Composite and wood decks with railings, laid out to the doors and the grade, framed to code. This page covers Catonsville, plus Arbutus and Halethorpe: 4 ZIP codes in Baltimore County.
The layout is matched to the doors and the yard. Material is chosen at the estimate.
Sized to the house and laid out for how you actually use the yard.
Boards that hold color and skip the yearly stain.
Pressure-treated wood when the house wants real boards.
Stairs, rails, and code-right infill that finish the elevation.
Boards that flex, crack, or stay dark and damp.
Posts and rails that move when you lean on them.
Nails backing out and fasteners bleeding rust.
Gaps where the deck meets the house, or stairs that shift.
ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Catonsville, 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 Catonsville, along with Arbutus and Halethorpe. They are not a city-limit map of Catonsville alone.
Photos on this page are examples of ExteriorMax work and the products we install. They are not a job at a specific address.
Catonsville, Arbutus, Halethorpe. Baltimore County. Zone MD-BACO-SOUTH. ZIP codes: 21139, 21227, 21228, 21250.
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. Hail is not how we decide a deck is done. We look at the boards, the rails, and the ledger.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule. Financing details.
Yes. This page covers Catonsville, plus Arbutus and Halethorpe: 4 ZIP codes in Baltimore County under MD 142964.
Signature decks, Composite, Wood, Railings. The layout is matched to the doors and the yard. Material is chosen at the estimate.
Laid out with you, Footings and ledger, Boards and fasteners, Rails, stairs, 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 We do not publish a separate permit fee for Catonsville.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule.
Also in Catonsville: Roofing in Catonsville · Siding in Catonsville · Windows in Catonsville · Gutters in Catonsville · Doors in Catonsville.
Company-wide decks page · Composite and wood decks · Catonsville overview
Arbutus decks · Halethorpe decks · Dundalk decks · Essex decks · Hunt Valley decks · Lutherville decks · Middle River decks · Owings Mills decks
Catonsville, plus Arbutus and Halethorpe. ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Catonsville, 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.