Lic #1007864 · Santa Clara County · Envelope
Roofing Systems & Waterproofing
Composition, tile, and flat roofing systems with forensic leak diagnostics and full waterproofing.
Historic downtown Victorians and hillside modern estates — remodels and additions that honor character while adding serious square footage.
JMG installs and repairs roofing systems built for California microclimates — from wind-rated composition shingles in the East Bay to clay tile estates in Saratoga and cool-roof flat systems on commercial corridors.
In Los Gatos and across Santa Clara County, JMG delivers roofing under California Contractor's License #1007864 — permitted, inspected, and personally overseen by owner Jerry Guinn. Our leak-detection protocols trace water intrusion to its source before we ever lift a shingle, saving owners from repeat repairs and interior damage.
Los Gatos blends a historic downtown commercial district with hillside neighborhoods like Belgatos and Alta Vista — each with its own review path. Historic-district storefront work follows the town's preservation guidelines; hillside homes need grading and erosion-control plans. JMG runs both under one contract and one schedule.
What's included in Los Gatos
Recent roofing work
The process in Los Gatos
Private Consultation
Walk the property with owner Jerry Guinn. Honest scope, realistic timeline, and a written line-item estimate — free.
Design & 3D Rendering
See the finished project in photorealistic 3D before a single wall comes down. Finishes get locked before demo day.
Permits, Handled
Plans, submittals, corrections, and city or county coordination under CA License #1007864. You sign — we run the process.
Build & Final Inspection
Sixteen in-house trades on one schedule, one accountable owner. Inspection passed, walkthrough done, keys in hand.
Roofing in Los Gatos — FAQ
Most composition-shingle re-roofs run three to five working days; tile and flat systems run longer. We tear off only what we can dry-in the same day — your home is never left open overnight.
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Roofing · Los Gatos