- Mon-Fri 7:00 AM - 5:00 PM
- (571) 305-2252
”Jack was great to work with for our roof replacement. Roof looks great and they cleaned up everything. Barely knew they were there. Thanks for taking good care of us.”
”Anybody looking for a solid, ethical company to replace your homes roof, contact JACKs!
No, I’m in no way affiliated with the company, just a customer that is truthful on my experience with Jason and Erin – JACK Contracting.
Straight and upfront approach, zero gimmicks. I can’t applaud the company enough. Attention to detail and employee attitude is stellar.
If you”re looking for a quality small company, these are your people.
Reach out to me if you need validation.”
JACK Contracting is a full-service residential contractor serving Gainesville and the surrounding Prince William County area, including Haymarket, Bristow, Manassas, and communities throughout Northern Virginia. We work with homeowners on everything from roofing, gutters, siding, and windows to interior projects including kitchens, bathrooms, basements, and decks. Whether you need a roof inspection after a storm, want to replace aging gutters, or are planning a full kitchen remodel, JACK Contracting is the local home improvement contractor Gainesville homeowners call.
Gainesville is one of the fastest-growing communities in Prince William County, with a mix of upscale planned developments, established neighborhoods, and newer residential construction along Linton Hall Road and Routes 29 and 15. The range of homes here means JACK Contracting works on everything from newer builds to properties approaching the age where major systems need attention. We bring honest assessments and quality workmanship to every project we take on in Gainesville.
If you are looking for a reliable residential contractor in Gainesville, reach out to schedule a free estimate.
Homeowners in Gainesville trust JACK Contracting because we handle the full scope of home improvement work under one roof. From a roof replacement or storm damage repair to new windows, a bathroom renovation, or a finished basement, we bring the same professional standards to every project. You do not have to manage multiple contractors or wonder whether different companies will coordinate properly.
We show up when we say we will, explain the work clearly before it starts, provide written estimates with no hidden costs, and leave every job site clean when we are done. Our reputation in Gainesville and throughout Prince William County is built on consistency and the kind of honest service that homeowners remember and refer to their neighbors.
Reach out to JACK Contracting and we will be glad to help with your Gainesville home project.
Durable roofing systems installed with precision and care.
Seamless gutter solutions designed to protect your home.
Premium siding that enhances curb appeal and weather protection.
Energy-efficient windows for comfort, clarity, and efficiency.
Thoughtfully designed kitchens built for everyday living.
Clean, modern bathrooms finished with expert craftsmanship.
Rapid Response Time 
Locally Owned & Operated 
Superior Craftsmanship Every project is completed with careful attention to detail, high-quality materials, and workmanship designed to protect your home for years to come.
Personal Touch We believe homeowners deserve clear communication and honest guidance, so you always understand the process and feel confident in the work being done.
Financing & Claims Assistance Quick conversation to understand your needs, answer questions, and schedule an on-site visit.
We inspect your home, assess the scope of work, and explain your options clearly and honestly.
Our crew arrives on schedule and begins work using proven systems, quality materials, and clean jobsite practices.
We finish with a full walkthrough, answer any remaining questions, and ensure you’re happy before we leave.
Client-focused professional with a nursing and community outreach background, now bringing a relationship-driven approach to residential construction. As Client Experience Manager at JACK Contracting, Erin guides homeowners through roofing, remodeling, and renovation projects with clarity, transparency, and care. Committed to delivering high-quality service while building trust and long-term relationships.
Stacy is a Client Solutions Manager at JACK Contracting, working directly with homeowners on roofing, windows, doors, and remodeling projects. As part of the JACK team, she helps homeowners understand their options, pricing, and product selections so they can make confident, informed decisions.
She assists with both product and design choices by coordinating design consultations with Mosaic Home Interiors, reviewing roofing system options, and explaining how different components work together. Whether it’s walking through Owens Corning roofing systems or guiding window and door selections with ProVia, Stacy focuses on clarity, organization, and eliminating surprises throughout the process.
Her role is to simplify complex decisions, coordinate the right next steps, and make sure homeowners feel comfortable and supported from the first conversation forward. Her work reflects JACK Contracting’s core values of Authenticity, Transparency, and Quality.
Jason Kamprowski is the founder and CEO of JACK Contracting LLC, a Class A licensed Residential Builder Contractor (RBC) company based in Northern Virginia.
With over 30 years of experience in the construction industry, Jason is an expert in all aspects of residential construction, renovation, remodeling, and roofing.
Before starting JACK Contracting, Jason served as a Geospatial Engineer in the US Army, completing two tours in Iraq and one in Afghanistan as a civilian. He later worked in defense contracting and as a federal civilian in geospatial analysis and product management for SaFE Agile software development, specializing in data capture, analytics, and AI/ML-driven solutions.
Jason’s unique blend of military, construction, and software product management experience has helped him incorporate innovative technology and processes into his business and scale and grow the company. Jason is also a devoted husband and father of three.
The company name JACK is an acronym for his family’s first name.
