Hours
Mon–Fri, 7:30 AM–5:00 PM; Sat, 9:00 AM–1:00 PM
Phone
(408) 363-8052Address
9670 Monterey Rd, Morgan Hill, CA 95037
Mon–Fri, 7:30 AM–5:00 PM; Sat, 9:00 AM–1:00 PM
9670 Monterey Rd, Morgan Hill, CA 95037
Gilroy Roofing Services
Gilroy roofing projects need both service clarity and local permit awareness. A leak call can cross the 100-square-foot repair threshold, an overlay needs a pre-roof inspection, a heavier assembly can trigger roof-weight review, and skylights or structural changes can widen the permit path.
Winter Roofing helps Gilroy owners plan roof repair and leak diagnostics, roof replacement and re-roofing, inspections, drainage, skylights, and commercial low-slope work with the City's GO Permit workflow, inspection sequence, and local roof conditions in mind.
Gilroy's March 23, 2026 reroof handout applies the 2025 California Building Standards Code set, including the CBC, CRC, CALGreen, California Energy Code, and Gilroy Municipal Code.
Gilroy uses GO Permit for applications, plan review, inspection status, and inspection scheduling, so the cleanest projects define repair, reroof, skylight, drainage, and structural scope before filing.
Gilroy is in California Climate Zone 4, and the City's published criteria call out 92 mph wind design speed, Exposure C, 1.5 inches/hour maximum rainfall intensity, Seismic Design Category D, and no ground snow load.
The local reroof handout says roof repairs over 100 square feet require a permit, so leak diagnostics should separate a small repair from work that crosses into permitted repair scope.
Gilroy allows roof covering over only one existing layer, requires a permit, and requires a pre-roof inspection before the new covering is installed.
Much of Gilroy is not WUI, but Residential Hillside and mapped fire-hazard areas can add Class A roofing and ember-safe vent expectations.
Core services
The best Gilroy scope starts by separating the actual service need from the permit and inspection implications. These are the roof services Winter Roofing most often connects to local reroof, repair, drainage, skylight, and commercial roof details.
Best for tracing flashing failures, roof-edge leaks, skylight leaks, valley debris, pipe boots, wind-lifted shingles, and localized repairs that may need a permit once the repair area exceeds 100 square feet.
Roof repair and leak diagnostics in GilroyUseful when the decision turns on tear-off versus overlay, deck condition, assembly weight, manufacturer instructions, inspection sequencing, and whether the new roof changes material class or loading.
Roof replacement and re-roofing in GilroyFor low-slope and mixed-slope buildings where cool-roof triggers, drains, curbs, penetrations, perimeter securement, and maintenance records matter as much as the membrane selected.
Commercial roofing support for Gilroy buildingsHelpful before GO Permit filing, after storm or wind exposure, before covering work, and when the owner needs a written scope that separates repair, reroof, drainage, skylight, and deck issues.
Roof inspections and condition reportsFocused on gutter-line flashing, fascia staining, outlet sizing, valley discharge, overflow routes, downspout release points, and roof-edge drainage under Gilroy's 1.5 inches/hour rainfall design criterion.
Gutters, downspouts, and drainage improvementsFor leak troubleshooting, replacement planning, and new openings where Gilroy's plan or separate-permit triggers, roof slope, roof material, curb/deck mount choice, and integrated flashing all need to align.
Skylights, sun tunnels, and flashing workPractical seasonal maintenance for valley debris, edge conditions, skylight flashings, attic ventilation, hillside/open-space debris exposure, and commercial drains or penetrations.
Preventative roof maintenance planningRepair and leak diagnostics
A Gilroy roof leak should be diagnosed by source before anyone assumes the answer is a full reroof. Localized roof repair and leak diagnostics should check flashings, skylight curbs, valleys, pipe boots, roof edges, gutter lines, and low-slope tie-ins, then determine whether the repair area crosses the permit threshold.
A small flashing repair may stay simple, but Gilroy's 100-square-foot repair threshold means a broader repair area should be scoped, documented, and routed through the proper permit path before work grows in the field.
The first question is whether the leak starts in the field roof or at a transition: roof-to-wall flashing, skylight curb, pipe boot, valley, gutter line, low-slope tie-in, or roof edge.
Gilroy's local criteria combine Exposure C wind assumptions with winter and spring storm risk, so edge lift, debris-packed valleys, and transition flashings deserve a closer look after weather events.
Reroof planning
Gilroy roof replacement and re-roofing decisions should be made before tear-off starts: overlay or tear-off, existing layer count, deck condition, sheathing, underlayment, flashing, assembly weight, product data, and inspection timing all affect the final scope.
Overlay is not automatic. Gilroy requires a permit, allows covering over one existing layer only, and expects the existing covering to be suitable, with curled, loose, buckled, or blistered material corrected before covering.
Gilroy reroof applications call for roof area in squares, slope, existing and proposed materials, underlayment, tear-off or overlay status, plywood type and thickness, and the assembly weight including sheathing and roofing material.
For permit applications, plan review, inspection status, and inspection scheduling, Gilroy routes the project through GO Permit. A cleaner intake depends on describing the actual roof work instead of hiding skylights, weight changes, drainage corrections, or deck repairs inside a generic reroof label.
Manufacturer installation specifications need to be available at the job site for inspection, so product substitutions and detail changes should be settled before the roof is covered.
For permit applications on or after January 1, 2026, California Energy Code rules can apply when a qualifying residential roof alteration replaces more than 50% of the roof exterior surface or adds a new layer. For existing nonresidential low-slope roofs, Gilroy calls out cool-roof compliance when the roof is replaced, recovered, or recoated.
Plans and structural review
The simple reroof path works best when the roof covering changes without new openings, structural changes, heavy assembly changes, or appearance-sensitive review. These scope items should be screened before GO Permit filing and before materials are ordered.
Proposed skylights or structural changes can move a reroof out of simple over-the-counter handling. Gilroy says plans may be required, a separate permit may be needed, and framing plans or structural calculations can be part of review.
If the new roof assembly exceeds 7.5 pounds per square foot, including sheathing and roofing material, Gilroy may require added framing or support information, structural-engineer review, calculations, and possible framing modifications.
Commercial and historic buildings can need Planning approval for reroof materials consistent with the original design, so material changes should be screened before filing.
Residential Hillside areas on the west and southwest side of Gilroy, plus mapped WUI Fire Area properties, can require minimum Class A roofing for material alterations, repairs, and replacements, with fire/ember-safe vents where required.
Inspection sequence
Gilroy requires permitted work to remain accessible and exposed until approved. Keep the permit, approved plans when applicable, and manufacturer installation specifications available on site so the inspection record matches the work being covered.
| Project scope | Before covering | Extra checkpoint | Closeout |
|---|---|---|---|
| Overlay over one existing layer | Pre-roof inspection before the new covering is installed, with existing covering suitability checked first. | Correct curled, loose, buckled, or blistered material before covering. | Final inspection after the roof is complete and accessible. |
| Tear-off without new sheathing | Pre-inspection after old roofing is removed and damaged plywood or framing has been replaced. | Keep the work exposed until the required inspection is approved. | Final inspection after installation is complete. |
| Tear-off with new sheathing | Pre-inspection after tear-off and damaged framing or plywood replacement. | Sheathing-nailing inspection before the roof is covered. | Final inspection after the roof system is complete. |
A pre-filing roof inspection and condition report can help identify which row the project really belongs in before the old roof is opened.
Materials and details
Gilroy's Climate Zone 4 setting, 92 mph Exposure C wind design, 1.5 inches/hour rainfall design criterion, roof-weight review, and Residential Hillside/WUI distinctions all change how roofing material options should be discussed.
Gilroy shingle work should connect slope, underlayment, cool-roof review, manufacturer instructions, and wind-exposed roof edges instead of treating shingles as only a color choice.
Tile planning in Gilroy is partly a structural conversation because visible tile, underlayment, battens, flashing, deck condition, and roof weight all interact.
Gilroy's commercial low-slope work should focus on membrane choice, drainage, perimeter securement, penetrations, and cool-roof compliance when replacement, recover, or recoat scope triggers review.
Gilroy does not need a separate unverified gutter-permit claim. The stronger local angle is how roof-edge drainage, flashing, fascia, valley discharge, and downspout release points affect roof performance.
Skylights in Gilroy are both a water-management detail and a permit-scope detail, especially when a new opening or structural change is part of a reroof.
Gilroy ventilation notes belong in reroof planning because attic heat, moisture, roof aging, pests, and fire-area vent requirements can all affect the finished assembly.
Commercial and low-slope
Gilroy commercial roofing support should be specific to the roof assembly and drainage layout. For low-slope roofs, the practical questions are whether cool-roof review applies, how water exits the roof, and whether penetrations, equipment curbs, edges, and terminations are maintainable.
Winter Roofing connects commercial roofing support with low-slope material planning, including TPO and PVC roofing systems where those assemblies fit the exposure, drainage, repair, recover, or replacement scope.
Residential Hillside and WUI
Gilroy should not be written as though every property is in WUI. The more accurate approach is to verify the address and scope: much of the city is non-WUI, while Residential Hillside areas on the west and southwest side and mapped fire-hazard areas can carry Class A roofing and ember-safe vent requirements.
The useful roofing discussion is address-specific: roof material fire rating, vent type, debris exposure near open-space edges, gutter and valley maintenance, and whether the permit record needs Fire Marshal-related coordination.
Maintenance planning
Gilroy's severe winter and spring storm context, hillside drainage concerns, dry-season fire conditions, and open-space interface areas make preventative roof maintenance planning more useful when it focuses on details instead of generic roof-age claims.
Permit requirements, inspection steps, design criteria, climate-zone facts, and WUI distinctions should be checked against the current official source before filing or changing scope.
Gilroy's reroof requirements say roof repairs over 100 square feet require a permit. Smaller source-specific repairs should still be scoped carefully because a leak diagnosis can grow once the roof is opened.
Sometimes, but not automatically. Gilroy allows covering over only one existing layer, requires a permit, and requires a pre-roof inspection before the new roof covering is installed. The existing covering also has to be suitable.
Overlay projects need a pre-roof inspection and final. Tear-offs without new sheathing need a pre-inspection after old material is removed and damaged plywood or framing is replaced, then final. Tear-offs with new sheathing also need a sheathing-nailing inspection before the roof is covered.
It can. Gilroy says proposed skylights or structural changes require plans and may require a separate permit, so skylight work should be planned before permit filing and material ordering.
If the new roof assembly exceeds 7.5 pounds per square foot, including sheathing and roofing material, Gilroy may require additional framing or support information, structural calculations, engineer review, or framing modifications.
They can. Gilroy is in California Climate Zone 4, and statewide energy rules can apply to qualifying residential roof alterations. Gilroy also calls out cool-roof requirements for existing nonresidential low-slope roofs when they are replaced, recovered, or recoated.
No. Do not assume a citywide Class A requirement from the WUI language. Gilroy's reroof handout ties minimum Class A roofing and possible ember-safe vent requirements to Residential Hillside and applicable WUI Fire Area contexts.
Roof edges, starter courses, drip edge, roof-to-wall flashing, skylight curbs, valleys, gutters, penetrations, and low-slope terminations deserve extra attention because Gilroy's criteria include Exposure C wind and 1.5 inches/hour rainfall intensity.
A useful inspection checks roof covering condition, deck or sheathing risk, flashings, penetrations, valleys, skylights, roof edges, gutter-line behavior, attic ventilation, pest screening, WUI/RH vent needs where applicable, and whether the scope crosses permit thresholds.
Treat them as roof-edge water-control details. Check fascia staining, outlet sizing, valley discharge, inside-corner overflow, gutter backflow under shingles, and whether downspouts or discharge paths send water toward vulnerable areas.
Winter Roofing can inspect the roof, separate repair from reroof scope, review drainage, skylight, commercial, WUI/RH, and roof-weight issues, and help plan work around Gilroy's permit and inspection path.