Entry doors, sliding patio doors, hinged patio doors, and storm doors, fitted to the opening. This page covers Mechanicsville, plus Leonardtown and Charlotte Hall: 11 ZIP codes in St. Mary's County.
The slab, glass, and hardware are specced to the elevation at the estimate.
Composite slabs and glass options, with hardware and sidelights specced to the elevation.
Wide glass that stays out of the room, on a track that does not grind.
French and single-leaf doors, in-swing or out-swing.
The extra layer that lets you open the entry without inviting the weather in.
Light or air at the edges means the weatherstrip and frame no longer seal.
Doors that rub, stick, or need a shoulder to close.
Condensation between the panes of a door lite or sidelight.
Locks that do not line up, or latches that will not catch.
ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Mechanicsville, Maryland under MD 142964. 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 Mechanicsville, along with Leonardtown and Charlotte Hall. They are not a city-limit map of Mechanicsville alone.
Photos on this page are examples of ExteriorMax work and the products we install. They are not a job at a specific address.
Leonardtown, Mechanicsville, Charlotte Hall. St. Mary's County. Zone MD-STMARYS-NORTH. ZIP codes: 20606, 20609, 20618, 20620, 20621, 20622, 20624, 20650, 20656, 20659, 20660.
From 2025-11-11 through 2026-11-11, National Weather Service severe reports for St. Mary's County include this headline: 59 mph winds recorded in St. Marys County. That is a county record. It does not mean every home in these ZIP codes experienced that weather. Wind-driven rain is why every door install is pan-flashed. We check the opening, not the county headline.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule. Financing details.
Yes. This page covers Mechanicsville, plus Leonardtown and Charlotte Hall: 11 ZIP codes in St. Mary's County under MD 142964.
Entry doors, Sliding patio, Hinged patio, Storm doors. The slab, glass, and hardware are specced to the elevation at the estimate.
Specced to the house, Old unit out, opening checked, Pan-flashed, foamed, and sealed, Adjusted and walked through.
Permit rules differ by county. ExteriorMax handles the permit and HOA packet for the job. We do not publish a separate permit fee for Mechanicsville.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule.
Also in Mechanicsville: Roofing in Mechanicsville · Siding in Mechanicsville · Windows in Mechanicsville · Gutters in Mechanicsville · Decks in Mechanicsville.
Company-wide doors page · Entry, patio, and storm doors · Mechanicsville overview
Charlotte Hall doors · Leonardtown doors · California doors · Great Mills doors · Lexington Park doors
Mechanicsville, plus Leonardtown and Charlotte Hall. ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Mechanicsville, Maryland under MD 142964. Maryland, Virginia, West Virginia, and Pennsylvania are authorized service areas. The business address is 6301 Ivy Ln, Suite 120, Greenbelt, MD 20770.