Commercial Roof Installation in Los Angeles, CA

We handle commercial roofing on new construction projects. Your design team specifies the roof system, and we price and install the roofing work the plans show. We ask for the current plan set and one main contact who can answer roof questions and confirm changes.

New roofs are one part of the commercial roofing we do in Los Angeles. If an existing roof has a leak or damage, commercial roof repair is the better fit.

Your roof installation estimate depends on the current plan revision, roof areas and the assembly the plans specify. Site access, openings through the roof and which trade handles each roof item also shape the price. Projects reach us at different stages and with different documents.

Here is what each detail covers:

• Plan revision: tell us which set is current, since roof details can change between revisions.
• Roof areas: the size of each roof section and any changes in roof height.
• Assembly specification: the layers, products and details the plans call for.
• Access: how crews and materials can reach the roof, plus any limits on the site.
• Penetrations: every pipe, vent, drain and equipment curb that passes through the roof.
• Responsibilities: which trade supplies and installs each item that meets the roof.

Some projects have only part of this information at first. Share what you have, and tell us which details are still open. Any written estimate should show what it includes and what it leaves out.

The free estimate prices the roofing work itself. A detailed written roof report falls under commercial roof inspection and is a separate, paid service. Its fee depends on the roof's size and how many stories the building has.

Call (424) 842-2249 for a free estimate on your roof scope, or send the project details through the form.

Roof slope narrows the choice, and your project plans set the final system. On low-slope roofs, we install TPO or modified bitumen membrane systems. On sloped roof areas, we install standing seam metal, asphalt shingle and tile systems when the plans call for them.

The roof covering is only the top layer you see. The full assembly includes every layer beneath it, plus the details at edges and openings. Your plans should describe that whole assembly, not just the covering.

Here is how TPO and modified bitumen compare:

• TPO: a single-ply membrane, meaning one layer of sheet roofing. We weld its seams together with heat. Its details at edges, walls and openings matter as much as the sheet.
• Modified bitumen: an asphalt-based sheet system, and our preferred choice when the project allows it. For the top layer, we favor Polyglass Polyfresko G, a reflective, granulated cap sheet. That cap sheet works as part of a compatible modified bitumen system.

If your plans call for TPO, we price TPO. If the design team is open to options, we can also price a modified bitumen system for its review. You can read more about both systems under flat and low-slope roofing.

A product name alone does not show that a system meets your project's requirements. The design team and the reviewing agency make that decision. Exact installation details come from the current manufacturer instructions and the approved plans.

Sloped roof areas also rely on the layers under the covering. A shingle roof depends on underlayment, the water-resistant layer beneath the shingles.

Plumbers, electricians and mechanical crews often need openings or supports in a new roof. Each opening needs a roof detail that works with the roof system. Settle these questions with the project team before any roofing work starts:

• Who confirms the final count and location of pipes, vents and drains?
• Who supplies the curbs and supports for rooftop equipment, and who sets them?
• Who approves a change after the plans are final?
• How will approved changes reach us in writing?
• What order will the trades follow at the roof?

An opening added late can mean cutting into finished roofing and redoing its details. Early answers help you avoid that and keep the roof work tied to the plans.

We can help you pull a required roofing permit from the city or agency in charge. That city or agency reviews the application and inspects the work, so we cannot promise approval or a finish date. Some projects require roof submittals, the documents and samples the project calls for, such as drawings or product data.

Confirm early who files each permit that covers the roof. Ask which submittals your project needs and who prepares them.

The city or agency in charge also sets the inspection timing and decides the result.

Before you sign a roof proposal, check it against the current plan set. A complete proposal should name each of these points:

• The plan revision and date it prices from.
• The full assembly, layer by layer, not only the top covering.
• Flashing and other details at edges, walls, drains and openings.
• Items it leaves out, such as work another trade will do.
• Written promises, such as warranty terms, and what each one covers.

Our owner worksheet for commercial roof proposals helps you flag missing scope and outdated plan references. If our proposal leaves a question open, call us before you sign.