Lic #1007864 · Alameda County · Envelope
Roofing Systems & Waterproofing
Composition, tile, and flat roofing systems with forensic leak diagnostics and full waterproofing.
The Tri-Valley's premier suburb — upscale residential remodels, corporate office improvements, and retail maintenance programs.
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 Pleasanton and across Alameda 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.
Pleasanton's neighborhoods — from Vintage Hills to Ruby Hill — come with HOAs and design guidelines we satisfy before demo day. Vineyard-corridor estates, family-kitchen remodels, and retail work along Stoneridge and downtown Main Street all run through the city's permit center, which we manage end to end.
What's included in Pleasanton
Recent roofing work
The process in Pleasanton
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 Pleasanton — 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 · Pleasanton