Your upstairs is hot in summer no matter what the AC does. Your energy bills keep climbing. Maybe your shingles are curling early, or you smell musty insulation, or you spotted moisture stains on the attic side of your roof deck. Most Hollister homeowners have no idea their attic venting is the problem. You're in the right place — we fix this every week, and it's almost always solvable in a single visit.
What Attic Venting Problems Do You Have?
The most common issues we find are undersized or missing intake vents at the soffits, blocked soffit vents (insulation pushed up against them is the number-one cause), and missing or undersized ridge vents. Even worse is mismatched intake and exhaust — you need both, balanced. Old whole-house fans short-circuit the airflow. Powered attic fans fight the natural ventilation instead of helping it. And then there's moisture and mildew on the underside of the roof deck from Central Coast fog working its way in.
Warning signs include hot upstairs rooms, an ice-cold attic in winter despite no insulation issue, curling or blistered shingles years before they should fail, condensation on attic rafters, peeling exterior paint near the eaves, and an HVAC system that never seems to turn off. DIY fails because attic venting is math: net free area in versus net free area out, sized to attic square footage. Throwing in a single roof vent without fixing the intake makes the problem worse, not better.
Our Attic Venting Services
Attic Venting Installation — full design and install of a balanced ventilation system: continuous soffit intake vents, ridge or static exhaust vents, baffles to keep insulation from blocking the soffits, and replacement of any old powered fans that don't belong on a balanced system. We size the system to your attic square footage and roof pitch, following code and manufacturer specs. Most installs are done in a single day.
Attic Venting Repairs — fixing blocked soffits, replacing failed ridge vents, sealing leaks around vent flashings, removing or replacing broken powered fans, and adding baffles where insulation has been blocking airflow for years.
We start every attic venting job with a free inspection that includes attic entry, photos, and a written report. We'll show you exactly what's wrong before we quote a fix.
Attic Venting for Hollister and Central Coast Homes
Summer heat in inland Hollister, San Juan Bautista, Gilroy, Morgan Hill, Los Banos, and Salinas can push under-vented attics past 140°F, frying shingles from underneath. On the coast, fog moisture in Monterey, Pacific Grove, Carmel, Marina, Watsonville, and Aptos condenses inside poorly vented attics year-round, rotting decking and ruining insulation. Older Hollister homes built before modern venting codes often have no soffit intake at all — just a couple of gable vents trying to do the work of a full system.
Proper venting also matters for your shingle warranty. Manufacturers can void coverage if the venting is wrong. Local matters here because attic venting is climate-specific — what works in Bakersfield is wrong for Pacific Grove, and what's fine in Pacific Grove is undersized in Los Banos.
Why Choose ShieldTop for Attic Venting
GAF and Owens Corning certified — meaning we install venting to the spec their warranties actually require. Free inspection with a written report. $0 trip fee. CSLB C-39 licensed and insured. Workmanship warranty on every install. Locally owned and family-run in Hollister, with same-day response during business hours. Talk to the Hollister roofing contractor who treats venting as part of the roof system, not an afterthought.