Airtight Construction, Inc. is a high-quality general contractor with extensive roofing, concrete, and siding expertise. We provide an array of services, including commercial roofing, concrete and deck sealing, siding and stucco repair and installation, waterproofing, and emergency repair services. We have worked for decades with owners and managers of occupied commercial buildings, industrial manufacturing plants, and residential dwellings. Headquartered in Concord, California, our fully equipped and professionally staffed organization can meet any construction, renovation, or retrofit need. We can serve as a single point of contact for the most complex and time constrained projects.

We are committed to a responsive delivery of flawless craftsmanship, alongside the industry’s best customer service. We bring proven expertise and time-tested techniques to every job. While most companies rely on subcontractors for major parts of their work, we do everything in house. This allows us to maintain control over quality and scheduling of the work performed. Our cleanup crews work daily to keep the job-site clean, safe, and usable at all times.


Airtight Construction, Inc. is a full-service construction company of caring professionals and craftsmen. We are renowned for our innovation, reliability, and unmatched craftsmanship. We always make the extra effort to exceed our clients’ expectations. We take pride in our work and always uphold our ethical standards. We are solemnly committed to being the best we can be.

Our Team

Dennis Jones
Dennis JonesOwner
Years with ATC: 40
Specialties: carpentry, roofing, waterproofing and troubleshooting leaks in roofing and siding.
Ken Cheda
Ken ChedaV.P. of Sales & Project Manager
Years with ATC: 10
Specialties: commercial, multi-family and HOA projects
Bob Jones
Bob JonesCMO
Years with ATC, Inc. 32
Specialties: Commercial, Industrial, Multifamily residential properties i.e. HOA’s and Apartment buildings. Bob is a past board member of the Western Roofing Contractors Association and the Contra Costa Builders Exchange.
Marceline Cortez
Marceline Cortez Superintendent
Years with ATC: 11
Specialties: concrete, asphalt, drainage, ADA, heavy equipment operation, roofing, waterproofing
Michael Walling
Michael Walling Superintendent
Years with ATC: 29
Specialties: electrical, carpentry, heavy equipment operation, metal, welding, safety, roofing, waterproofing
Robert Cooper
Robert Cooper Foreman
Years with ATC: 7
Specialties: carpentry, painting, heavy equipment operation, scaffolding set-up, safety, roofing, waterproofing
Jose Cortez Lopez
Jose Cortez Lopez
Years with ATC: 7
Specialties: scaffolding set-up, heavy equipment operation, roofing, waterproofing, concrete, asphalt, ADA
Greg Sailor
Greg Sailor Superintendent
Years with ATC: 30
Specialties: structural, carpentry, roofing, waterproofing, sheet metal, concrete, stucco, heavy equipment operation, scaffolding set-up
Jesus Ortega
Jesus OrtegaForeman
Years with ATC: 5
Specialties: carpentry, concrete, roofing, waterproofing, heavy equipment operation
Wesley Cullumber
Wesley CullumberCivil Engineer
Years with ATC: 1
Specialties:Specializing in the structural design of transportation, residential and commercial structures, Wesley has been involved with the rehabilitation of bridges, including work on the historic Golden Gate Bridge.

Whether you need concrete repairs to substructures and superstructures, deck replacement and overlay, bridge widening, bridge jacking and bearing replacement, or pier and girder strengthening, Wesley is our expert engineer. Over the years Wesley has built strong relationships with homeowners, contractors, building officials, and state and local governments.