Mark Beamish Waterproofing credits people and relationships as the key to its success
In an industry that often trades in transactions, Mark Beamish Waterproofing (MBW) has built its reputation on something much deeper: relationships. Founded in 1981 by Mark Beamish working out of his Anaheim garage, the company started with a commitment to hard work, craftsmanship, and providing a better life for his young family. He began by installing caulking and elastomeric membrane systems for concrete tilt-up buildings across Southern California, and over time, the work spoke for itself. Today, MBW serves some of the top contractors across the Western US, with more than 150 team members and a culture rooted in care, discipline and high expectations.
Adam Beamish, Mark’s son and the company’s President and CEO, leads the company today with a clear mission: to honor the legacy while building for the future. “We don’t just want to deliver great work; we want to deliver great experiences. That starts with how we treat each other.”
Adam took the reins after an early career path in corporate America, but a pivotal conversation with his father over coffee convinced him to return to the company and lean fully into construction. “I fell in love with the people in the trades. It was blue collar, yes, but there was a certain grit, humor, and authenticity I didn’t find anywhere else.”
Under Adam’s leadership, MBW has doubled down on investing in people and process. One standout example is the internal leadership development program called Trailblazers. It guides small groups of employees through a 12-session journey rooted in self-awareness, servant leadership, and emotional intelligence. The program blends biblical principles with modern leadership psychology and is grounded in the belief that transformation starts from within. “The core belief is simple: our clients will never be treated better than we treat each other. We ask our team to reflect on their mind, body, soul, and spirit, and then we build out from there.”
Trailblazers also leans into metaphors that resonate with the team, like a hockey-style playbook that mirrors life and leadership: win the faceoff, defend well, and then play the puck to the path to breakthrough opportunities.
MBW has also taken bold steps in innovation, particularly with SubSmart, a software solution built from the ground up to serve subcontractors. Originally designed for internal use to streamline operations, SubSmart now serves other trades as well. The software bridges sales, estimating, field ops, and billing, eliminating the spreadsheet-to-whiteboard chaos so many subcontractors face. “SubSmart is the nervous system of our business,” Adam shares. “It tracks every bid, every follow-up, every stage of the client experience. We’ve built APIs to plug into accounting systems like QuickBooks and Sage, but what really sets us apart is how human centered it is. We built it by subs, for subs.”
Recently, the platform expanded beyond California, onboarding a new client with 150 users. “What excites me isn’t just the growth,” Adam says, “but knowing we’re helping elevate other subcontractors to run like real businesses, not just job-to-job shops.”
Purpose, integrity, and humanity 
On the ground, MBW’s project work continues to push boundaries. The company recently landed a $3 million+ contract on a new arena at Pepperdine University, a full-circle moment for Adam, who met his wife there and graduated from the school. Nicknamed ‘The Mountain’, the arena is carved into the hillside of the Malibu campus and presents a host of technical waterproofing challenges. “It’s an engineering feat, but it’s also a passion project. Being involved in a legacy build on my old campus means a lot.”
MBW credits its enduring reputation not only to performance but also to the trust it earns on every job. One story that stands out: a client waited nearly a year to award a contract until MBW’s lead estimator recovered from a personal injury. “We stayed engaged, but they didn’t have to wait for us. That kind of loyalty is rare. It says something about the relationships we build and the integrity we try to walk out.”
These values show up in the day-to-day as well. Adam personally meets every new hire. “I share where we came from, what we stand for, and what it takes to grow here. We teach technical skills, of course. But we also teach mindset. Our goal is to help people grow their head and their heart. If we can do that, everything else follows.”
As a company that still believes in showing up, working hard, and doing what you said you would, MBW isn’t chasing trends – it’s refining what works. The leadership team keeps the organization nimble while staying rooted in timeless values. That includes a focus on jobsite safety, long-term client relationships, and building careers, not just crews.
Looking ahead, Adam is clear-eyed. “This next season is about going back to the basics: being thoughtful, being courteous, and delivering on what we say we’ll do.”
In an industry driven by schedules and specs, MBW is proving that leading with purpose, integrity and humanity is not only possible, but also powerful.