Serving all of Florida!

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Our experienced professionals are always here to assist you with all of your aggregate processing requirements.



Meet our team

For over 30 years, our team has been involved in the aggregate processing industry.  


Their solid background brings knowledge and reliability to KastRock Services LLC.


You will be able to put your trust in KastRock Services LLC and the ability we have to professionally meet all of your needs.

Joe Kastner

Joe Kastner started his career at HF Mason Equipment in 1983 in the service department.


After a few acquisitions from different companies, Joe ended up in the crushing and screening division, and has 27 years of experience with aggregate processing machinery applications, service and sales. Joe has extensive experience with phosphate rock processing, hydraulic sand classification, recycle of asphalt and concrete, crushing, conveying, and screening equipment.


Joe believes in the highest level of customer service. Honesty, integrity and dignity is his template for success.


Joe and his daughter Jessica started KastRock Services LLC in January 2014. Joe is married and has been with his wife Grisel for over 34 years. They have one daughter and two wonderful grandchildren.

Jessica Kastner

Jessica Kastner is Joe’s daughter. Jessica started KastRock Services LLC with Joe in January 2014 from the ground up.


Jessica is the Vice President, and is the director for accounts payable, receivable, payroll, and all functions of the company relating to continuous improvement, and quality control.


She is learning the business and is extremely dedicated to assisting our customers, and passionate to excel.


She will be receiving more exposure to the quarry process as the company grows, and is ambitious and excited to learn more.



Adam Campbell

Adam Campbell brings an exciting diversification to KastRock Services as “Product Sales Support”. He has experience with a few different aspects working in the phosphate, sand, and rock mines in Florida. Adam is well respected in our industry.


He is anxious to learn our industry and has an exceptional work ethic. Our manufacturers have graciously provided Adam with hands on training at their facilities.


Adam is passionate with helping customers solve issues and covers all of Florida. He inspects our customer’s equipment while he is at their plant, and provides OEM inspections and service to bring equipment back up to maximum efficiencies and low cost per ton.


Adam has great character and integrity, which has earned him this position with KastRock Services.


We look forward to Adam’s long future with KastRock Services. He is an extremely important, and key addition to our company moving forward.


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Brittney Hulett


Grisel Kastner

Grisel Kastner is Jessica’s mother, and Joe’s wife. She is KastRock Services Executive Administrative Assistant.


She is responsible for accounts payable, insurance, special projects, customer service, and assists in the financials and account receivables.


Grisel is dedicated to keeping the inner office operations streamlined, and is an extremely positive part of our company’s integrity and dignified operation.


Brittney is the newest member of the KastRock family.


Brittney is our Inside Sales Professional, and is responsible for inside sales, customer service, invoicing, formatting of advertisement, and works closely with all aspects of our different departments.


Brittney does a great job, and is a pleasure to work with. She is passionate to assure our customers receive the highest level of service.


We are excited, and look forward to her growth with the company.

Joe Kastner