Entry doors, sliding patio doors, hinged patio doors, and storm doors, fitted to the opening. This page covers Timonium, plus Towson, Lutherville, and Parkville: 12 ZIP codes in Baltimore 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 Timonium, 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 Timonium, along with Towson, Lutherville, and Parkville. They are not a city-limit map of Timonium alone.
Photos on this page are examples of ExteriorMax work and the products we install. They are not a job at a specific address.
Towson, Lutherville, Timonium, Parkville. Baltimore County. Zone MD-BACO-NORTH-RING. ZIP codes: 21084, 21093, 21094, 21128, 21204, 21234, 21236, 21252, 21284, 21285, 21286, 21290.
From 2025-11-11 through 2026-11-11, National Weather Service severe reports for Baltimore County include this headline: 1.75" hail recorded in Baltimore 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 door inspection. Drafts, fogged glass, and locks that miss are.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule. Financing details.
Yes. This page covers Timonium, plus Towson, Lutherville, and Parkville: 12 ZIP codes in Baltimore 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 We do not publish a separate permit fee for Timonium.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule.
Also in Timonium: Roofing in Timonium · Siding in Timonium · Windows in Timonium · Gutters in Timonium · Decks in Timonium.
Company-wide doors page · Entry, patio, and storm doors · Timonium overview
Lutherville doors · Parkville doors · Towson doors · Arbutus doors · Catonsville doors · Dundalk doors · Essex doors · Halethorpe doors
Timonium, plus Towson, Lutherville, and Parkville. ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Timonium, 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.