Shingle Roofing
San Jose & the South Bay
Architectural asphalt shingle is the most common residential roofing system in the South Bay — and with good reason.
Shingle Roofing
Done Right Since 1952
Architectural asphalt shingle is the most common residential roofing system in the South Bay — and with good reason. It's cost-effective, widely available in colors and styles to match any home, durable against Bay Area weather, and backed by strong manufacturer warranties. Keith Roofing has been installing asphalt shingle since the 1950s, and we hold installer credentials with each of the three big shingle makers: GAF System Plus, Owens Corning Preferred Contractor and CertainTeed SureStart PLUS.
A good shingle roof and a rushed one can look the same from the street. The difference is underneath and around the edges: synthetic underlayment overlapped the way the maker specifies, a rubberized membrane wherever water collects or a pipe comes through, fresh metal at chimneys and skylights, a starter strip along every eave and rake, the right nail count in the right spot, careful hips and ridges, and an attic that breathes well enough to satisfy the warranty. Leave one of those out and the roof wears out sooner, and the warranty may not stand behind it.
Our shingle work covers the full range: full re-roofs on aging housing stock, shake-to-composition conversions on historic homes (with preservation-board coordination where required), premium designer shingles for high-end architecture, and color-matched selective shingle replacement for repair scenarios. We bring physical material samples to every estimate — color and texture look different in natural light than in digital photos — and help homeowners select the right material for their architecture, budget, and long-term goals.
A Complete Guide to Shingle Roofing in San Jose
Why Architectural Shingle Dominates Residential Roofing
Architectural shingles (also called dimensional or laminated shingles) have largely replaced older 3-tab shingle products in quality residential installations. The reasons: substantially better wind resistance (architectural shingles typically rated for 110-130+ mph wind), longer service life (25-50 years vs. 15-25 for 3-tab), better visual aesthetic (dimensional texture that mimics wood shake or slate), and stronger warranty programs. The cost premium over 3-tab is modest — typically 10-20% — but the performance improvement is substantial.
Premium architectural shingles take the category further. CertainTeed Presidential Shake TL, GAF Grand Sequoia, and Owens Corning Berkshire deliver 40-50 year service life with designer aesthetics that approximate cedar shake, slate, or specialty profiles. These add meaningful cost ($2,000-$5,000 on a typical re-roof) but transform the home's appearance.
The Critical Role of Underlayment and Flashing
The shingle is visible, but the underlayment and flashing systems beneath and around it determine whether the roof actually keeps water out. Today's underlayments are woven or spun polymer sheets (GAF Tiger Paw, CertainTeed DiamondDeck and Owens Corning Deck Defense are the ones we use most) that tear less easily than old asphalt felt, tolerate sun while the crew works, and shed water better.
Ice-and-water shield (CertainTeed WinterGuard, GAF StormGuard, Owens Corning WeatherLock) is self-adhering rubberized membrane that creates a secondary waterproof layer at critical areas: valleys (where water flow concentrates), eaves (to protect against ice dams in colder climates and wind-driven rain year-round in the Bay Area), and around all roof penetrations. Skipping ice-and-water shield to save cost is a common shortcut that leads to premature leak failures.
Flashing renewal at every penetration is critical. New step flashing at wall transitions, proper counter-flashing at chimneys (ideally with reglet-set flashing for masonry joints), new pipe vent boots, new skylight flashing kits — all should be renewed with the re-roof rather than attempting to reuse failing older flashings.
Ventilation Requirements
Shingle manufacturer warranties require adequate attic ventilation — typically 1 square foot of net free vent area per 150 square feet of attic floor, balanced between intake (soffit) and exhaust (ridge, gable, or power vents). Under-ventilated attics cause premature shingle failure from heat buildup on south-facing slopes, moisture damage to deck substrate, and can void manufacturer warranty coverage.
When existing ventilation is inadequate, re-roofing is the right time to upgrade. Ridge vent installation adds balanced exhaust. Soffit vent additions or renewals improve intake. Power fans aren't usually our recommendation (they can short-circuit natural convection flow) but occasionally address specific issues.
Signs You Need
Shingle Roofing
Roof is 20+ Years Old
Standard architectural shingles have 25-30 year service life in the Bay Area climate. At 20+ years, evaluation for replacement is appropriate even if no active leaks exist.
Curling, Cupping, or Missing Shingles
Shingle deterioration symptoms — edges curling up, tabs cupping, missing tabs from wind damage — signal the system is approaching or past end-of-life.
Granule Loss in Gutters
Significant asphalt granule accumulation in gutters indicates UV deterioration and reduced waterproof protection. Some granule loss is normal; substantial loss signals end-of-life.
Converting from 3-Tab to Architectural
Many South Bay homes still have original 3-tab shingles — basic material now largely obsolete. Upgrading to architectural shingles substantially improves performance, aesthetics, and warranty.
Converting from Cedar Shake
Many historic homes (particularly in Willow Glen, Rose Garden, Palo Alto) had original cedar shake that's now a fire-code concern. Class A architectural shingle with shake-look profile satisfies both fire code and aesthetic preservation.
Planning Solar Installation
Panels belong on a roof with plenty of life left in it. When the shingles are close to worn out, re-roof before the array goes up so the mounts can be flashed into new material.
Top-Tier Shingles
We Install
CertainTeed Landmark
The shingle CertainTeed builds its line around, with StreakFighter to resist algae streaks and a broad palette of colors. It carries a lifetime limited warranty, transferable for 50 years when installed under SureStart PLUS. A common middle-of-the-road pick at $6-9 per sq ft installed.
CertainTeed Presidential Shake TL
Premium designer shingle with authentic shake-look aesthetic. 50-year warranty, highest-grade architectural profile. Common choice for historic home preservation and premium installations.
GAF Timberline HDZ
GAF's best-selling dimensional shingle. Its LayerLock nailing strip and WindProven coverage address wind, StainGuard Plus carries a 25-year algae warranty, and System Plus extends the limited warranty to 50 years.
GAF Grand Sequoia / Grand Canyon
Premium designer shingles with enhanced dimensional aesthetic. Longer warranties and larger format shingles. Good choice for premium architectural applications.
Owens Corning TruDefinition Duration
Owens Corning's dimensional shingle has a woven SureNail strip across the nailing zone that grips the fasteners harder, plus StreakGuard algae protection and a limited lifetime warranty.
Owens Corning Berkshire / Woodcrest
Premium designer profiles with authentic aesthetic. Higher-end choice for architecturally significant homes.
How We Handle
Your Shingle Roofing
Material Selection with Physical Samples
We bring physical shingle samples to every estimate. Color, texture, and dimensional character look significantly different in natural light on your specific home than in digital photos or showroom displays. Proper sample review prevents regret.
Permit & Schedule
Building permit through your city's permit office. Typical turnaround 3-7 business days. We schedule installation based on permit, material lead time, and weather forecast.
Complete Tear-Off & Deck Inspection
Everything comes off down to the wood. We walk the bare deck for soft or rotted sheathing, cracked rafters and old spaced boards that need solid decking over them, and photograph each repair before it is covered up.
Underlayment, Flashing & Shingle Installation
Synthetic underlayment goes down overlapped to spec, with self-sealing membrane in the valleys, along the eaves and around each opening. Every pipe, vent and wall joint gets new flashing, then the starter strip, the field shingles and finally the hips and ridge.
Final Inspection & Warranty Registration
Building inspector final. Magnetic nail sweep cleanup. Manufacturer warranty registration with SureStart PLUS / System Plus / Preferred Contractor enhancement where applicable. Documentation package delivery.
What You Get
With a Keith Shingle Roof
Three-Manufacturer Certification
Because we are credentialed with GAF, Owens Corning and CertainTeed alike, you can choose a shingle on looks and value and still get that maker's enhanced warranty (30-50 years). A roofer tied to one brand can only offer that brand's program.
Installation Quality Standards
Correct overlaps, membrane where the code and the maker call for it, the specified nail pattern, new flashing and enough attic airflow. A shingle roof only lasts as long as its warranty promises when every one of those layers is done properly.
Honest Material Recommendation
We recommend materials based on your home's architecture, budget, and long-term goals — not based on what's most profitable for us. Often the mid-range architectural shingle is the right answer; sometimes premium is worth it.
73 Years of Local Experience
Decades of installing shingles in the San Jose climate means we know which materials hold up, which installation details matter most locally, and which shortcuts cause problems. Pattern recognition from experience reduces risks.
Recent Shingle Roofing
Projects
Projects Featuring
Our Shingle Roofing Service
Shingle jobs our crews have finished around the South Bay. Open any of them for photos and the details.
Saratoga Landmark Re-Roof
A large Saratoga home stripped to the deck and roofed again in CertainTeed Landmark Series shingles.
View Case Study →
Campbell Tar-to-Shingle Conversion
An old tar-and-gravel roof replaced with 30-year Landmark shingles, with single-ply over the carport and new gutters.
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Campbell New Construction
Premium new construction — 40-year Landmark shingles, standing seam metal accents, copper gutters throughout.
View Case Study →Saratoga Presidential Fire Repair
Fire-damage repair with seamless CertainTeed Presidential shingle tie-in and full gutter installation.
View Case Study →
Castlemont Shingle Re-Roof
A Cambrian Park ranch house taken down to the sheathing and finished in architectural shingles with fresh flashing.
View Case Study →
Willow Glen Historic Shingle
A 2025 re-roof in historic Willow Glen: new architectural shingles over a better underlayment.
View Case Study →