Experienced, Long-Term Employees +
Best in Class Technology +
Work Process Driven =
Customer Success
Our History
1982
Mainland Custom Marble, Inc. started in 1982 by Johnny Helpenstill and Darwin Miller as a small, cultured marble operation with three employees and a few pieces of equipment.
2000
A new 20,000 SF production facility was built in Alvin, TX and Mainland quickly grew to become a leading producer in Houston.
2006
The company was acquired by Kevin & Kristi Bertelsman and diversified our product mix by adding natural stone and solid surface.
2010
We acquired Countertops Unlimited with Kenny Pierce to grow the stone fabrication business and work in commercial arena.
2013
The cultured marble operation was shut down to focus on natural stone and quartz countertops, and the company name was changed to Mainland Stoneworks.
2016
Mainland opened at 45,000 square foot state of the art solid surface and stone fabrication facility in Winston Salem, NC to serve commercial customers. The Winston Salem facility was sold in 2020.
2024
We partnered with Travis Yarbrough of Stainless Innovations in Fort Smith, Arkansas to build a fabrication facility to focus on Texas, Arkansas, Louisiana and Oklahoma.