About Us

Three Decades of excellence
tried and true

Founded in 1993 by Kal Zam, DSM was born from his desire to make a meaningful impact on California’s construction landscape. Inspired by his father, Kal infused DSM Construction with a family-oriented spirit that has driven the company to excellence over its 30-year history. This spirit of respect extends to DSM’s 50+ employees and an ever-growing list of clients, treating each like family. At DSM, respect begins with industry-leading safety protocols and ends with quality work that speaks for itself. For projects such as Stadiums, Hospitals, High Rise Buildings, and Commercial Complexes, DSM delivers on its promise to maintain the highest safety standards while providing efficient, expert waterproofing and joint sealant solutions.

The largest contractors choose DSM for their most important projects, making first-time clients into long-term partners. This commitment to excellence earned DSM Construction the 2022 QAP Installation Excellence Award from the Air Barrier Association of America.

As a veteran-owned company, DSM now enters its fourth decade, eager to explore new roles and opportunities. With unmatched expertise in waterproofing and joint sealant solutions, DSM is ready to bring its proven skills to new markets.

Veteran Owned

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Distinctives

Thirty years of satisfied clients

At DSM, most of our business is repeat business, and we’re proud of that fact.

Expertise
in action

With hundreds of years of combined experience, our team can assess and address your waterproofing and joint sealant needs faster and better than anyone else in the industry.

Customer service
that cares

When we say that we respect our clients like family, we mean it. Your concerns are our concerns. Your needs are our needs. And your time is a resource we refuse to waste.

Careers

DSM is always looking for motivated individuals to join our team. Whether you are experienced in the construction industry or are looking for an exciting new career as an apprentice or intern, we encourage you to submit your resume and tell us why you are interested in being part of DSM. 

We are a family-owned and veteran-owned business, and we believe in promoting from within. There are many excellent opportunities for career growth within the company. We provide exceptional training and support to help you succeed in this competitive industry.

Test Job Posting

Test Job Posting

Test Job Posting

Give us a call and find out how our team can simplify your waterproofing and joint sealant needs.