Our History

Modern Damp Proofing, Inc. – DBA – Cedar Mountain Waterproofing has been around for over 60 years now and is still going strong. We started as a company doing solely Damp Proofing in 1960 with Larry R. as the president of the company. The company later passed to Cecil Douglas who ran the company for a few years and then sold the company to his Brother McKay Douglas. The company was then passed down and is owned and operated today by: Chris, Tyler, Sam, and Jenn.


What's In A Name

Over the years as a company we transitioned from focusing on Damp Proofing to Waterproofing. This change in focus is evident in our Company Name. Originally we were known as Modern Damp Proofing. It made sense that we should make our name match our vision. In 1996 we registered the name Rocky Mountain Waterproofing. We recently added to our family of brands the names Utah Waterproofing, and Cedar Mountain Waterproofing when we added our location in St George, UT. We now only apply Waterproofing in place of Damp Proofing. We have worked hard to advance construction here in Utah by educating people about the importance of Waterproofing.


A Family Business

Rocky Mountain Waterproofing is a Family Business that has grown over the years. McKay passed the role of President to Justin his son who was instrumental in helping Rocky Mountain to grow, expand, and utilize Technology to help us be more efficient. Justin passed the torch to his siblings to focus on his vision of helping other business through leadership training and consulting.

Our Mission and Values

We are grateful for the hard work and dedication of so many that have helped us to get to where we are today. We have had and continue to have wonderful employees that work hard and do things the Cedar Mountain Waterproofing way of “Doing It Right The First Time”.


Cedar Mountain Waterproofing Divisions

We have three main divisions that have grown over the years. Below Grade Waterproofing, Specialty/Horizontal Waterproofing, and Technical Waterproofing (Foundation Leak Repair). We work on many projects from simple additions to massive mansions to complex commercial and government projects. We have performed many complex waterproofing applications and would love to assist on your next project. Please contact us today!



Christopher Douglas

Tyler Douglas

Sam Douglas