Technical capability. Personal accountability.

We know roofing. We understand what depends on it.

A commercial roof protects more than a building. It protects the people, equipment, inventory, and daily operations beneath it. At Mammoth Services, that responsibility shapes how we plan, how we work, and how we serve our clients.

We bring 42 years of combined team experience in commercial roofing, supported by highly trained roofing mechanics and practical knowledge earned in the field. Commercial roofing is our focus. We understand roof systems, demanding specifications, and the coordination required to work around an operating facility.

Owner Trisha Lira, a third-generation roofing contractor, and her husband, Mark Lira, have built and shaped Mammoth into a firm where technical capability and personal accountability belong together. Trisha’s business leadership and Mark’s field expertise guide a team committed to knowing its trade, respecting its commitments, and taking care of the clients who trust it.

Mammoth is a boutique commercial roofing firm built for clients who value dedicated attention. For us, that means involved leadership, thoughtful planning, direct communication, and a team that takes the time to understand your facility. From evaluating roof conditions to presenting specification-driven options and a documented proposal, we help clients make informed decisions about an important asset.

Our relationships include master service agreements with major Fortune 500 companies and work with organizations across the United States. With offices in San Angelo and Houston, and operations in Puerto Rico and other Texas markets, we bring experience serving clients with complex facilities and demanding expectations.

San Angelo is home. Our office on Christoval Road serves the Concho Valley, and our team’s work here includes the Ethicon / Johnson & Johnson facility campus, San Angelo ISD facilities, and the City of San Angelo. As Mammoth grows, our commitment remains personal: bring a clear plan, deliver skilled work, and build relationships that last beyond a single project.

Mammoth Services. We bring solved.