
Double hung
Both sashes move, and they tilt in so you can clean the outside glass from inside.
- ProVia window systems
- Expanding foam and sealants, integrated into the wall
- Screens and tilts you will actually use
ProVia replacement windows. Double-hung, casement, bay, bow, sliders, and awning, measured at the house. This page covers Gainesville, plus Bristow and Haymarket: 5 ZIP codes in Prince William County.

The style is chosen for how the opening should move. We confirm it at the in-home measure.

Both sashes move, and they tilt in so you can clean the outside glass from inside.

Cranks open up to 90 degrees for ventilation, then closes tight against the frame.

Bay, bow, and special-shaped combinations. Framing holds the projection. Flashing keeps it dry.

Horizontal sliders, awning, and single hung when the wall wants a different motion.
You can feel air moving near the frame, or the room by the window never warms up.
Condensation trapped inside the glass means the seal between the panes has failed.
Windows that stick, will not stay up, or will not lock.
Heating and cooling working harder every season often points to the openings.

ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Gainesville, Virginia under VA 2705182673. Maryland, Virginia, West Virginia, and Pennsylvania are authorized service areas. The business address is 6301 Ivy Ln, Suite 120, Greenbelt, MD 20770.
The ZIP codes below are the zone list that names Gainesville, along with Bristow and Haymarket. They are not a city-limit map of Gainesville alone.
Photos on this page are examples of ExteriorMax work and the products we install. They are not a job at a specific address.
Gainesville, Bristow, Haymarket. Prince William County. Zone VA-PWC-GAINESVILLE. ZIP codes: 20136, 20155, 20156, 20168, 20169.
From 2025-11-11 through 2026-11-11, National Weather Service severe reports for Prince William County include this headline: 1.00" hail recorded in Prince William County. That is a county record. It does not mean every home in these ZIP codes experienced that weather. A county hail report is not a window inspection. Fog, drafts, and sashes that stick are what we look at on the opening.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule. Financing details.
These are company-wide reviews. They are not filed as Gainesville reviews, and we do not invent a local set.
One word: AWESOME. Roof replacement and all the windows. Chidi and Adam were professional. The installers were thorough.
Yes. This page covers Gainesville, plus Bristow and Haymarket: 5 ZIP codes in Prince William County under VA 2705182673.
Double hung, Casement, Bay and bow, Sliders and awning. The style is chosen for how the opening should move. We confirm it at the in-home measure.
Measured in person, Old unit out, opening checked, Foamed, flashed, and sealed, Trim and walkthrough.
Permit rules differ by county. ExteriorMax handles the permit and HOA packet for the job. We do not publish a separate permit fee for Gainesville.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule.
Also in Gainesville: Roofing in Gainesville · Siding in Gainesville · Gutters in Gainesville · Doors in Gainesville · Decks in Gainesville.
Company-wide windows page · Signs a window needs replacement · Gainesville overview
Bristow windows · Haymarket windows · Catharpin windows · Dale City windows · Dumfries windows · Lake Ridge windows · Nokesville windows · Occoquan windows
Gainesville, plus Bristow and Haymarket. ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Gainesville, Virginia under VA 2705182673. Maryland, Virginia, West Virginia, and Pennsylvania are authorized service areas. The business address is 6301 Ivy Ln, Suite 120, Greenbelt, MD 20770.