Roof Replacement
in Concord

Roof replacement on a Concord home starts with a full tear-off down to the roof deck, not an overlay over tired shingles.

We inspect the sheathing and cut out any plywood or OSB that has gone soft. Concord building code expects a sound deck before anything new goes on top.

1. Tear-off strips every layer of old asphalt shingle, roofing felt, and tar paper so the decking is visible.
2. Deck inspection catches rot, decay, and sag; rotted plywood or OSB sheathing gets cut out and replaced.
3. Ice-and-water shield, a self-adhered membrane, runs along the eave where ice dam backup and wind-driven rain push water uphill.
4. Synthetic underlayment covers the field and replaces old felt, which wrinkles, tears, and lets water wick sideways.
5. New drip edge goes on the eave and rake before any flashing work starts.
6. Step flashing and counter-flashing seal the valley and sidewalls, while chimney flashing and pipe flashing handle the penetrations.
7. Starter course along the eave, then field course shingles laid in staggered courses with a nail gun and ring-shank nails.
8. Ridge cap and ridge vent close the hip and ridge so the attic can breathe.
9. A dumpster takes the debris, and a magnetic sweep of the lawn follows the last load.
10. Final roof inspection, manufacturer warranty registration, and the city sign-off finish the job.

Concord rooftops fail in a particular order. Summer UV and fire season winds dry out the shingle mat, then winter rain wicks into every gap that opened.

• Asphalt shingle is standard on the 1960s and 1970s ranch-style homes and mid-century tract homes near Willow Pass and Meadow Homes.
• Architectural shingle carries a heavier mat than three-tab shingle and holds color longer under intense sun.
• GAF Timberline, Owens Corning Duration, and CertainTeed Landmark are the architectural shingle lines we quote most often.
• Metal panel roofing, including standing-seam panel and corrugated panel, clips to purlins, battens, and counterbatten framing and sheds debris well.
• Clay tile, concrete tile, and slate last decades, but we check the truss, rafter, joist, and ridge beam before quoting them.
• Wood shake and cedar shake suit older rooflines but need wider gaps and yearly attention.
• Low-slope sections, such as a garage or a dormer roof, take TPO, EPDM, or a PVC membrane instead of shingles.
• A built-up roof or modified bitumen assembly, hot tar and bitumen over reinforcing plies, fits a mansard or gambrel section that sheds water slowly.
• Roof coating over a flat membrane is cheaper than replacement and buys time before a system reaches end-of-life wear.

Gutters and downspouts matter as much as the shingles. A clogged gutter sends water behind the fascia and into the soffit, where it rots the overhang and stains the ceiling inside.

• Apron flashing and boot flashing get replaced at every penetration, never reused, and a cracked pipe boot or vent boot is a guaranteed leak.
• A dormer, parapet, overhang, canopy, or awning changes how water drains, so each one gets its own flashing detail.
• A scupper and coping handle drainage on a flat section sitting behind a parapet wall.
• Soffit vent, ridge vent, and an attic fan keep the attic dry and cut summer cooling load, with insulation and a vapor barrier behind them.
• We seal with mastic, roof cement, adhesive, or a quality sealant and caulk, then fasten with the right screw or fastener for the substrate.
• A snow guard and roof anchor go where Concord Hills roofs hit a steep pitch and weatherproofing matters most.
• Tools on site stay simple: pry bar, roofing shovel, ladder, safety harness, scaffold, air compressor, roofing square.
• A torch only comes out for modified bitumen, since shingle roofs get hand-sealed at the eave, ridge, and verge.
• The gable end, hip line, and overall roofline get squared before the first course is placed.

Every roofer on our crew works residential roofing around Concord, and our roofing services also cover commercial roofing for property managers on flat TPO and modified bitumen systems. Skylight installation on an aging roof is worth doing during a replacement, not after, so we flash it once while the roof is open.

Sustainability in roofing usually means a longer service life and fewer tear-offs rather than a specialty product. Roofing technology has moved toward self-adhered underlayments and lighter membrane systems.

Energy efficiency improves fastest when ventilation and insulation are done right. Green roofing assemblies exist, but on a pitched Concord roof they are rarely the right call.

Roof maintenance tips are simple: clear the gutters, keep the valley clean, and look at the flashing each fall. When the time comes, call (925) 722-4916 for a roof estimate, and every one starts with a roof inspection rather than a guess.