New Construction Roofing in Northern California

ACS installs new construction roofing across Northern California, matched to your building and your climate, from Tri-Valley heat to Bay-adjacent fog.

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  • Roofing Systems We Install

    ACS installs TPO, PVC, acrylic, metal, tile, and shingle systems across commercial properties. TPO is our most common installation, but the right system depends on your substrate condition, budget, and long-term maintenance plan. We make that recommendation before anything else.

  • Pre-Construction Coordination

    Before a crew arrives, ACS holds a pre-construction meeting to coordinate staging for vehicles, materials, and debris. We align with tenants on noise and timelines, gather emergency contacts, and locate critical building systems including fire risers and water mains.

New Commercial Roof Construction and Installation

Allied Construction Services installs commercial roofing systems across the Bay Area and Northern California, handling new construction roofing on ground-up builds and full tear-off replacements on existing structures. We work primarily with property managers and building owners, and with general contractors on new builds where a specialist roofing subcontractor is needed.

New Installation vs. Restoration

If your existing roof has two systems on it already, or if the substrate has deteriorated beyond what a restoration can stabilize, new installation is the right call. We perform tear-off replacements, overlays, and lift-and-re-lay projects on tile roofs where the underlayment has failed but the original tile is still usable.

Let’s Look at Your Building Together

Allied Construction works with property managers and building owners across the Bay Area. A site walk is the first step.

Schedule a Site Walk

Why Building Owners Choose ACS for Commercial Roof Installation

Allied Construction has been installing commercial roofing systems across Northern California for over two decades. Here is what separates the way we work from a standard roofing contractor.

We Recommend the Right System, Not the Most Expensive One

If your roof qualifies for a restoration rather than a full replacement, we’ll tell you. A fluid-applied acrylic restoration on a stable substrate can carry the same manufacturer warranty as a new TPO or PVC system at a significantly lower cost.

Pre-Construction Coordination Is Standard, Not Optional

Every installation at ACS starts with a pre-construction meeting. Staging, tenant communication, emergency contacts, and building system locations are mapped before a crew arrives. Property managers who’ve run jobs with contractors that skip this step know exactly what that costs.

Every Commercial Roofing System Under One Contractor

ACS installs TPO, PVC, acrylic, metal, tile, and shingle systems and handles waterproofing in-house. If a new roof surfaces adjacent needs like exterior waterproofing or building envelope repair, we handle it under the same contract.

Talk to Our Renovation Team

If a roofing project on your building surfaces renovation or exterior envelope work, you don’t need a second contractor to deal with it. Allied Construction handles both under one relationship. Tell us what you’re working with, and we’ll get a site walk on the calendar.

Schedule a Site Walk

No Subcontracted Crews. No Handoffs. No Surprises.

From the first site walk through the final inspection, ACS manages every phase of a commercial roof installation in-house. What gets scoped before work begins is what gets delivered.

Start With a Site Walk

Allied Construction installs commercial roofing systems the right way, starting with the right recommendation for your building.

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