we quote the full job, waterproofing details, weatherproofing at the penetrations, and the line-item numbers, before we ask for the work.

    First-Class Service

    Certified installers and a meticulous process from inspection to cleanup.

    Premium Materials

    Top-tier products backed by manufacturer and workmanship warranties.

    Long-Lasting Results

    Built to withstand Walnut Creek's climate for decades of protection.

    Explore Our Other Services

    Shingle Roofing Across Walnut Creek Metro

    We roof across the East Bay in California, from downtown Walnut Creek and Rossmoor to Heather Farm, Castle Rock, and Green Valley, covering everything from a gable or hip roof to a mansard, gambrel, dormer, or parapet with coping and scuppers.

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    Recent Shingle Roofing Projects in Walnut Creek

    Real work, real roofs — a sample of completed jobs

    Completed roofing project
    Roof replacement project
    New roof installation
    Roof repair completed