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Meet the Experts

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Introducing…our team!

If we had to describe our team in a word…we couldn’t do it! Grounded in years of experience, our team members work with confidence and are invested in our mission to provide high quality products and service to the community.

Whether wielding a hammer, analyzing our accounts, or working directly with you, our clients, our team is made up of passionate people! From avid fishermen, sport aficionados, to plant enthusiasts, we appreciate the unique strengths (and personalities) each brings to the table. We’re more than a team, we’re a family!

Our Office Staff

Kerwin Mast

Owner / Visionary

Kerwin Mast is the owner of Mast Roofing & Construction, Inc. He was born and raised in the Oley Valley and being the son of a farmer, he knows full well what hard work looks like. As a boy, he helped around the farm and worked for neighboring farmers. After high school, he went to Penn State and graduated with a bachelor’s degree in Electrical Engineering.  His remarkable work ethic and attention to detail make him well-suited to be a business owner. He currently works as the General Manager and Visionary of the company, leading the way for the future. He enjoys flying, playing cards, volleyball, hunting, and teaching his children about the world around them. He and his wife, Corrie, live in Berks County with their three children.

Ron Mossie

General Manager

Ron joined the Mast Roofing and Construction, Inc. team in late 2020. He grew up in Oaks and Boyertown, PA, graduating from Boyertown High School. He has a Business Management degree from Kutztown University and since then gained 15 years of management experience, including owning his own business. Here at Mast Roofing and Construction, Inc. he serves as General Manager, making sure all our clients have a fantastic experience from when the contract is signed until the final inspection. He is married to his wife Ashley and the father of four daughters. When not working, he enjoys reading, serving at his church, and running/working out.

Ashley Mossie

Office Manager

Ashley is the Office Manager here at Mast Roofing & ConstructionFrom taking care of all things HR, to reconciling financial statements, and everything in between, she makes sure the office runs smoothly. Ashley grew up in Oley and graduated from Oley HSShe holds a Business Management Degree from Kutztown University and has 14 years of banking and finance experience. When not keeping a million numbers straight here at the office, she enjoys cooking and spending time with her husband Ron and 4 daughters.

Corrie Mast

Chief Financial Officer

Corrie Mast wears many hats at Mast Roofing & Construction – when we come up with a title, we’ll let you know! She graduated from Berks Christian School, in Birdsboro, PA, where she met Kerwin at age 15. They were high school sweethearts, and after two years at Elizabethtown College, they got married and she transferred to Penn State to finish her Bachelor’s Degree in Music. Corrie has been working in the office at Mast Roofing & Construction, Inc. since Kerwin first went full time – for the first seven years as the only one in the office. More recently, with the addition of more office personnel, she has transitioned to part-time. She enjoys cooking, hiking, water skiing, target shooting, and spending time with her three children.  

Ken Frymoyer

Production Manager Assist

Ken Frymoyer serves as a Production Assistant/Shop Manager here at Mast RoofingHe manages our fleet of trucks, keeps our warehouse stocked and organized, assists with training of our crews, and assists with the details that go into productionHe grew up in the Exeter area and attended BCTC in Oley for carpentry, but moved to Florida mid-way through high school and graduated thereFrom there, he actively served in the US Army for 8 yearsHe knows the roofing business well – he as been involved in both the Sales and Production side of the business for many yearsHis hobbies are hunting, fishing, and boating and he actively serves in his local church. 

Kerri Fisher

Client Care Representative

From the first call to the completion of a job, Kerri is there to ensure that the entire process goes smoothly. She joined the Mast team as a Client Care Representative (CCR) in early 2018. She grew up in a military family – born in North Carolina, but lived all over the East Coast in her early years. She has been in the customer service/administrative field for her entire professional career and it shows!  She has a genuine concern for client needs and has an uncanny ability to connect with people over the phone. When Kerri’s not manning the phones, she enjoys camping, fishing, snowmobiling, going to the beach, and spending time with her boys. 

Kristin Keylor

Client Care Representative

Kristin supports our Team as an Administrative Assistant, which means she wears a lot of hats in the office – she answers the phone, schedules and confirms appointments with clients, does data entry, and social media management just to name a few of her tasksShe is a 2021 graduate of Berks Christian School and grew up in Reading, PA.  She loves to play volleyball and paint in her spare time, and is pursuing art & design as a passion. 

Noelle Yorgey

IT Systems Analyst

Noelle is our IT Systems Analyst! She spearheaded our big move to a new Client Management Software in mid-2019 and, once again, in 2021. Our in-house problem solver, she continues to help develop internal systems to more effectively advance our mission of providing outstanding service to our clients. She graduated from 21st Century Cyber Charter School and is currently working on getting a degree in Organizational Management and Leadership with a concentration in Aviation. In her free time, Noelle enjoys water coloring, theatre, cake decorating, and flying. 

Tyler Heist

IT Systems Integrator

Tyler can best be described as a “wonder-wizard” of all things technological! Working with automating processes to make the company run smoothly, and giving a helping hand with all of the IT equipment, as well as ensuring the customer experience is satisfactory– Tyler gives his all in making sure Mast is up to snuff!

Tyler is currently pursuing his Bachelor’s Degree in Computer Science, with a concentration in Software Engineering. His hobbies include hiking, reading, and, of course… programming! He also has a special passion for Cybersecurity Technologies!

Mason Ayres

Brand Ambassador

As our brand ambassador – Mason is in charge of everything that makes Mast feel like Mast! His role includes everything from graphic design, photography, advertising, and branding, to video editing, to being the “Hype Man” of the brand. He also takes care of the community involvement Mast participates in!

Mason has an Associate’s Degree in Fine Arts, as well as a Bachelor’s in Communication Design.  His hobbies include fishing, videography, photography & playing guitar. 


Our Field Staff

Jason Konnick

Senior Repair Technician

Jason Konnick is a very versatile member of our team – able to get things done wherever he is needed. From leading crews, running repair calls, performing quality control inspections, advising clients about replacements, and overseeing in-house training, Jason can do it all. He came to Mast Roofing & Construction in 2015 with 16 years of experience in the roofing industry.  He grew up in Perkiomenville and graduated from Boyertown Senior High School. Jason has extensive training with copper, managing roofing crews, and being an all-around team player. Jason and his wife Karen have a daughter named Hope. Jason enjoys spending time with his family, going to Phillies games, and going on shopping trips with Hope. 

Shane Petersheim

Senior Foreman

Shane Petersheim has been with us at Mast Roofing & Construction for a number of years – at first on and off between semesters at school, and then full-time in 2012 as one of our Roofing Foremen. He is responsible for making sure your roof is installed exactly how you want it, from tear-off to clean-up.  Shane graduated from Conestoga Christian School and went on to earn his Bachelor’s Degree in Accounting from Geneva College. In his free time, he likes to hunt, golf, play volleyball, and is a member of a hunting cabin in western PA. 

Kieth McCandless

Senior Repair Technician

Kieth joined the Team here at Mast Roofing and Construction, Inc. in September of 2017 as a member of our installation crew, but has since moved into a Repair Technician role. He came to us with training in the painting and masonry fields, and a desire to learn new skills as a roofer. He has proven himself to be a valuable member of the team – always willing to work hard and do what is asked of him.  More recently, Kieth has moved into the Repair Technician role, which further shows his willingness to help out wherever needed. He grew up in the Fishtown section of Philadelphia, graduating from Franklin Learning Center. He is trained in plant-based/raw meal planning and nutrition and enjoys staying active with hiking, rock-climbing, sports, and gardening. He is also an active artist, primarily in the design field and enjoys reclaiming wood and antiques. 

Chris Lucas

Senior Repair Technician

Chris joined our Team in September of 2019, already having 5 years of roofing experience. He is one of our Repair Technicians, which means he can take a look at your roof, diagnose the problem, and present you with a plan to fix it. Chris grew up in Massachusetts, so watch out for that fabulous accent if you get a chance to meet him! When he’s not coming to a homeowner’s rescue, he enjoys spending time with his family, fishing, golfing, and most all other sports. 

Erich Nettles

Roofing Specialist

Erich is our newest addition to the sales team, having over 20 years of experience in the exterior remodeling industry! He cares deeply about health & personal fitness, and is a go-getter in all regards. He takes problems head-on, and when an easy solution isn’t present, he carries through with tenacity. In his free time, Erich will often spend time with his wife and 2 sons, or can be seen pumping iron at the gym.

Tom Laub


Tom joined the Mast Roofing Team in May of 2021.  He is a vital member of our installation crew who started out as a Skilled Laborer, but quickly moved up to a Foreman position.  He works hard out in the elements every day to make sure that your family is covered with a quality roofing system!  He used to wrestle in high school and enjoys fishing in his spare time.

Extin Laub

Field Crew

Extin is a valued member of our installation crew. He works hard to make sure our clients’ homes are both protected from the elements and look beautiful as well. He grew up in Seattle, Washington and graduated from Abraxas Academy. When not making magic happen with client’s homes, Extin enjoys fishing and boxing. 

Patrick Lance

Field Crew

Patrick joined our Team in 2021 as part of our Field Crew. He grew up in Gilbertsville and graduated from Boyertown HS. While in college at Cleveland State University, he was a Division 1 swimmer and graduated with a major in Criminology and minors in both Sociology and Communications. He is a avid fan of fishing and enjoys TRYING to play golf. One more fun fact: he is the BIGGEST Browns fan in the state of PA! 

Jeremiah Harris

Field Crew

Jeremiah joined our team in January of 2020 as one of our Shop Assistants, and has quickly become an integral part of the field crew here at Mast! He has a keen eye for detail and is a very hard worker. We are glad he’s a part of our Team!  He is skilled at woodworking, fixing cars, and enjoys golfing in his spare time. 

Andrew Mack

Field Crew

Andrew Mack is one of our newest additions to the Field Crew here at Mast, and is a great ball of enthusiasm! He has prior experience in Commercial Roofing, grew up in Gilbertsville, PA and went to Boyertown Area School District. His hobbies include spending time with his family, as well as fishing in his free time. 

His primary catchphrase: “Oh yeah!”

Jadon Yorgey

Shop Assistant

Jadon is one of our Shop Assistants, which means he helps keep the warehouse and grounds in tip-top shapeHe grew up here in Oley and is currently a sophomore in high schoolIn his free time, he likes to weld and play baseball. 

Trey Wamsher

Shop Assistant

Trey is our newest Shop Assistant – currently a Junior at Oley Valley High School! he helps clean the shop and manage the grounds here, as well as help with other tasks. He is also attending tech school in order to learn the trades – plumbing specifically. In his spare time he plays lacrosse as well as football, and is passionate about weightlifting! When he’s in “rest mode” he enjoys playing video games.


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