- 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.”
Old, inefficient windows cost you money every month in lost heating and cooling, and they can make rooms uncomfortable no matter how well your HVAC system performs. JACK Contracting installs replacement windows that improve energy efficiency, enhance curb appeal, and make your home quieter, more comfortable, and easier to maintain. We work with homeowners on single-window replacements and whole-home projects with the same level of attention and craftsmanship either way.
The right window depends on the style of your home, the orientation of the opening, your performance goals, and your budget. We walk you through material options, glass packages, and frame styles so you can make an informed decision without feeling pressured. Every window we install is measured precisely, ordered to fit your existing openings, and installed with proper flashing and sealing to keep water and air where they belong.
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 The quality of the window product matters, but the quality of the installation matters just as much. A premium window installed poorly will still leak air and water, develop condensation between panes, and fail ahead of schedule. JACK Contracting installs windows to manufacturer specifications with proper flashing, shimming, and sealing at every opening so the performance you are paying for is performance you actually receive.
We install double-hung, casement, picture, bay, and sliding windows in vinyl, fiberglass, and composite frame materials. Double-pane and triple-pane glass options with low-e coatings and argon gas fills provide meaningful improvements in thermal performance and UV protection. Our team will help you identify the right combination of features for each opening based on your home’s energy needs, existing trim profiles, and aesthetic goals.
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.
Window replacement projects can be completed efficiently with minimal disruption to your daily routine when they are managed properly. JACK Contracting schedules work in a way that respects your time, protects your interior surfaces, and keeps each opening exposed for as little time as possible during the installation process. We take care with interior trim, cover floors during the work, and clean up completely at the end of each day.
Most window replacements, even larger multi-window projects, can be completed in a single day. Our crew handles the removal of the existing windows, proper disposal, flashing installation, window setting, and interior and exterior trim finishing so you have a complete, finished result when we leave. If you have any questions during or after the installation, our team is available and responsive.
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.
